Bispalladacycle Catalyzed Nucleophilic Enantioselective Allylation of Aldehydes by Allylstannanes
作者:Martin Heberle、Sarah Legendre、Nick Wannenmacher、Manuel Weber、Wolfgang Frey、René Peters
DOI:10.1002/cctc.202200093
日期:2022.5.6
Bimetallic catalysis: The first palladium catalysts capable of controlling asymmetric nucleophilic allylations of aldehydes with allyltributyltin are reported. Unprecedented TONs for this reaction type were achieved (up to 620). The method is also tolerating electronically and sterically unfavorable substrates. A transmetallation occurs, favoring an η1-allyl coordination mode with the reported bispalladacycle
双金属催化:报道了第一个能够控制醛与烯丙基三丁基锡的不对称亲核烯丙基化的钯催化剂。这种反应类型的 TON 达到了前所未有的水平(高达 620)。该方法还可以容忍电子和空间上不利的底物。发生金属转移,有利于 η 1 -烯丙基配位模式与报道的双钯环催化剂,而对于相应的单钯环催化剂,非生产性的 η 3 -配位占主导地位。