作者:Masaharu Sugiura、Yasuhiko Ashikari、Makoto Nakajima
DOI:10.1021/acs.joc.5b01217
日期:2015.9.4
TiCl4-promoted aldol reaction of ketones as aldol acceptors followed by elimination of the titanoxy group from the Ti-aldolates affords β,β-disubstituted α,β-unsaturated carbonyl compounds in a one-pot procedure. The use of additives, such as DMF, N,N,N′,N′-tetramethylethylenediamine, and pyridine, in the elimination step was found to be important.
TiCl 4促进的酮作为醛醇受体的醛醇缩醛反应,然后从Ti-醛醇酸酯中消除钛氧基,可以一锅法制得β,β-二取代的α,β-不饱和羰基化合物。发现在消除步骤中使用添加剂,例如DMF,N,N,N ',N'-四甲基乙二胺和吡啶是重要的。