Tag: M.W=100-200

Electric Literature of 612-16-8, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 612-16-8, name is (2-Methoxyphenyl)methanol. This compound has unique chemical properties. The synthetic route is as follows.

General procedure: The mixture of benzyl alcohol (1a, 0.3244 g, 3.0 mmol,1.5 equiv.), 2-aminopyridine (6a, 0.1882 g, 2.0 mmol), and NaOH (0.0400 g, 1.0 mmol, 50 mol%)was sealed under air in a 20 mL Schlenk tube and then stirred at 150 oC for 24 h. After completion,the reaction was monitored by TLC and/or GC-MS (>99% GC conversion) and the crude productwas purified by column chromatography using ethyl acetate and petroleum ether as eluent. Thetarget product 7a was obtained in 89% isolated yield. White solid. 1H NMR (500 MHz, CDCl3): delta 8.10 (dd,J = 5.0 Hz, J = 1.0 Hz, 1H), 7. 39-7.36 (m, 1H), 7.31 (d, J = 7.5 Hz, 1H), 7.26-7.23 (m, 1H),6.92-6.87 (m, 2H), 6.56-6.54 (m, 1H), 6.39 (d, J = 7.5 Hz, 1H), 5.01 (b, 1H), 4.48 (d, J = 6.0 Hz,2H), 3.85 (s, 3H). 13C NMR (125.4 MHz, CDCl3): delta 158.9, 157.4, 148.2, 137.3, 128.8, 128.3, 127.1,120.5, 112.8, 110.2, 106.7, 55.3, 41.7. MS (EI): m/z (%) 214 (60), 183 (92), 136 (45), 121 (35), 105(31), 91 (100), 78 (48), 65 (25), 51 (14).

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 612-16-8, (2-Methoxyphenyl)methanol.

Reference:
Article; Li, Xiaohui; Li, Shuangyan; Li, Qiang; Dong, Xu; Li, Yang; Yu, Xiaochun; Xu, Qing; Tetrahedron; vol. 72; 2; (2016); p. 264 – 272;,
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Electric Literature of 42514-50-1, Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 42514-50-1, name is 3-Amino-3-methylbutan-1-ol. A new synthetic method of this compound is introduced below.

Component XI [preparation of the compound of formula (IIIb)]N-tert-butoxycarbonyl-4,4-dimethyl-[1,2,3]oxathiazinane-2,2-dioxide a. tert-butyl (3-hydroxy-1,1-dimethylpropyl)-carbamidate 3-amino-3-methylbutan-1-ol (200.0 g, 1.94 mol) is dissolved in ethyl acetate (0.75 l) and within one hour combined with a solution of di-tert-butyl-dicarbonate (435.0 g, 1.99 mol) in ethyl acetate (0.75 l). After the addition has ended the reaction mixture is stirred for another 30 min. After elimination of the solvent the title compound is obtained, which is used in the next step without further purification. Yield: 412.5 g 1H-NMR (DMSO, 400 MHz): 1.19 (s, 9H); 1.36 (s, 6H); 1.68-1.74 (m, 2H); 3.42-3.50 (m, 2H); 4.39 (t, J=4.8, 1H); 6.36 (br s, 1H). Alternatively tert-butyl (3-hydroxy-1,1-dimethylpropyl)-carbamidate may also be prepared using the methods described for example in J. of Labell. Compounds & Radioph. 2001, 44(4), 265-275 or der WO 03/037327, p. 82/83.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,42514-50-1, its application will become more common.

Reference:
Patent; Walter, Rainer; Hamilton, Bradford S.; Trieselmann, Thomas; Netherton, Matthew R.; Santagostino, Marco; Konetzki, Ingo; US2007/105906; (2007); A1;,
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Adding a certain compound to certain chemical reactions, such as: 7397-62-8, Butyl 2-hydroxyacetate, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, SDS of cas: 7397-62-8, blongs to alcohols-buliding-blocks compound. SDS of cas: 7397-62-8

47.6 g (0.5 mol) of phenol, 134.2 g (1.04 mol) of butyl hydroxyacetate, and 0.36 g of catalyst Mo2P5-MCM-48 (molar ratio of Mo1P3 and MCM-48: 25:100) were mixed and stirred, and the temperature was raised to 100-120 C, the rectification water was reacted for 2 hours in this process. When the top of the column is substantially anhydrous, the reaction is completed, the temperature is lowered to room temperature, the catalyst is removed by suction filtration, the catalyst is continuously activated after the catalyst is activated, the obtained mother liquid is distilled to recover the solvent, and then the unsubstituted butyl hydroxyacetate and phenol are separated by distillation to obtain the product benzene. Butyl oxyacetate 69.6 g, purity 98.2%, selectivity 99.2%, yield 65.78%. The prepared butyl phenoxyacetate was detected by nuclear magnetic resonance, and the nuclear magnetic resonance spectrum was as shown in Fig. 2.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,7397-62-8, Butyl 2-hydroxyacetate, and friends who are interested can also refer to it.

