Decomposition of diazoketones in organic sulfides and sulfoxides: Cyclopropane formation from diazoketones via sulfonium ylides
作者:J. Quintana、M. Torres、F. Serratosa
DOI:10.1016/0040-4020(73)80146-2
日期:1973.1
and sulfoxonium ylides as the primary reaction products, the final products isolated depending upon the relative nucleophilicity of the sulfides compared to that of the corresponding ylides, and on the stability of the ylides. The mechanism, scope and limitations of a new method of cyclopropane formation from diazoketones are discussed. Some circumstantial evidence supporting a concerted process for Wolff
Selective transformation of α,α-dibromomethyl ketones into α-monosulfenylated ketones
作者:Marc Boeykens、Norbert De Kimpe
DOI:10.1016/s0040-4020(01)89544-2
日期:1994.1
When α,α-dibromomethyl ketones are treated with sodium thiolates only the α-monosulfenylated ketones are formed. Evidence is put forward that the reaction mechanism proceeds by an initial nucleophilicsubstitution of one bromo atom and reduction by singleelectrontransfer (SET) - hydrogen atom abstraction of the second bromo atom.