Highly general stereo-, regio-, and chemo-selective synthesis of terminal and internal conjugated enynes by the Pd-catalysed reaction of alkynylzinc reagents with alkenyl halides
作者:Anthony O. King、Nobuhisa Okukado、Ei-ichi Negishi
DOI:10.1039/c39770000683
日期:——
The reaction of an alkynylzinc chloride, readily obtainable from the corresponding alkynyl-lithium and anhydrous zinc chloride, with an alkenyl iodide or bromide in the presence of a catalytic amount of a Pd–phosphine complex provides the corresponding terminal or internal enyne in high yield, the stereospecificity of the reaction being 97%.
COMMERCON A.; NORMANT J. F.; VILLIERAS J., TETRAHEDRON, 1980, 36, NO 9, 1215-1221
作者:COMMERCON A.、 NORMANT J. F.、 VILLIERAS J.
DOI:——
日期:——
Substitution des halogéno-1 alcynes-1 par les dérivés organométalliques du cuivre. accès à une nouvelle classe de synthons: application à
作者:A. Commerçon、J.F. Normant、J. Villieras
DOI:10.1016/0040-4020(80)87021-9
日期:1980.1
1-Bromo- and 1-iodo-1-alkynes are alkylated by organocopper(I) compounds. Alkenylcopper(I) derivatives undergo substitution with retention of configuration leading to conjugated and functional enynes, from which conjugated dienes can be obtained.