Reference:
Patent; Shandong Runbo Biological Technology Co., Ltd.; Sun Guoqing; Hou Yongsheng; Chi Zhilong; He Enjing; Hu Yishan; (8 pag.)CN108947841; (2018); A;,
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Reference of 495-76-1, Adding some certain compound to certain chemical reactions, such as: 495-76-1, name is Benzo[d][1,3]dioxol-5-ylmethanol,molecular formula is C8H8O3, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 495-76-1.

Dissolve 5.8 ml (0.06 mol) of phosphorus tribromide in 20 ml of ether and slowly instill 7.1 g (0.05 mol)In a solution of 3,4-dioxymethylenebenzaldehyde in ether, the reaction was stirred at 0C for 3 hours. After stopping the reaction,Saturated sodium carbonate solution was quenched, and the mixture was partitioned and washed with saturated saline water and dried over anhydrous sodium sulfate for 8 hours.The desiccant was filtered off and the solvent was evaporated under reduced pressure to give 8.9 g of a pale yellow liquid of Vb in a yield of 83.7%.

According to the analysis of related databases, 495-76-1, the application of this compound in the production field has become more and more popular.

Reference:
Patent; The Chinese People’s Liberation Army Military Academy Of Medical Sciences Poison Pharmaceutical Institute; Zhong Bohua; Zhang Ping; He Xinhua; Shi Weiguo; Fan Shiyong; Yao Yishan; Jia Hongxin; (20 pag.)CN103804341; (2018); B;,
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Electric Literature of 1875-88-3 , The common heterocyclic compound, 1875-88-3, name is 2-(4-Chlorophenyl)ethanol, molecular formula is C8H9ClO, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

The present invention uses SM-A and LCS-1 condensation to prepare Impurity F.Specific operations are as follows: 40g of p-chlorophenylacetic acid was added to 400ml of tetrahydrofuran,Stirring at room temperature dissolved; lithium aluminum hydride in batches, temperature control at 25 ~ 30 ,After the reaction was stirred for 20 hours, 200 ml of water was added slowly and the addition was completed.Add ethyl acetate 400ml stirred 30min, liquid separation, organic phase plus 200ml saturated brine and dried over 20g anhydrous sodium sulfate, filtered, the filtrate was concentrated under reduced pressure 40 ~ 45 ,36.7 g of oil (S2) was obtained; S2 was added to the reaction flask, the temperature was lowered to 0 to 5 C in ice water,Slowly dropping phosphorus tribromide, dropping temperature during the course of 0 ~ 5 , the dropwise addition is completed,Heated to 25 ~ 30 , incubated for 3h,Add water 80ml, stirred 30min, liquid separation, the aqueous phase was extracted with dichloromethane 100ml × 2,The organic phases were combined and concentrated under reduced pressure to give an oil (S3): 48.8 g. Yield: 94.9%.

The synthetic route of 1875-88-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Shandong Kexing Biological Products Co., Ltd.; Cui Ning; Dong Xiangjun; Hao Zhihai; (34 pag.)CN106478506; (2017); A;,
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Adding a certain compound to certain chemical reactions, such as: 455-01-6, 2-(3-(Trifluoromethyl)phenyl)ethanol, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, HPLC of Formula: C9H9F3O, blongs to alcohols-buliding-blocks compound. HPLC of Formula: C9H9F3O

General procedure: To a stirred solution of betulonic acid (3, 0.883 g, 1.94 mmol) in anhydrous CH2Cl2 (10 mL) was added oxylchoride (1.70 mL,19.45 mmol) at rt and kept for 2 h. The solvent was removed under vaccum, and another 3 mL CH2Cl2 was added to the residue and then removed again. To the residue was added anhydrous CH2Cl2 (8 mL), 2-cyclopropylethanol (0.5025 g, 5.83 mmol) and triethyl amine (2.71mL, 19.44 mmol), and the mixture was stirred for 24 h at rt. After removal of solvent under vaccumn, the residue was purified by silica gel column chromatography (hexane/EtOAcas eluent) to provide desired compound 10 (760 mg). White solid, yield 75%.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,455-01-6, 2-(3-(Trifluoromethyl)phenyl)ethanol, and friends who are interested can also refer to it.

