Isomerization of allenes to alkynes with an alkaline-earth metal

Details Isomerization of allenes to alkynes with an alkaline-earth metal Isomerization of allenes to alkynes with an alkaline-earth metal

1998-07-07

1999-11-23

Griffin, Walter D.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

Triple-bond product

585534, 585664, 585665, 585666, 585667, 585668, 585669, 585670, C07C 200, C07C 202, C07C 523

Patent

active

059903686

ABSTRACT:
Providing an isomerization process which can isomerize allenes to alkynes less expensively and stably is an assignment to be solved by the present invention and given thereto. The present invention is an isomerization process including the step of reacting an allene-lype hydrocarbon compound (R.sub.1 R.sub.2 C.dbd.C.dbd.CR.sub.3 R.sub.4) in the presence of alkaline-earth metal hydride working as an isomerization catalyst, thereby isomerizing the allene-type hydrocarbon compound to an alkyne-type hydrocarbon compound (R.sub.1 C.ident.C--CR.sub.2 R.sub.3 R.sub.4).

REFERENCES:
patent: 2594706 (1952-04-01), Allan
patent: 3235618 (1966-02-01), Hastings et al.
patent: 3369054 (1968-02-01), Zelinski et al.
patent: 3671605 (1972-06-01), Smith, Jr.
patent: 4036904 (1977-07-01), Strope
patent: 5062998 (1991-11-01), Herman et al.

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