Reactions of palladium(<scp>II</scp>) with organic compounds. Part 5. Effect of reaction conditions upon products of oxidation of α-methylstyrene
作者:Richard O. C. Norman、C. Barry Thomas、Grenville Watson
DOI:10.1039/p29800001099
日期:——
distribution of varying the temperature, time of reaction, and reagent concentrations have been investigated in the oxidation of α-methylstyrene by palladium (II) acetate. Two reaction pathways have been identified. A π-allylic organopalladium compound decomposes slowly in a process catalysed by excess of the alkene to give 2-phenylprop-2-enyl acetate. The second reaction leads to competitive formation of enolic
A synthesis of conjugated dienes from aromatic, five-membered heterocycles
作者:Ernest Wenkert、Michael H. Leftin、Enrique L. Michelotti
DOI:10.1039/c39840000617
日期:——
Reaction of furan, thiophene, selenophene, and tellurophene as well as 2-methyl and 2,5-dimethyl derivatives of the first two heterocycles with phenyl-, methyl-, and n-butyl-magnesium bromides in the presence of ligated nickel dichloride are shown to yield buta-1,3-dienes mostly with retention of configuration.