Reference:
Article; Li, Jizhen; Goto, Masuo; Yang, Xiaoming; Morris-Natschke, Susan L.; Huang, Li; Chen, Chin-Ho; Lee, Kuo-Hsiung; Bioorganic and Medicinal Chemistry Letters; vol. 26; 1; (2016); p. 68 – 71;,
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The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 186602-93-7, name is (2-Amino-4-(trifluoromethyl)phenyl)methanol. This compound has unique chemical properties. The synthetic route is as follows. Product Details of 186602-93-7

5.1.105 6,7-Didehydro-17-methyl-7′-trifluoromethylquinolino[2′,3′:6,7]morphinan-3,14beta-diol hydrochloride (SYK-72) SYK-72 was prepared from compound 28c according to the procedure used to prepare SYK-27. Yield, 73%; a white amorphous solid. Mp 233-234 C (dec). Anal. Calcd for C25H23F3N2O2·1.0HCl·0.8H2O: C, 61.11; H, 5.25; N, 5.70. Found: C, 61.11; H, 5.36; N, 5.83.

With the rapid development of chemical substances, we look forward to future research findings about 186602-93-7.

Reference:
Article; Ida, Yoshihiro; Matsubara, Ayaka; Nemoto, Toru; Saito, Manabu; Hirayama, Shigeto; Fujii, Hideaki; Nagase, Hiroshi; Bioorganic and Medicinal Chemistry; vol. 20; 19; (2012); p. 5810 – 5831;,
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Reference of 3973-18-0, Adding some certain compound to certain chemical reactions, such as: 3973-18-0, name is Propynol ethoxylate,molecular formula is C5H8O2, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 3973-18-0.

General procedure: Alkynes 16 or 11a-11d (6mmol) were added to a solution of salinomycin azido derivative 15 (10mmol), Na ascorbate (1mmol), and copper sulphate (3mmol) in tert-butanol (5mL) at 4C, followed by adding water (5mmol), and stirring continuously for 24hat 55C. Then, the reaction was extracted with ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous Na2SO4, filtered, and concentrated in vacuum. The product was purified by flash chromatography to give 1,2,3-triazole derivatives 3a-3g and 4a-4d.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 3973-18-0, Propynol ethoxylate, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Huang, Minjian; Deng, Zixin; Tian, Jian; Liu, Tiangang; European Journal of Medicinal Chemistry; vol. 127; (2017); p. 900 – 908;,
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Adding a certain compound to certain chemical reactions, such as: 67853-03-6, Methyl 3-(hydroxymethyl)benzoate, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, Quality Control of Methyl 3-(hydroxymethyl)benzoate, blongs to alcohols-buliding-blocks compound. Quality Control of Methyl 3-(hydroxymethyl)benzoate

Entry 27 Boron trifluoride etherate (25 muL, 0.20 mmol, 0.2 eq.) was added dropwise at -20C under argon to a stirred solution of 2,3,4,6-tetra-O-acetyl-alpha-d-galactopyranosyl trichloroacetimidate (1c) (500 mg, 1.01 mmol, 1 eq.) and methyl 3-hydroxymethylbenzoate (2d) (503 mg, 3.03 mmol, 3 eq.) in freshly distilled CH2Cl2 (8 mL). After 1 hour, Et3N (0.2 mL) was injected into the reaction mixture. Then, the solvent was evaporated, the residue was purified by silica gel column chromatography (PE:EtOAc, 5:1 to 3:1) to afford (1-methoxycarbonylphen-3-yl)methyl 2,3,4,6-tetra-O-acetyl-beta-d-galactoside (3e) as a white foam (397 mg, 79%). Rf = 0.27 (PE:EtOAc = 2:1); [alpha]D20 = -31.8 (c = 0.4, CH2Cl2); 1H NMR (400 MHz, CDCl3), delta (ppm): 7.94 (m, 2H, 2 HAr), 7.46 (d, J = 7.6 Hz, 1H, HAr), 7.40 (t, J = 8.0 Hz, 1H, HAr), 5.36 (d, J = 2.9 Hz, 1H, H4), 5.26 (dd, J = 10.4, 8.0 Hz, 1H, H2), 4.97 (dd, J = 10.5, 3.4 Hz, 1H, H3), 4.91 (d, J = 12.6 Hz, 1H, OCH2a), 4.65 (d, J = 12.6 Hz, 1H, OCH2b), 4.51 (d, J = 8.0 Hz, 1H, H1), 4.21-4.06 (m, 2H, H6), 3.91-3.85 (m, 4H, OMe, H5), 2.13 (s, 3H, COCH3), 2.03 (s, 3H, COCH3), 2.03 (s, 3H, COCH3), 1.95 (s, 3H, COCH3); 13C NMR (100 MHz, CDCl3), delta (ppm): 170.5 (C=O), 170.3 (C=O), 170.2 (C=O), 169.6 (C=O), 166.8 (COOMe), 137.3 (CAr), 132.2 (CAr-H), 130.4 (CAr), 129.2 (CAr-H), 128.70 (CAr-H), 128.65 (CAr-H), 100.0 (C1), 70.9 (C3), 70.8 (C5), 70.1 (OCH2), 68.8 (C2), 67.1 (C4), 61.3 (C6), 52.2 (OMe), 20.7 (3 × COCH3), 20.6 (COCH3); HRMS m/z: calcd. for C23H28NaO12, [M+Na]+ 519.1473, found 519.1466.

