Cyclobutene derivatives from addition of α-halogeno electrophilic olefins to ynamines
作者:J.Ø. Madsen、S.-O. Lawesson
DOI:10.1016/s0040-4020(01)97530-1
日期:1974.1
cycloaddition and subsequent allylic isomerization is formulated on the basis of stereochemical and kinetic data. The halogen substituents of the cyclobutene derivatives are stereospecifically displaced by the OH or the OEt groups in solvolytic reactions, with retention of configuration. Methylenecyclobutene derivatives are obtained from the 3-methylcyclobutenes by elimination of hydrogen halide with
Elimination reaction over solid supports under microwave irradiation: Synthesis of functionalized alkenes
作者:Aicha Saoudi、Jack Hamelin、Hadj Benhaoua
DOI:10.1016/s0040-4039(98)00690-x
日期:1998.6
Treatment of 1,2-dibromocompounds with KF supported on alumina, or bentonite/Et3N undermicrowaveirradiation leads to an elimination reaction which produces functionalized alkenes in fair yields.
在微波辐射下,用负载在氧化铝上的KF或膨润土/ Et 3 N处理1,2-二溴化合物会导致消除反应,从而以合理的收率生产官能化的烯烃。
LERMAN, ORI;HERMOLIN, JOSHUA
作者:LERMAN, ORI、HERMOLIN, JOSHUA
DOI:——
日期:——
Preparation of α-Haloacrylate Derivatives via Dimethyl Sulfoxide-Mediated Selective Dehydrohalogenation
selective dehydrohalogenation to form alpha-haloacrylate analogues. A variety of alpha-halo Michael acceptors were prepared in dimethyl sulfoxide under mild, base-free conditions, including the preparation of alpha-bromoacrolein and alpha-chloro- and bromoacrylonitriles. Synthesis of these molecules has been reported in the literature to be difficult. Among all the existing dehydrohalogenation procedures