Category: 20117-47-9

Boontanonda, Pavares published the artcilePalladium(II)-catalyzed ring expansion of methylenecyclobutanes and related systems, Formula: C5H10O, the publication is Journal of the Chemical Society, Chemical Communications (1977), 583-4, database is CAplus.

Treatment of methylenecyclobutane (I; R = H) with PdCl₂-CuCl₂-O₂-H₂O in C₆H₆ at 0° gave 75% cyclopentanone (II; R = H). I (R = CH₂NHAc, CN) underwent analogous oxidative ring expansion at room temperature and 60° resp. on treatment with PdCl₂-CuCl₂-O₂-H₂O in EtOAc to give 65 and 82% II resp., whereas similar treatment of camphene (iso-PrOH, 65°), methylenecamphor (EtOAc, 45°) and methylenecyclopentane (EtOAc, 65°) gave only low yields of the corresponding ring expanded products. Methylenenorbornane (iso-PrOH, 45°), and β-pinene (Me₃COH, 45°) gave the corresponding bis-π-allyl palladium chloride dimers quant. on treatment with PdCl₂3-CuCl₂-O₂-H₂O whereas similar treatment of 4-RC₆H₄CPh:CH₂ (R = H, MeO) gave 28.5% Ph₂CO and 28.5% PhCH₂COPh, and 62.5% PhCOC₆H₄OMe-4, resp.

Journal of the Chemical Society, Chemical Communications published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, Formula: C5H10O.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Vinogradov, M. G. published the artcileSelective method of 5-chloro-2-pentanone preparation, Synthetic Route of 20117-47-9, the publication is Izvestiya Akademii Nauk, Seriya Khimicheskaya (1995), 774-6, database is CAplus.

5-Chloro-2-pentanone (1) was prepared by reaction of 1-methylcyclobutanol (3) with Ca(OCl)₂, followed by decomposition of the 1-methylcyclobutyl hypochlorite in the presence of a Fe^II salt. The selectivity of 1 formation from 3 was 98%, and the conversion of 3 was 35-40%.

Izvestiya Akademii Nauk, Seriya Khimicheskaya published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C14H10N2O, Synthetic Route of 20117-47-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Finkel’shtein, E. Sh. published the artcileElectrophilic addition to methylenecyclobutane and bicyclobutylidene, HPLC of Formula: 20117-47-9, the publication is Neftekhimiya (1985), 25(1), 48-57, database is CAplus.

Title reaction of methylenecyclobutane (I) with ROH (R = Me, Et, Bu, 1-methylcyclobutyl, Ph, Ac, ClCH₂CO, FCH₂CO, CCl₃CO, CF₃CO) in the presence or absence of hexane or cyclohexane and/or 80% H₂SO₄ gave the corresponding ethers and esters II. PhOH gave 4-R¹C₆H₄OH (R¹ = 1-methylcyclobutyl) and 2,4,6-R¹₃C₆H₂OH (same R¹) as the major products. Analogous reactions of bicyclobutylidene with ROH (R = H, Me, Ac, CF₃CO, Ph) gave bicyclo[3.3.0]octanes III (R² = OH, OMe, OAc, O₂CCF₃, C₆H₄OH-4, resp.). I reacted with aqueous HCHO under these conditions to give 5,7-dioxaspiro[3.5]nonane, methanolysis which gave diol IV (R = H) (V) and IV (R = Me). Dehydrating V gave 1-vinylcyclobutene . The NMR and mass spectra of the products were interpreted.

