Process for preparing .DELTA..sup.9(11) and/or .DELTA..sup.16 -u

Details Process for preparing .DELTA..sup.9(11) and/or .DELTA..sup.16 -u Process for preparing .DELTA..sup.9(11) and/or .DELTA..sup.16 -u

1980-07-18

1981-09-22

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07J 500

Patent

active

042909635

ABSTRACT:
A process for preparing a .DELTA..sup.9(11) - and/or .DELTA..sup.16 -unsaturated steroid comprises heating the corresponding steroid of the pregnane series substituted by 9.alpha.-chloro- and/or 16.alpha.-chloro- or 17.alpha.-acyloxy, in an inert, aprotic high-boiling solvent at 180.degree.-350.degree. C.

REFERENCES:
patent: 4061661 (1977-12-01), Kerb et al.
patent: 4064148 (1977-12-01), Barton et al.
Breslow et al., "JACS" (1977) vol. 99 pp. 905-915 relied on.

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