Process for preparing olefinic aldehydes

Details Process for preparing olefinic aldehydes Process for preparing olefinic aldehydes

1983-08-12

1985-09-10

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568436, 568437, 568490, 570182, 570186, 570189, 570193, 570216, 570237, C07C 4528

Patent

active

045408262

ABSTRACT:
A process for the preparation of olefinic aldehydes and intermediates is disclosed. The condensation of an .alpha.,.omega.-dihalide with a metal acetylide gives an acetylenic halide which can be reduced to give an olefinic halide, then oxidized to give the desired olefinic aldehyde or the acetylenic halide can be oxidized first to give an acetylenic aldehyde and then reduced to give the desired olefinic aldehyde.

REFERENCES:
patent: 3917711 (1975-11-01), Roelofs et al.
patent: 4212830 (1980-07-01), Wiesner
Mori, The Total Synthesis of Natural Products, vol. 4, (1981), 1, 8, 9, 10 and 11.
Rossi, Synthesis, (1977), 817, 823, 824 and 825.
Henrick, Tetrahedron, vol. 33, (1977), 1845-1851.

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