Substitution nucleophile d'acetates de cyclenols allyliques fonctionnels par des organometalliques en presence de sels cuivreux. Application a une synthese rapide de la (±)mitsugashiw alactone
作者:Hassen Amri、Monique Rambaud、Jean Villieras
DOI:10.1016/s0040-4020(01)81522-2
日期:1990.1
Substitution of functional allylic cycloalkenol acetates by Grignardreagents (primary , secondary, tertiary-alkyl, vinyl, aryl) in the presence of a catalytic amount (2.5% equivalent) of cuprous iodide at low temperature, gives high yields of various functional α-substituted cycloalkenes . The reaction can be applied to lithium enolates of esters and need no catalyst, but may be performed with HMPA
Mechanochemical Oxidative Heck Coupling of Activated and Unactivated Alkenes: A Chemo‐, Regio‐ and Stereo‐Controlled Synthesis of Alkenylbenzenes
作者:Jingbo Yu、Haowen Shou、Wangyang Yu、Haodong Chen、Weike Su
DOI:10.1002/adsc.201900965
日期:2019.11.19
an efficient mechanochemical strategy for chemo‐, regio‐ and stereo‐selective oxidative Heckcoupling of readily accessible arylboron reagents/heteroaromatics with unactivated cyclic and acyclic olefins. Mono‐ and bis‐arylation were achieved without the need of ligands, directing groups or prefunctionalized alkenes, and the reaction chemo‐selectivity could be controlled by tuning of the oxidative system
Palladium-Catalyzed Cross-Coupling of Baylis−Hillman Acetate Adducts with Organosilanes
作者:George W. Kabalka、Gang Dong、Bollu Venkataiah、Chunlan Chen
DOI:10.1021/jo051177k
日期:2005.11.1
A cross-coupling reaction between acetates of Baylis-Hillman adducts and organosilanes is described. A nonconventional solvent poly(ethylene glycol) (PEG) is used as the reaction medium.
AMRI, HASSEN;RAMBAUD, MONIQUE;VILLIERAS, JEAN, TETRAHEDRON, 46,(1990) N0, C. 3535-3546