Rhodium-catalyzed carbometalation of ynamides with organoboron reagents
摘要:
In the presence of catalytic [Rh(cod)(MeCN)(2)]BF4, ynamides undergo carbometalation with boronic acids, arylboronic esters, and triarylboroxines. These reactions enable the regio- and stereocontrolled synthesis of multisubstituted enamides. (c) 2010 Elsevier Ltd. All rights reserved.
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).
Room temperature palladium-catalyzed hydroarylation of ynamides in water
作者:Antonella Di Nicola、Vincenzo Marsicano、Antonio Arcadi、Véronique Michelet
DOI:10.1016/j.tetlet.2020.151725
日期:2020.4
alkylynamides. The reaction conditions were optimized and the presence of a base was necessary for the efficient preparation of enamides at roomtemperature. Conversely, α,β-disubstituted or β,β’-disubstituted enamides were isolated as major single stereoisomers and at roomtemperature in water in the absence of any additive by using PCy3 or P(o-Tol)3, respectively. The best activity was observed for oxazolidin-2-one