Neftekhimiya published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, HPLC of Formula: 20117-47-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Alder, Kurt published the artcileSubstituting additions. IX. Substituting addition and diene synthesis with methylenecyclobutane, Safety of 1-Methylcyclobutan-1-ol, the publication is Chemische Berichte (1952), 556-65, database is CAplus.

cf. C.A. 44, 2927i. The substituting addition of maleic anhydride (I) to methylenecyclobutane (II), which is similar to the addition of I to methylenecyclohexane and -pentane, is studied. Heating an intimate mixture of 400 g. pentaerythrityl tetrabromide and 410 g. Zn dust in 600 cc. H₂O slowly to 85° with stirring and adding over a period of 2 hrs. 300 cc. MeOH in small portions give 70-85% II, b. 41-2°. Heating 25 cc. II and 50 g. I in 50 cc. dry C₆H₆ in a bomb tube 30 hrs. at 190-5°, washing the reaction product with Me₂CO into a beaker, and allowing the solvent to evaporate cause the crystallization of 35% adduct (III), consisting of 1 mol. II and 2 mols. I, m. 170-1°, which, on standing in the open air, changes to a tetracarboxylic acid (IV), m. 165-6°. On catalytic hydrogenation of 1 g. IV in AcOEt with PtO₂, the saturated tetracarboxylic acid, m. 193°, is formed. Heating 1.5 g. III and 1.4 g. S 2.5 hrs. at 240-5°, dissolving the reaction products in Na₂CO₃, oxidizing with KMnO₄, destroying the excess KMnO₄ with NaHSO₃, washing with ether, acidifying, evaporating the filtered solution in vacuo to dryness, and extracting the residue with hot Me₂CO give a tetracarboxylic acid (V) of Va as an oil. Oxidation of V with concentrated HNO₃ on a water bath and, finally, in a bomb tube at 165° gives trimellitic acid (VI), m. 221°, which, heated above its m.p. and sublimed, gives the anhydride, m. 161°. Distilling the residue of the mother liquor of III in vacuo gives 3 g. of a fraction, b₁₃ 155-60°, which, dissolved in Na₂CO₃, filtered, acidified, and extracted with ether, gives the dicarboxylic acid (VII), of VIIa, an adduct of 1 mol. isoprene and 1 mol. I, m. 155°. When hydrogenated in AcOEt in the presence of PtO₂, VII gives 4-methylcyclohexane-1,2-dicarboxylic acid, m. 165°. Heating 1 g. VII with 0.35 g. S 2.5 hrs. at 230-5° and then heating the reaction product with concentrated HNO₃, finally 6 hrs. in a bomb tube at 160°, give VI. The formation of VII is the result of a rearrangement of II via CH₂.CH₂.CH:CMe to CH₂:CHCMe:CH₂. Heating 20 cc. II and 35 cc. freshly distilled CH₂:CHCO₂H in 40 cc. dry C₆H₆ 30 hrs. at 200° and fractionally distilling in vacuo the reaction product from 2 runs give 45% distillate (VIII), b₁₃ 120-45°. Shaking VIII with ether and dilute KOH, acidifying the alk. solution with HCl, and extracting with ether give 18 g. of an acid mixture which, redistilled, b₁₃ 130-8°. It is separated into 7.2 g. crystalline 4-methyl-Δ³-tetrahydrobenzoic acid (IX), m. 100° (anilide, prepared via its Me ester, long needles, m. 154°; hydrazide, long silky nedles, m. 151-2°), and 7.9 g. of an oily adduct (X), CH₂.CMe:CH.CH₂.CH₂.CHCO₂H. Hydrogenating IX with PtO₂ in AcOEt and treating the Me ester, prepared with CH₂N₂, with PhNH₂ give the anilide of the saturated acid, C₁₄H₁₉ON, long needles, m. 130-1°. Ozonization of 2.5 g. IX in 100 cc. AcOEt with O containing 3-4% O₃ and reduction of the reaction product with PtO₂ and a few drops MeOH give MeCOCH₂CH₂CH(CO₂H)CH₂CO₂H, hard crystals, m. 122-3° (semicarbazone, m. 178°). Heating 1 g. IX with 4 cc. concentrated H₂SO₄ 15 min. on a boiling water bath and pouring the mixture on ice give p-MeC₆H₄CO₂H, m. 178°, in good yield. Heating 1.4 g. IX 2.5 hrs. at 230-5° with 0.64 g. S, dissolving the reaction product in Na₂CO₃, treating it with KMnO₄, decolorizing with NaHSO₃, and acidifying give p-C₆H₄(CO₂H)₂ (di-Me ester, m. 140°). Heating 1.4 g. X 2.5 hrs. at 230-5° with 0.64 g. S gives m-MeC₆H₄CO₂H, m. 110°, which, oxidized with KMnO₄, gives m-C₆H₄(CO₂H)₂ (di-Me ester m. 68°). Distillation of the residue of the washed ether solution obtained in the working up of VIII gives 10 g. 1-hydroxy-1-methylcyclobutane (XI) acrylate (XII), b₁₃ 125°, which (8 g.), refluxed 6 hrs. with concentrated KOH-MeOH, gives XI, b. 117-20° (phenylurethan m. 139°). Ozonization of XII gives HCHO. Acidification of the alk. solution gives 1.5 g. IX. Heating 20 cc. II and 20 cc. AcOH 48 hrs. at 200°, diluting the mixture with H₂O, and distilling the washed (dilute Na₂CO₃, H₂O) oil give 9 g. of a mixture, b. 140-200°. Saponification with KOH-MeOH of the fraction, b. 130-60°, gives XI. Refluxing 4 g. of the fraction, b. 170-85°, 4 hrs. with 2 g. I in a little ether, distilling off the ether and unreacted reagents, and dissolving the residue in hot concentrated Na₂CO₂H give the Na salt of an adduct of I with α-terpinene, as fatty shiny scales. Heating the free acid above its m.p. gives the anhydride, m. 62-3°.

