Allylic sulfides were synthesized from allylic alcohols 1 using S, S'-bis(1-phenyl-1H-tetrazol-5-yl) dithiocarbonate (2) by means of a single-step reaction. The allylic sulfides were coupled with a Grignard reagent or carbanion in the presence of a catalytic amount of copper(I) bromide or palladium(0).
Regio-controlled Prenylation and Geranylation of 3-Furylmethylmagnesium Bromide. Selective Syntheses of 3-Substituted Furanoid and 2-Substituted 3-Methylfuranoid Terpenes
作者:Shuki Araki、Yasuo Butsugan
DOI:10.1246/bcsj.56.1446
日期:1983.5
main products. When the reactions were carried out in the presence of a catalytic amount of copper(I) iodide, normal coupling occurred and 3-substituted furans, perillene and dendrolasin, were formed in good yields. The related naturally occurring 3-substitutedthiophene, 3-(4-methyl-3-pentenyl)thiophene, was also synthesized from 3-thienylmethylmagnesium bromide and prenyl diethy phosphate.
Syntheses of all-trans acyclic isoprenoid pheromone components
作者:Peter Baeckström、Lanna Li
DOI:10.1016/s0040-4020(01)86580-7
日期:1991.8
involves the Claisen rearrangement of allyl vinylethers formed from allylic alcohols and the dimethyl acetal of methyl isopropenyl ketone, followed by LiAlH4 reduction of the α,β-unsaturated ketone formed by rearrangement. The α,β-unsaturated ketone was also transformed to the 2-methyl-1-propenyl group by using a one-pot deoxygenation reaction for the synthesis of (E)-β-farnesene, (E)-β-springene and
Single-step preparation of allylic sulfides having 1-phenyltetrazole-5-thio group from allylic alcohols using ,′-BIS(1-phenyl-1-tetrazol-5-YL) dithiocarbonate and reactions involving the allylic sulfides
The reaction of allylicalcohols and ,′-bis(1-phenyl-1-tetrazol-5-yl) dithiocarbonate () gave allylic sulfides having 1-phenyltetrazole-5-thio group in a single step. Furthermore, these allylic sulfides could be applied to carbon-carbon bond and carbon-sulfur bond formations by using Grignard reagents or carbanions in the presence of a catalytic amount of copper(I)bromide or palladium (0), respectively