催化Sn(OTf)2诱导的线性,含芳基的烯丙基N,O-乙缩醛的环化反应生成乙烯基取代的四氢异喹啉和四氢-1 H -β-咔啉。乙烯基部分在所得产物中的有用性通过生物碱结构的各种关键结构单元的合成得到证明。α-乙烯基部分用于[2,3]σ重排,闭环置换和基于交叉复分解的长春瑞特,抗缺氧剂和长春胺型天然产物的合成成员的合成。
Palladium-Catalyzed Cross-Coupling of <i>N</i>-Sulfonylaziridines with Boronic Acids
作者:Megan L. Duda、Forrest E. Michael
DOI:10.1021/ja410686v
日期:2013.12.11
A mild palladium-catalyzed cross-coupling of unsubstituted and 2-alkyl-substituted aziridines with arylboronic acid nucleophiles is presented. The reaction is highly regioselective and compatible with diverse functionality. A catalytic amount of base, a sterically demanding triarylphosphine ligand, and a phenol additive are critical to the success of the reaction. Coupling of a deuterium-labeled substrate established that ring opening of the aziridine occurs with inversion of stereochemistry.