Chemische Berichte published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, Safety of 1-Methylcyclobutan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Dem’yanov, I. N. published the artcileVinyltrimethylene and its Derivatives, Category: alcohols-buliding-blocks, the publication is Zhurnal Russkago Fiziko-Khimicheskago Obshchestva (1913), 176-84, database is CAplus.

The alc. (a) obtained by shaking vinyltrimethylene (b) with H₂SO₄ (Gustavson, J. prakt. Chem., [2] 54, 104), not being oxidizable to an aldehyde or ketone, is doubtless tertiary; it b₇₅₅, 117.5-8.5° m. -5°, d₄²² 0.889, n₄²² 1.4315. Of the 2 formulas of (a), and preference is given to the 2nd. By converting (a) into an iodide (b₂₂ 50°) and treating the latter with Zn + AcOH a mixture of a hydrocarbon C₅H₁₀ (c) and the acetate of (a) was obtained. (c) b₇₅₃ 34-5°, d₀⁰ 0.6973, d₄⁰ 0.6805, n_D¹⁷ 1.3814; its formula is supposed to be. A hydrocarbon almost identical with (c) is more readily obtainable by reducing (b) with H + Pt black. The acetate of (c) b. 130-2.5°, d₄²⁰ 0.9351, n_D²⁰ 1.419.

Zhurnal Russkago Fiziko-Khimicheskago Obshchestva published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Gu, Yu-Rui published the artcileIminyl Radical-Triggered Intermolecular Distal C(sp³)-H Heteroarylation via 1,5-Hydrogen-Atom Transfer (HAT) Cascade, HPLC of Formula: 20117-47-9, the publication is Organic Letters (2019), 21(4), 917-920, database is CAplus and MEDLINE.

An efficient iron-catalyzed intermol. remote C(sp³)-H heteroarylation of alkyl ketones has been developed via an iminyl radical-triggered 1,5-hydrogen-atom transfer (HAT) cascade. This protocol was amenable to a wide variety of alkyl ketones and heteroaryls, thus providing a straightforward method for the late-stage functionalization of alkylketones and heteroaryls to obtain, e.g., I.

Organic Letters published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, HPLC of Formula: 20117-47-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Tomer, K. B. published the artcileMass spectrometry in structural and stereochemical problems. CCXXXI. Differentiation between tautomeric ion structures (phenol versus cyclohexadienone), Synthetic Route of 20117-47-9, the publication is Tetrahedron (1973), 29(22), 3491-6, database is CAplus.

