Palladium-Catalyzed Decarboxylative Asymmetric Allylic Alkylation of β-ketoesters: An Unusual Counterion Effect
作者:Barry M. Trost、Benjamin Schäffner、Maksim Osipov、Donna A. A. Wilton
DOI:10.1002/anie.201007803
日期:2011.4.4
allyl chloroformate and their β‐ketoesters by using the same catalyst system (see scheme; dba=dibenzylideneacetone, 1,2‐DCE=1,2‐dichloroethane, THF=tetrahydrofuran). The details of this remarkable effect were investigated by performing scavenging experiments and a variety of substrates were successfully used in the procedure.
买一送一:在相同的催化剂体系下,氯甲酸烯丙酯及其β-酮酸酯可以通过一锅法获得四氢萘酮和茚满酮衍生物的对映异构体(请参阅方案; dba =二苄叉基丙酮,1,2-DCE = 1,2-二氯乙烷,THF =四氢呋喃)。通过执行清除实验研究了这种显着效果的细节,并成功地在该过程中使用了多种基材。