Method for the isomerization of cis-alkenyl compounds

Details Method for the isomerization of cis-alkenyl compounds Method for the isomerization of cis-alkenyl compounds

1994-07-19

1996-07-02

Achutamurthy, Ponnathapura

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By skeletal isomerization

554125, 560205, 562598, 5689095, 570256, C07C 527

Patent

active

055324215

ABSTRACT:
An object of the present invention is to provide a method for the preparation of geometrical isomers which are important as constituents of synthetic pheromones, synthetic perfumes, terpenes and the like (i.e., a method for the isomerization of cis-alkenyl compounds to their trans-isomers). In this method, the above-described object is accomplished by reacting a cis-alkenyl compound in the presence of nitric acid used as the sole catalyst.

REFERENCES:
patent: 2310225 (1943-02-01), Eipper
patent: 4814460 (1989-03-01), Ikeda et al.
Chemical Abstracts, vol. 86, No. 23, Jun. 6, 1977, Ichkawa et al, "Transcitral from cis-citral", p. 577.
Chemical Abstracts, vol. 72, No. 10, Mar. 9, 1970, Muromtseva et al, "Infrared spectroscopic study of processes occuring in rubbers . . . ", p. 58.
Chemical Abstracts, vol. 99, No. 15, Oct. 10, 1983, Zhou et al, "Use of nitric acid-sodium preparation of insect pheromones . . . ", p. 594.
Praxis Der Naturwissenschaften, Chemie, vol. 1981, No. 2, Feb. 15, 1981, pp. 61-62, Wolf, "Trans-isomerisierung der cis . . . ".

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