NHC/Nickel(II)‐Catalyzed [3+2] Cross‐Dimerization of Unactivated Olefins and Methylenecyclopropanes
作者:Jian‐Qiang Huang、Chun‐Yu Ho
DOI:10.1002/anie.201914542
日期:2020.3.23
typical hydroalkenylation reactivity was observed for the first time by using a [NHC-Ni(allyl)]BArF catalyst (NHC=N-heterocyclic carbene). Results show that the C-C cleavage of 1 did not involve a Ni0 oxidative addition, which was crucial in former systems. Thus the method reported here emerges as a complementary method for attaining highly chemo- and regioselectivesynthesis of methylenecyclopentanes
Chloropalladation of 7-methylene-1-phenylbicyclo[4.1.0]-heptane: An intermediate containing carbonium ion character
作者:William A. Donaldson
DOI:10.1016/0022-328x(84)80300-9
日期:1984.7
The chloropalladation of 7-methylene-1-phenylbicyclo[4.1.0]heptane in methanol, provides evidence for the intermediacy of an organopalladium species with carboniumion character in the cyclopropane ring opening.
Carboxylate Assistance for Catalyzed Hydroarylations of Methylenecyclopropanes
作者:Marvin Schinkel、Jan Wallbaum、Sergei I. Kozhushkov、Ilan Marek、Lutz Ackermann
DOI:10.1021/ol402037f
日期:2013.9.6
Carboxylate assistance enabled efficient and chemoselective ruthenium(II)-catalyzed hydroarylations and hydroalkenylations of highly strained methylenecyclopropanes via C-H bond activation occurring with ring conservation of the cyclopropane moieties.