Aspects of the intramolecular Diels-Alder reactions of some 1,3,9-trienic amides, amines, and esters. An approach to the pentacyclic skeleton of the yohimboid alkaloids
Regio-and stereo-specific reduction of conjugated and non-conjugated triple bonds by activated zinc powder
作者:Marc H. P. J. Aerssens、Lambert Brandsma
DOI:10.1039/c39840000735
日期:——
Regio-as well as stereo-specificreductions of a wide variety of acetylenic derivatives have been carried out in absolute ethanol with zincpowderactivated with 1,2-dibromoethane, and with zincpowderactivated successively with dibromoethane and copper(I) bromide, the first reagent less powerful and more selective than the second one.
First intramolecular benzyne diels-alder reaction with an acyclic diene. Unusual effect of diene geometry on the course of the reaction
作者:Keith R. Buszek
DOI:10.1016/0040-4039(95)01980-v
日期:1995.12
The first intramolecular benzyne Diets-Alder reaction with an acyclic diene is reported. The course of the reaction is dependent on the diene geometry. Trans dienes afford [4+2] cycloadducts; cis dienes apparently give [2+2 ] cycloadducts followed by further rearrangement, a mechanistic course which is supported by deuterium labeling experiments.
Seven-membered Heterocyclic Systems. I. The Synthesis of 2,3,6,7-Tetrahydroöxepine
作者:Jerrold Meinwald、Hitosi Nozaki
DOI:10.1021/ja01545a053
日期:1958.6
Total synthesis of enantiomers of (3Z,6Z)-cis-9,10-epoxy 1,3,6-henicosatriene — the pheromonal component of Diacrisia obliqua
作者:J.S. Yadav、Madabhushi Y. Valli、A.R. Prasad
DOI:10.1016/s0040-4020(98)00389-5
日期:1998.6
Synthesis of enantiomers of (3Z,6Z)-cis-9,10-epoxy 1,3,6-henicosatriene, the pheromonal component of Diacrisia obliqua was achieved through alkylative epoxide rearrangement and stereoselective Wittig olefination reactions as the key steps. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
cis-1,3,5-Hexatriene and Chloro- and Methyl-1,3,5-hexatrienes