Tantalum catalysts or catalyst precursors

Details Tantalum catalysts or catalyst precursors Tantalum catalysts or catalyst precursors

1978-12-15

1980-04-08

Davis, C.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

260429R, 260440, 260446, 260447, C07C 321, C07F 900

Patent

active

041974190

ABSTRACT:
Tantalum catalysts or catalyst precursors of the formula ##STR1## wherein X is a halide, or alkoxide and L is an alkene (CH.sub.2 .dbd.CHR) having from 2 to 20 carbon atoms, react with 1-olefins to give catalysts of the formula ##STR2## wherein R.sup.2 is hydrogen or a C.sub.1 to C.sub.18 alkyl such as methyl, ethyl, or propyl. The catalysts or catalyst precursors selectively dimerize 1-olefins to the two possible disubstituted .alpha.-olefin dimers, the ratio of which depends on the nature of R.

REFERENCES:
patent: 3932477 (1976-01-01), Schrock
patent: 3933876 (1976-01-01), Tebbe
patent: 3988332 (1976-10-01), Schrock
patent: 3992472 (1976-11-01), Urry
patent: 4021429 (1977-05-01), Schrock
Lebinger et al, JACS, 97, 1596-1597 (1975).

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