Isomerization of vinylidene olefins

Details Isomerization of vinylidene olefins Isomerization of vinylidene olefins

1987-01-08

1987-09-29

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By double-bond-shift isomerization

585671, C07C 525, C07C 527

Patent

active

046970401

ABSTRACT:
A process for isomerization of vinylidene olefins at least in part to tri-substituted ethylene compound which process comprises contacting an olefinic feedstock, containing mostly vinyl olefins and minor amounts of vinylidene olefins, with a catalyst comprising LZ-Y52 zeolite so as to isomerize the vinylidene olefins to the tri-substituted ethylene compounds without losing substantial amounts of the vinyl olefins to side products. A process is preferably applied to a feedstock such as octene-1 containing 2-ethyl-hexane-1 and the 2-ethyl-hexene-1 is isomerized to 3-methyl-heptene-2 and 3-methyl-heptene-3 while retaining all or most all of the octene-1.

REFERENCES:
patent: 3150202 (1964-09-01), Holt et al.
patent: 3236909 (1966-02-01), Winnick
patent: 3697616 (1972-10-01), McDonough et al.
patent: 3940452 (1976-02-01), Strassberger
patent: 4576807 (1986-03-01), Loechelt, II
patent: 4587374 (1986-05-01), Peters

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