title: Preparation of Optically Active cis-Cyclopropane Carboxylates: Cyclopropanation of α-Silyl Stryenes with Aryldiazoacetates and Desilylation of the Resulting Silyl Cyclopropanes.
abstract: Optically active cis-cyclopropane carboxylates are prepared via the Rh2(S-PTAD)4-catalyzed cyclopropanation of α-silyl styrenes with aryl diazoacetates followed by desilylation of the resulting silyl cyclopropane carboxylates. The conjugation of the aryl ring with C═C bond and π stacking are proposed for the stereoselectivity of cyclopropanation, and configuration inversion is observed with the desilylation process.
authors.affiliation: School of Chemistry & Chemical Engineering, Key Laboratory of Energy Sources & Engineering, and Ningxia Engineering and Research Center for Natural Medicines, Ningxia University , Yinchuan 750021, China.|Department of Chemistry, Lanzhou University , Lanzhou 730000, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Su
authors.affiliation: School of Chemistry & Chemical Engineering, Key Laboratory of Energy Sources & Engineering, and Ningxia Engineering and Research Center for Natural Medicines, Ningxia University , Yinchuan 750021, China.
authors.forename: Qing-Fang
authors.initials: QF
authors.lastname: Li
authors.affiliation: Department of Chemistry, Lanzhou University , Lanzhou 730000, China.|School of Chemistry & Chemical Engineering, Shaanxi Normal University , Xi'an 710119, China.
authors.forename: Yu-Ming
authors.initials: YM
authors.lastname: Zhao
authors.affiliation: School of Chemistry & Chemical Engineering, Key Laboratory of Energy Sources & Engineering, and Ningxia Engineering and Research Center for Natural Medicines, Ningxia University , Yinchuan 750021, China.
authors.forename: Peiming
authors.initials: P
authors.lastname: Gu