Titanocene(II)-Promoted, One-Pot, Three-Component Coupling of Thioacetals, Alkynyl Sulfones, and Carbonyl Compounds: Highly Stereoselective Formation of <i>tert</i>-Homopropargyl Alcohols
作者:Takeshi Takeda、Maiko Ando、Takenori Sugita、Akira Tsubouchi
DOI:10.1021/ol071077w
日期:2007.7.1
Titanocene alkylidene complexes, generated by desulfurizative titanation of thioacetals with Cp2Ti[P(OEt)3]2, reacted with alkynyl methyl sulfones to produce organotitanium species, which gave tert-homopropargyl alcohols with high diastereoselectivity on treatment with aromatic and alpha,beta-unsaturated ketones.
通过用Cp2Ti [P(OEt)3] 2硫代乙缩醛的脱硫钛化反应生成的二茂钛亚烷基配合物,与炔基甲基砜反应生成有机钛物种,经芳族和α,β-不饱和芳烃处理后,得到对映体选择性高的对叔炔丙醇。酮。