Thermal unimolecular decomposition of bicyclopropyl and deuterated analogs: infrared photoactivation as a diagnostic tool in mechanistic organic chemistry
Solvent attack in Grignard reagent formation from bromocyclopropane and 1-bromohexane in diethyl ether
作者:John F. Garst、Ferenc Ungvary、Rajnish Batlaw、Kathryn Easton Lawrence
DOI:10.1021/ja00014a034
日期:1991.7
In the reaction of magnesium with bromocyclopropane in diethyl ether at reflux, intermediate cyclopropyl radicals attack the solvent, giving cyclopropane (20-30 mol/100 mol of bromocyclopropane consumed) and solvent-derived products. In contrast, the similar reaction of 1-bromohexane gives no more than 0.5 mol of hexane from solvent attack by hexyl radicals. These data are consistent with calculations
Regioselective Simmons–Smith-type cyclopropanations of polyalkenes enabled by transition metal catalysis
作者:Jacob Werth、Christopher Uyeda
DOI:10.1039/c7sc04861k
日期:——
A cobalt catalyst imparts a high degree of regioselectivity in the reductive cyclopropanation of polyalkenes.
一种钴催化剂在多烯的还原环丙烷化反应中赋予高度的位置选择性。
Site and Stereoselectivity of the Cyclopropanation of Unsymmetrically Substituted 1,3-Dienes by the Simmonssmith Reaction.<sup>+</sup>
作者:Mário César Guerreiro、Ulf Schuchardt
DOI:10.1080/00397919608002620
日期:1996.5
trans-vinylcyclopropane; an allylic hydroxyl group increases the reactivity and directs the cyclopropanation to the adjacent double bond. +Part of the results was presented at the XVIth InternationalConference on OrganometallicChemistry, Brighton, July 1994, abstract P228.