Aldol Reactions of Ketone Donors with Aryl Trifluoromethyl Ketone Acceptors Catalyzed by 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) for Concise Access to Aryl- and Trifluoromethyl- Substituted Tertiary Alcohols
作者:Dongxin Zhang、Fujie Tanaka
DOI:10.1002/adsc.201500497
日期:2015.11.16
products were obtained in good to high yields under mild conditions. The CC bonds of the aldol reactions formed in perfect regioselectivities at the methyl group of the alkyl methyl ketones, at the γ-position of the β-keto esters, and at the methyl group of the β-methyl-substituted cyclic enones. For the aldol products from the reactions of β-keto esters, the enantiomerically pure forms were obtained by
Sosnovskikh, V. Ya.; Ovsyannikov, I. S.; Aleksandrova, I. A., Journal of Organic Chemistry USSR (English Translation), 1992, vol. 28, # 3.1, p. 420 - 426
作者:Sosnovskikh, V. Ya.、Ovsyannikov, I. S.、Aleksandrova, I. A.
DOI:——
日期:——
Papain-catalyzed aldol reaction for the synthesis of trifluoromethyl carbinol derivatives
作者:Jun-Tao Guo、Yang Xiang、Zhi Guan、Yan-Hong He
DOI:10.1016/j.molcatb.2016.05.014
日期:2016.9
Papain from Carica papaya demonstrated catalytic promiscuity was first discovered to catalyze the synthesis of trifluoromethyl carbinol derivatives via aldol reaction between alpha,alpha,alpha-trifluoromethyl ketones and aliphatic ketones in a mixed solvent of DMF and water. The best results of the corresponding aldol products with up to 99% yield and 30% ee were achieved. (C) 2016 Elsevier B.V. All rights reserved.