Sosnovskikh, V. Ya.; Ovsyannikov, I. S.; Aleksandrova, I. A., Journal of Organic Chemistry USSR (English Translation), 1992, vol. 28, # 3.1, p. 420 - 426
The direct catalytic aldol reaction of trifluoromethyl -ketoneswith ketones has been accomplished. The reaction was achieved inthe presence of 10 mol% Et 2 Zn and N, N′-dimethylethylenediamineat ambient temperature to give the expected aldol-type productsin high yields (up to 99%).
完成了三氟甲基酮与酮的直接催化羟醛反应。该反应在环境温度下在 10 mol% Et 2 Zn 和 N,N'-二甲基乙二胺存在下完成,以高产率(高达 99%)得到预期的醇醛型产物。
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.