The synthetic route of 67853-03-6 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Wang, Shuai; Lafont, Dominique; Rahkila, Jani; Picod, Benjamin; Leino, Reko; Vidal, Sebastien; Carbohydrate Research; vol. 372; (2013); p. 35 – 46;,
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Synthetic Route of 68327-04-8, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 68327-04-8, name is (1S,2S)-2-Aminocyclopentanol hydrochloride, molecular formula is C5H12ClNO, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

Examples of Synthesis of Carboxamides from Diketoacid Precursor; Representative Example 1; (l S,2S)-4-(5-(2,4-difluorobenzyl)-l -(2-fluorobenzyl)-2-oxo-l,2-dihydropyridin-3-yl)-2- hydroxy-N-(2-hydroxycyclopentyl)-4-oxobut-2-enamide (9).; To a chilled solution of the 4-(l-(2-fluorobenzyl)-5-(4-fluorobenzyl)-2-oxo-l ,2- dihydropyridin-3-yl)-2-hydroxy-4-oxobut-2-enoic acid 8 (150 mg, 0.338 mmol) indimethyl formamide (DMF) (2.0 mL), was added hydroxybenzotriazole (HOBT) (50 mg, 0.372 mmol), followed by l-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride EDCI-HCl (71 mg, 0.372 mmol). The resulting mixture was stirred for 30 min. A solution of ( l S,2S)-(+)-trans-2-aminocyclopentanol hydrochloride and NaHC03 (31 mg, 0.372 mmol) was added. The resulting mixture was stirred for 2h at 0- 5 C. Thin layer chromatography 05918344(TLC) analysis indicated completion, hence cold water was added to the reaction mixture and then extracted with ethyl acetate (2 x 20 m L). The combined organic phase was separated and washed with water twice, then once with IN HC1 solution, then saturated aqueous NaHCO.? solution. Concentration in vacuo afforded the crude product which was passed through a short plug of silica gel eluting with chloroform, the eluent was concentrated and the residual triturated with hexanes affording the product as a yellow solid in 117 mg (66.0%). The residual solvent was removed in vacuo affording pure product as a yellow solid, mp 60.0- 62.9 C, [a]20D +24.0 (c 0.01, MeOH}. UV (MeOH) 396 nm (epsilon 14,455), 318 nm (epsilon 6327). NMR (CDCI3, 500 MHz): delta 15.33 (bs, IH), 8.16 (d, IH, J= 2.0Hz), 8.08 (s, 111), 7.61-6.85 (m, 9Eta), 5.22 (s, 2Eta), 4.11 (m, IH), 3.94 (m, IH), 3.78 (s, IH), 2.23 (m. III).2.10 (m, IH), 1.88 (m, IH), 1.78 (m, 211).1.59 (m, IH).13C NMR (CDCI3, 125 MHz): delta 181.3, 180.6, 163.4, 163.3, 162.4, 162.1, 162.0, 161.4, 161.3, 160.4, 160.1, 160.0, 159.2, 145.5, 143.9, 142.3, 141.6, 132.4.1 2.4.132.3, 131.5.131.4, 131.3, 131.3, 131.2, 130.7, 130.6, 125.0, 124.9, 124.8, 122.8, 122.7, 122.5, 122.2.122.2, 122.1, 122.1.117.1, 115.9, 115.7, 115.6, 111.9, 111.9, 111.8, 111.7, 104.7, 104.5, 104.3,98.3,79.5,79.3,61.0,60.6,51.5,47.7,47.3, 32.9, 32.8, 32.7, 30.8, 30.7, 30.5, 21.7, 21.5. HRMS (M+H)+ calculated mass 527.1794 for C28H26F3N2O5, found 527.1799.

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 68327-04-8, (1S,2S)-2-Aminocyclopentanol hydrochloride.

Reference:
Patent; UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC.; NAIR, Vasu; OKELLO, Maurice, O.; NISHONOV, Abdumalik, A.; MISHRA, Sanjaykumar; WO2011/71849; (2011); A2;,
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