Nickel-Catalyzed Reductive Cross-Coupling of Unactivated Alkyl Halides
作者:Xiaolong Yu、Tao Yang、Shulin Wang、Hailiang Xu、Hegui Gong
DOI:10.1021/ol200617f
日期:2011.4.15
Ni-catalyzed reductive approach to the cross-coupling of two unactivated alkyl halides has been successfully developed. The reaction works efficiently for primary and secondary halides, with at least one being bromide. The mildreaction conditions allow for excellent functional group tolerance and provide the C(sp3)−C(sp3) coupling products in moderate to excellent yields.
A liquid ester composition includes aryl polyol esters: (a) a first diester of the formula ArC(O)(OCH2CH2)2O(0)CAr, (b) a triester of the formula ArC(O)(OCH2CH(OC(O) ArCH2O(O)CAr, and (c) a second diester of the formula ArC(O)(OCH(R)CH(R)O)n(0)CAr, wherein (d) Ar represents a phenyl radical, and R represents -CH3 or H wherein only 1 of the groups R is a H atom in the triester, and n is 1 to 3, wherein, the weight ratio of the first diester to the triester is 1:1 to 20:1 and wherein the weight ratio of the first diester to the second diester is 1:1 to 3.5:1.