Unified Protocol for Cobalt-Catalyzed Oxidative Assembly of Two Aryl Metal Reagents Using Oxygen as an Oxidant
作者:Lian-Yan Liao、Kun-Ming Liu、Xin-Fang Duan
DOI:10.1021/acs.joc.5b01787
日期:2015.10.16
reaction of two aryl metal reagents is described. An equivalent amount of two arylGrignard or lithium reagents, after mediation by an equivalent amount of simple ClTi(OEt)3, was facilely assembled under the catalysis of 1 mol % of CoCl2/10 mol % of DMPU using oxygen. The cross-couplings between various aryl metal reagents, especially between two structurally similar arylGrignardreagents, proceeded smoothly
Directed Functionalization of Halophenyl-2-oxazolines with TMPMgCl·LiCl
作者:João H. C. Batista、Fernanda M. dos Santos、Leandro A. Bozzini、Ricardo Vessecchi、Alfredo R. M. Oliveira、Giuliano C. Clososki
DOI:10.1002/ejoc.201403255
日期:2015.2
TMPMgCl·LiCl to give an organomagnesium reagent, which was then treated with various electrophiles. The metalation step takes place under mild conditions, and this process allows for the isolation of the desired products in good yields. No isomeric or other benzyne-derived products were detected. The influence of the halogen substituents on the acidity of the aromatic hydrogen atoms was evaluated by using density