Ion cyclotron resonance and pulsed double resonance spectra of ion-mol. reactions of bicyclo[2.2.2]oct-2-en-5,7-dione, PhOD, and C6D5OH with Pr2CO and 1-methylcyclobutanol were determined and the results applied to the structure determination of the C6H6O+ ion generated by electron impact induced expulsion of CH2:CO from PhOAc. The ion was PhO+, not cyclohexadienone+.

Tetrahedron published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C4H8F3NO, Synthetic Route of 20117-47-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Sengupta, Debasis published the artcileStudies on the Norrish type II reactions of aliphatic α-diketones and the accompanying cyclization and disproportionation of 1 : 4 biradicals, Safety of 1-Methylcyclobutan-1-ol, the publication is Journal of Photochemistry and Photobiology, A: Chemistry (1993), 75(2), 151-62, database is CAplus.

The Norrish type II process of several alkyl diketones was examined using the AM1 semi-empirical MO method with complete geometry optimization at the CI level in the RHF frame. UHF calculations of the triplet state of the diketone lead to a decrease in symmetry and strong localization of excitation on one carbonyl. The results of RHF+CI reveal that diketones have much lower reactivities than monoketones and the barriers to conformational change in diketones play an important role in the triplet reaction. The cyclization and disproportionation reactions of the resulting 1:4 biradicals were studied in the UHF frame and the results were compared with those derived from alkyl monoketones. In many respects, the reactions of 1:4 biradicals derived from alkyl monoketones parallel those derived from diketones. The free valence indexes on the radical sites correlate qual. with the radical-like reactivities.

Journal of Photochemistry and Photobiology, A: Chemistry published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C16H25BO2, Safety of 1-Methylcyclobutan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Cox, Eugene F. published the artcileSmall-ring compounds. XXXIV. Carbonium ion reactions of 1-methylcyclobutyl-, (1-methylcyclopropyl)carbinyl, and (β-methylallyl)carbinyl derivatives, Name: 1-Methylcyclobutan-1-ol, the publication is Journal of the American Chemical Society (1961), 2719-24, database is CAplus.

