A Practical Synthesis of Polyhalomethyllithium-Carbonyl Adducts
作者:Hiroaki Taguchi、Hisashi Yamamoto、Hitosi Nozaki
DOI:10.1246/bcsj.50.1588
日期:1977.6
of a mixture of polyhalomethane and a carbonylcompound with a hindered lithium amide. The kinetically controlled, selective lithiation of the halide enables us to avoid a troublesome procedure involving preformed lithiumcarbenoid. The halide components examined are dichloromethane, dibromomethane, diiodomethane, chloroform, and bromoform, while the carbonyl ones are ubiquitous ketones and nonanal
A preparation of bromoolefins from carbonyl compounds
作者:David R. Williams、K. Nishitani、W. Bennett、S.Y. Sit
DOI:10.1016/s0040-4039(01)82009-8
日期:1981.1
A variety of 1-bromoalkenes are prepared by addition of dibromomethyllithium to ketones and aldehydes followed by reductive elimination with zinc-aceticacid. The product E/Z ratios were determined, and halogen-lithium exchange with t-butyllithium was examined.