In 2008,Chemistry – An Asian Journal included an article by Gabert, Andrea J.; Schrock, Richard R.; Muller, Peter. Computed Properties of C24H34O2. The article was titled 《Synthesis of bifunctional imido alkylidene bispyrrolide complexes of molybdenum and their conversion into bifunctional imido alkylidene diolate complexes that can be employed as ROMP initiators》. The information in the text is summarized as follows:
Addition of four equivalent of lithium 2,5-dimethylpyrrolide to a solution of [Mo(NAr)(ORF6)2(CHC5H4)]2Fe (ORF6 = OCMe(CF3)2) in dichloromethane led to [Mo(NAr)(Me2Pyr)2(CHC5H4)]2Fe (I) where Me2Pyr = 2,5-dimethylpyrrolide and lithium hexafluoro-tert-butoxide, which crystallizes out upon cooling the reaction mixture to -35°C. Attempts to prepare parent pyrrolide complexes analogous to I resulted in the formation of a mixture of two products. The one that could be isolated contains one equivalent of lithium pyrrolide per molybdenum, that is [Mo(NAr)(Pyr)3(CHC5H4)]2FeLi2 (II). The X-ray structure obtained shows it to be a dimer of dimers in which each lithium atom is bound to three pyrrolides. Addition of four equivalent of lithium 2,5-dimethylpyrrolide to [Mo(NAr)(ORF6)2]2(DME)2(CH-1,4-C6H4CH) in cold DME produced [Mo(NAr)(Me2Pyr)2]2(CH-1,4-C6H4CH) (III) in good yield, in which the bridging alkylidene is derived from 1,4-divinylbenzene. Three equivalent of (S)-H2[Biphen] are required for a clean reaction with II to form [Mo(NAr)(Biphen)(CHC5H4)]2Fe (IV) (H2[Biphen]=3,3′-di-tert-butyl-5,5′,6,6′-tetramethyl-1,1′-biphenyl-2,2′-diol), Li2[Biphen], and two equivalent of pyrrole. Reactions involving III with the chiral diols are the best behaved. Brown [Mo(NAr)(Benz2Bitet)]2(CH-1,4-C6H4CH) (V) can be isolated upon addition of (R)-H2[Benz2Bitet] H2[Benz2Bitet] = (3,3′-dibenzhydryl-5,5′,6,6′,7,7′,8,8′-octahydro-1,1′-binaphthyl-2,2′-diol) to 4, while addition of (R)-H2[Mes2Bitet] (H2[Mes2Bitet] = 3,3′-dimesityl-5,5′,6,6′,7,7′,8,8′-octahydro-1,1′-binaphthyl-2,2′-diol) to 4 yields [Mo(NAr)(Mes2Bitet)]2(CH-1,4-C6H4CH) (VI). Compounds IV, V, and VI were employed as initiators for the polymerization of 2,3-dicarbomethoxynorbornadiene (DCMNBD) and 2,3-bis(trifluoromethyl)norbornadiene (NBDF6).(R)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol(cas: 329735-68-4Computed Properties of C24H34O2) was used in this study.
(R)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol(cas: 329735-68-4) belongs to phenols. Phenols are more acidic than typical alcohols. The acidity of the hydroxyl group in phenols is commonly intermediate between that of aliphatic alcohols and carboxylic acids (their pKa is usually between 10 and 12).Computed Properties of C24H34O2
Referemce:
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Alcohols – Chemistry LibreTexts