The coupling of primary and secondary unactivated alkyl bromides with alkyl-Grignard reagents was performed in good yields under mild conditions by using a new catalytic system: consisting of cobalt chloride and tetramethylethylenediamine (CoCl2⋅2 LiI, 4 TMEDA). The reaction is very chemoselective since ketone, ester and nitrile functions are tolerated.
作者:Takuji Hatakeyama、Toru Hashimoto、Kalum K. A. D. S. Kathriarachchi、Takeshi Zenmyo、Hirofumi Seike、Masaharu Nakamura
DOI:10.1002/anie.201202797
日期:2012.8.27
Chemoselective Suzuki–Miyauracoupling of primary and secondary alkyl halides is realized by using an iron/Xantphos catalyst. Primary and secondary alkyl bromides undergo the reaction to give the coupling products in good yields. Application to the synthesis of long‐chain fatty acid derivatives is also described (see scheme).
Tuot; Guyard, Bulletin de la Societe Chimique de France, 1947, p. 1087,1092
作者:Tuot、Guyard
DOI:——
日期:——
SISKIN, MICHAEL;BRONS, GLEN;KATRITZKY, ALAN R.;BALASUBRAMANIAN, MARUDAI, ENERGY AND FUELS, 4,(1990) N, C. 475-482
作者:SISKIN, MICHAEL、BRONS, GLEN、KATRITZKY, ALAN R.、BALASUBRAMANIAN, MARUDAI
DOI:——
日期:——
A Highly Selective Arene Hydrogenation Catalyst that Operates in Ionic Liquid
作者:Clive J. Boxwell、Paul J. Dyson、David J. Ellis、Thomas Welton
DOI:10.1021/ja026361r
日期:2002.8.1
characterization of [Ru(eta(6)-p-cymene)(eta(2)-TRIPHOS)Cl][PF(6)] is described. The complex is a highly active, homogeneous arenehydrogenation catalyst that is selective toward the hydrogenation of aromatic rings in preference to alkenes, as demonstrated by the hydrogenation of allylbenzene to allylcyclohexane. The catalyst operates in both dichloromethane and ionic liquids and undergoes no decomposition