Indium-mediated regioselective Markovnikov allylation of unactivated terminal alkynes
作者:Brindaban C. Ranu、Adinath Majee
DOI:10.1039/a702241g
日期:——
Allylation of unactivated terminal alkynes by a simple treatment with
allyl bromide and indium metal in THF at room temperature produces
1,4-dienes via regioselective Marknovnikov addition.
[reaction: see text] Secondary alpha-lithiosulfinyl carbanions react either intermolecularly, after transmetalation into an organocopper derivative in an S(N)2-type process with zinc carbenoid, or intramolecularly via higher-order zincate to give, through a tandem zinc homologation-beta-elimination reaction the corresponding alkenes. alpha,alpha-Disubstituted alkenes are only formed fromtertiary alpha-lithiosulfinyl
One-pot and regioselective synthesis of alkenes and deuterioalkenes from .alpha.-chlorocarboxylic acid chlorides via a tandem addition of two different nucleophiles (Grignard reagents, hydride or deuteride) and further lithiation
作者:Jose Barluenga、Miguel Yus、Jose M. Concellon、Pablo Bernad
DOI:10.1021/jo00152a042
日期:1983.2
BARLUENGA, J.;YUS, M.;CONCELLON, M.;BERNAD, P., J. ORG. CHEM., 1983, 48, N 4, 609-611
作者:BARLUENGA, J.、YUS, M.、CONCELLON, M.、BERNAD, P.
DOI:——
日期:——
Bubnov,Yu.N. et al., Organometallics in Chemical Synthesis, 1970, vol. 1, p. 37 - 43