title: Unusual ambiphilic carbenoid equivalent in amide cyclopropanation.
abstract: [reaction: see text] The titanium-methylene complexes derived from the TiCl(4)-Mg-CH(2)Cl(2) system serve as a novel class of ambiphilic carbenoid equivalents, which not only efficiently effect cyclopropanations of a variety amides but also exhibit high chemoselectivity.
authors.affiliation: Department of Chemistry, National Chung-Hsing University, Taichung, Taiwan, Republic of China.
authors.forename: Kuo-Wei
authors.initials: KW
authors.lastname: Lin
authors.forename: Shiuan
authors.initials: S
authors.lastname: Yan
authors.forename: I-Lin
authors.initials: IL
authors.lastname: Hsieh
authors.forename: Tu-Hsin
authors.initials: TH
authors.lastname: Yan