cf. CA 46, 1453a, 55, 22160d. (1-Methylcyclopropyl)carbinyl chloride (I) solvolyzed in 50% aqueous EtOH about 10 times faster than 1-methylcyclobutyl chloride (II) and as fast as Me₃CCl. Treatment of (1-methylcyclopropyl)carbinylamine (III) and 1-methylcyclobutylamine (IV) with HNO₂ gave only 1-methylcyclobutanol (V). CH₂:CMeCH₂CH₂NH₂ (VI) gave V as the only cyclic product. About 3% of the C¹⁴ content of V from the deamination of III-α-C¹⁴ (VII) was found at the 3-position. These results were interpretable in terms of classical carbonium ions and(or) substituted bicyclobutonium ion intermediates with fairly localized pos. charges. CH₂: CMeCO₂Me added to CH₂N₂-Et₂O at 0°, the resulting pyrazoline (90%) pyrolyzed in small quantities, and the combined crude product distilled yielded 316 g. crude Me ester (VIII) of 1-methylcyclopropanecarboxylic acid (IX), containing some unsaturated material, which treated in petr. ether with slightly alk. 0.25M KMnO₄ at 0° and worked up gave pure VIII, b_60.4-65.6 55.9-7.1°, n²⁵_D 1.4192-1.4193. The VIII hydrolyzed gave 90% IX, m. 32.4-4.3° (all m.ps. corrected); p-bromophenacyl ester m. 64.1-5.0° (50% aqueous EtOH); anilide m. 100.5-1.6° (50% aqueous EtOH), 100.6-1.3° (hexane). The Ag salt of IX in Freon-12 treated with Br gave 71% 1-methylcyclopropyl bromide (X), b₇₄₀ 77.2-8.0°, n²⁵_D 1.44711.4474. A small amount of X converted to the Grignard reagent and treated with PhNCO gave 1-methylcyclopropanecarboxanilide, m. 99.2-100.1°. IX was converted into 72% amide, m. 145.7-6.9°. CH₂:CMeCN with CH₂N₂ in Et₂O yielded 1-methylcyclopropanecarbonitrile (XI), b₇₆₅ 127.7-8.5°, n²⁵_D 1.4128. VIII reduced with LiAlH₄ gave (1-methylcyclopropyl)carbinol, b₇₃₉ 125.8-6.3°, n²⁵_D 1.42901.4292; 3,5-dinitrobenzoate m. 88.9-90.7° (C₆H₆-cyclohexane). XI reduced with Na-EtOH gave 56% III, b₇₆₄ 95.0-6.8°, n²⁵_D 1.4269. XI reduced with LiAlH₄ in Et₂O gave 70% III, b₇₆₁ 94.3-6.1°, n²⁵_D 1.4207-1.4273; N-phenyl-N’-(1-methylcyclopropylcarbinyl)thiourea m. 112.7-13.5° (95% EtOH). Me₂C(CH₂OH)₂ treated with PBr₃ and the dibromide cyclized gave 1,1-dimethylcyclopropane (XII), b₇₃₈ 19.0-20.0°. XII (74.5 g.) chlorinated by the method of Robert and Mazur (loc. cit.) gave 102 g. mixture of 49% I, 16% II, 14% CH₂: CHMeCH₂Cl, and 32% unreactive chloride, which carefully refractionated gave pure I, b₇₃₅, 83.0-3.9°, n²⁵_D 1.4045-1.4052. The H₂SO₄-catalyzed addition of H₂O to methylenecyclobutane (XIII), b₇₃₉ 41.0-2.0°, yielded 68% V, b₇₄₆ 117.8-18.3°, n²⁵_D 1.4332-1.4336. The hydrolysis of II yielded 40% V, b₇₅₆ 117.1-18.9°, n²⁵_D 1.4329. Cyclobutanone with MeMgBr gave 67% V, b₇₆₅ 118.3°, n²⁵_D 1.4332. HCl added to XIII yielded 81% II, b₇₄₂ 90.8-1.3°, n²⁵_D 1.4283-1.4287. MeCN (9.0 g.), 100 cc. glacial AcOH, and 20 cc. concentrated H₂SO₄ treated with stirring with 13.6 g. XIII, stirred 1 hr. at 20°, cooled, diluted with 300 cc. H₂O, basified with Na₂CO₃, and extracted with Et₂O, and the extract worked up yielded 17.7 g. N-(1-methylcyclobutyl)acetamide (XIV). XIV (10.0 g.) and 400 cc. 4N KOH in (CH₂OH)₂ refluxed 48 hrs. and continuously extracted with Et₂O yielded 3.1 g. IV, b₇₆₄ 85.5-6.0°, n²⁵_D 1.4200. XIII (13.6 g.), 11.0 g. 90% NaCN, and 25 cc. glacial AcOH treated at 0° with 25 cc. AcOH and 50 g. concentrated H₂SO₄ during 25 min., stirred 3 hrs. at 0°, 1 hr. at room temperature, and 45 min. at 55°, kept overnight at room temperature, treated slowly with stirring with 120 g. NaOH in 250 cc. H₂O, refluxed 8 hrs., and steam distilled, and the distillate (250 cc.) extracted 18 hrs. with Et₂O yielded 8.03 g. IV, b₇₄₅ 84.0-4.7°, n²⁵_D 1.4292-1.4293; N-phenyl-N’-(1-methylcyclobutyl)thiourea, m. 135.3-5.8° (aqueous EtOH). CH₂:CMeCH₂CH₂Cl was converted by the method of Kharasch and Fuchs (CA 38, 6281⁹) in 35% yield to CH₂:CMeCH₂CH₂OH (XV), b₇₄₁ 127.9-30.4°, n²⁵_D 1.43051.4312; 1-naphthylurethan m. 66.7-7.3° (petr. ether). XV (8.61 g.), 25 cc. dry Et₂O, 18.5 g. Bu₃N treated with stirring at 0° with 11.9 g. SOCl₂ during 3 hrs. gave CH₂:CMeCH₂CH₂Cl (XVI), b₇₃₉, 101.0-2.7°, n²⁵_D 1.4301-4305. XVI with K phthalimide in HCONMe₂ yielded 85% N-I-(3-methyl-3-butenyl)phthalimide (XVII), m. 51.2-2.8°. Hydrazinolysis of XVII in HClO₄ gave 26% VI, b₁₀₁ 47.6-8.5°, n²⁵_D 1.4288. CH₂:CMeCHO with MeMgBr yielded CH₂:CMeCH(OH)Me, b_59.9-60.4 54.6-6.8°, n²⁵_D 1.4241-1.4242. 3-Methyl-3-carbomethoxy-l-pyrazoline pyrolyzed and the high-boiling fractions of the product redistilled gave Me tiglate, b₇₄₀ 136.9-7.1°, n²⁵_D 1.4338, which reduced with LiAlH₄ yielded about 40% MeCH:CMeCH₂OH, b. 137.6-7.9°, n²⁵_D 1.4386-1.4401. III (12.8 g.) in 50 cc. H₂O and 180 cc. 1.0N HClO₄ treated during 0.5 hr. with stirring with 30 g. NaNO₂ in 100 cc. H₂O, heated 1 hr. at 50-65 mm., and steam-distilled, the aqueous phase of the distillate saturated with K₂CO₃ and extracted with Et₂O, and the combined organic layer and extract distilled gave 0.72 g. V. The Grignard reagent from X carbonated in vacuo with C¹⁴O₂, diluted with inactive IX, and distilled gave IX-α-C¹⁴, b_19.2-19.4 96.6-7.4° (radioactive yield 88%), which was converted to the amide and further by reduction with LiAlH₄ to 51% VII. VII treated in AcOH with NaNO₂ in portions, poured into 20% aqueous NaOH, and extracted with Et₂O, and the resulting mixture of labeled alc. and acetate reduced with LiAlH₄ gave V. VII.HCl oxidized with alk. KMnO₄ and a portion of the resulting acid converted to the amide gave a material containing 0.128 microcuries/millimole; another portion of the acid was subjected to a Schmidt degradation and the resulting amine converted to the benzamide, m. 161.7-3.0°, containing 0.000-37 microcuries/millimoles, corresponding to 0.29% of the original activity. The rates of the solvolysis in 50% EtOH were determined for the following compds (reaction temperature, and k₁ × 10⁵/sec. given): cyclopropyl bromide, 130°, 0.26; X, 130°, 10.5; II, 50°, 61.7; II, 30°, 7.15; I, 30°, 69; XVI, 90°, 0.17.

Journal of the American Chemical Society published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, Name: 1-Methylcyclobutan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Brown, Pamela published the artcileβ-Lactamase-stable penicillins. Synthesis and structure-activity relationships of (Z)-alkyloxyimino penicillins; selection of BRL 44154, Safety of 1-Methylcyclobutan-1-ol, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1991), 881-91, database is CAplus.

A series of (Z)-2-alkyloxyimino-2-(2-aminothiazol-4-yl)acetamidopenicillins I (R = Me, Et, CHMe₂, CMe₃, cycloalkyl) were prepared New methodol. was developed to prepare tertiary alkyl oximes. High stability to β-lactamases and potent antibacterial activity have been achieved against Gram-pos. and certain Gram-neg. organisms. Activity against methicillin-resistant Staphylococcus aureus was an unexpected finding. BRL 44154 (I; R = cyclopentyl) has been selected for further study.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, Safety of 1-Methylcyclobutan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts