New method for the ring enlargement of cyclic ketones
作者:D. Labar、J.L. Laboureur、A. Krief
DOI:10.1016/s0040-4039(00)87000-8
日期:1982.1
A simple two step procedure which allows thering enlargement of cyclicketones is disclosed which takes advantage of the high nucleophilicity of α-selenoalkyllithiums towards carbonyl compounds and of a novel transposition reaction which occurs on the resulting β-hydroxyselenides.
Selenium stablized anions. Conversion of β-hydroxy selenides into olefins
作者:Hans J. Reich、Flora Chow
DOI:10.1039/c39750000790
日期:——
Sulphonylation of β-hydroxyselenides, prepared by addition of organometallic compounds to carbonyl compounds, results in reductive elimination to give olefin under unusally mild conditions.
Ring expansion of cyclenones: an unusual regioselectivity
作者:A. Krief、J. L. Laboureur
DOI:10.1039/c39860000702
日期:——
Various cyclenones have been homologated by a two-step sequence involving a reaction with α-selenoalkyl-lithium compounds and further reaction of the resulting β-hydroxyselenides with thallium(I) ethoxide in chloroform; an unusually high propensity of the alkyl groups to migrate in place of the vinyl moiety has been observed.