Synergistic Pd/Amine-Catalyzed Stereodivergent Hydroalkylation of 1,3-Dienes with Aldehydes: Reaction Development, Mechanism, and Stereochemical Origins
作者:Hongfa Wang、Ruiyuan Zhang、Qinglong Zhang、Weiwei Zi
DOI:10.1021/jacs.1c02220
日期:2021.7.28
that allowed us to achieve the first stereodivergent hydroalkylation reactions of 1,3-dienes with aldehydes. By choosing an appropriate combination of chiral palladium and amine catalysts, we could obtain either syn or anti coupling products, and this method therefore provides highly diastereo- and enantioselective access to complementary diastereomers of chiralaldehydes with α,β-vicinal stereocenters
Asymmetric Hydrosilylation of β-Silyl Styrenes Catalyzed by a Chiral Palladium Complex
作者:Yi-Fan Wang、Yu-Han He、Yan Su、Yang Ji、Rui Li
DOI:10.1021/acs.joc.1c02734
日期:2022.3.4
catalyst for asymmetrichydrosilylation of β-silyl styrenes with trichlorosilane and 23 1,2-bis(silyl) chiral compounds were produced. Good to excellent enantioselectivities were observed with 1-aryl-2-silyl ethanols, where the trichlorosilyl groups of the hydrosilylation products were selectively converted into a hydroxyl group in the presence of pre-installed trialkylsilyl groups. Asymmetric hydrosilylation