An Efficient Protocol for the Palladium-Catalyzed Asymmetric Decarboxylative Allylic Alkylation Using Low Palladium Concentrations and a Palladium(II) Precatalyst
作者:Alexander N. Marziale、Douglas C. Duquette、Robert A. Craig、Kelly E. Kim、Marc Liniger、Yoshitaka Numajiri、Brian M. Stoltz
DOI:10.1002/adsc.201500253
日期:2015.7.6
catalytic allylic alkylation for the synthesis of 2‐alkyl‐2‐allylcycloalkanones and 3,3‐disubstituted pyrrolidinones, piperidinones and piperazinones has been previously reported by our laboratory. The efficient construction of chiral all‐carbon quaternary centers by allylic alkylation was previously achieved with a catalyst derived in situ from zero‐valent palladium sources and chiral phosphinooxazoline
ASYMMETRIC CATALYTIC DECARBOXYLATIVE ALKYL ALKYLATION USING LOW CATALYST CONCENTRATIONS AND A ROBUST PRECATALYST
申请人:Stoltz Brian M.
公开号:US20160280623A1
公开(公告)日:2016-09-29
This invention provides efficient and scalable enantioselective methods that yield 2-alkyl-2-allylcycloalkyanone compounds with quaternary stereogenic centers. Methods include the method for the preparation of a compound of formula (I):
comprising treating a compound of formula (II) or (III):
with a palladium (II) catalyst under alkylation conditions.
Deracemization of Quaternary Stereocenters by Pd-Catalyzed Enantioconvergent Decarboxylative Allylation of Racemic β-Ketoesters
作者:Justin T. Mohr、Douglas C. Behenna、Andrew M. Harned、Brian M. Stoltz
DOI:10.1002/anie.200502018
日期:2005.10.28
[EN] ASYMMETRIC CATALYTIC DECARBOXYLATIVE ALKYL ALKYLATION USING LOW CATALYST CONCENTRATIONS AND A ROBUST PRECATALYST<br/>[FR] ALKYLATION DÉCARBOXYLATIVE CATALYTIQUE ASYMÉTRIQUE D'ALKYLE AU MOYEN DE FAIBLES CONCENTRATIONS DE CATALYSEUR ET D'UN PRÉCATALYSEUR ROBUSTE
申请人:STOLTZ BRIAN M
公开号:WO2016160579A1
公开(公告)日:2016-10-06
This invention provides efficient and scalable enantioselective methods that yield 2-alkyl-2-allylcycloalkyanone compounds with quaternary stereogenic centers. Methods include the method for the preparation of a compound of formula (I), comprising treating a compound of formula (II) or (III), with a palladium (II) catalyst under alkylation conditions.