Copper(I)-Catalyzed Carbometalation of Nonfunctionalized Cyclopropenes Using Organozinc and Grignard Reagents
作者:Kohei Endo、Takeo Nakano、Yutaka Ukaji
DOI:10.1055/s-0034-1379959
日期:——
A highly efficient method was developed for the copper(I)-catalyzed carbometalation of various nonfunctionalized and functionalized cyclopropenes. Electrophilic trapping of the cyclopropylmetal intermediates gave multifunctionalized cyclopropanes.
Three-Electron S<sub>N</sub>2 Reactions of Arylcyclopropane Cation Radicals. 2. Steric and Electronic Effects of Substitution<sup>1</sup>
作者:J. P. Dinnocenzo、H. Zuilhof、D. R. Lieberman、T. R. Simpson、M. W. McKechney
DOI:10.1021/ja963112s
日期:1997.2.1
studies, time-resolved laser flash photolysis, kinetic isotope effects, and quantum chemical calculations. The reactions were found to proceed stereospecifically with inversion of configuration, with high regioselectivity for nucleophilic attack at the more substituted carbon atom, and with very small stericeffects. Electroniceffects on the nucleophilic substitution regiochemistry and the rate constants
Maercker,A.; Theysohn,W., Justus Liebigs Annalen der Chemie, 1972, vol. 759, p. 132 - 157
作者:Maercker,A.、Theysohn,W.
DOI:——
日期:——
Reactions of diphenylcarbene with alkenes, alkynes, and alkenynes
作者:William J. Baron、Michael E. Henrick、Maitland. Jones
DOI:10.1021/ja00800a022
日期:1973.9
Enantioselective Palladium-Catalyzed Carbozincation of Cyclopropenes
作者:Katja Krämer、Paul Leong、Mark Lautens
DOI:10.1021/ol1029904
日期:2011.2.18
A highly enantioselective palladium-catalyzed carbozincation of cyclopropenes has been developed. The intermediate cyclopropylzinc species, after transmetalation with copper, were trapped with various electrophiles. This one-pot procedure furnished functionalizied cyclopropenes with excellent diastereo- and enantioselectivity.