[EN] STEREOSELECTIVE SYNTHESIS OF HIGHLY SUBSTITUTED ENAMIDES<br/>[FR] SYSNTHÈSE STÉRÉOSÉLECTIVE D'ÉNAMIDES À FORTE SUBSTITUTION
申请人:UNIV NANYANG TECH
公开号:WO2012173572A1
公开(公告)日:2012-12-20
The disclosure provides new methods for the oxidative Heck cross-coupling reaction with electron-rich alkenes such as substituted β-amidoacrylate and other related substituted enamides. Previously, functionalization of enamides under Heck conditions has been limited to those with unsubstituted vinyl groups. By tuning the reaction parameters that allow for the balance between stability and reactivity of the reactants, the oxidative Heck cross-coupling reaction now provides highly substituted enamides in good to excellent yields. (II) (III) (I)·
Stereoselective Synthesis of Highly Substituted Enamides by an Oxidative Heck Reaction
作者:Yu Liu、Dan Li、Cheol-Min Park
DOI:10.1002/anie.201101550
日期:2011.8.1
Functionalization of enamides under Heck conditions has been limited to those with unsubstituted vinyl groups. By tuning reaction parameters that allow for the balance between stability and reactivity of reactants, the oxidativeHeck cross‐coupling to produce highlysubstitutedenamides in good to excellent yields was achieved (see scheme).
Oxidative Amidation of Activated Alkenes Using Pd(OAc)2 as a Catalyst Precursor
作者:Xinzhu Liu、King Kuok Mimi Hii
DOI:10.1002/ejoc.201000384
日期:2010.9
A new "chloride-free" protocol was developed for oxidativeamidation reactions between cyclic and acyclic amides and carbamates with activated olefins, conducted under Pd/Cu catalysis, using air as a terminal oxidant. The presence of TsOH is important for catalytic activity. The scope of the reaction includes the addition of primary amides, carbamates, as well as cyclic oxazolidinone and pyrrolidinone