Process for preparing 16-methylene steroids

Details Process for preparing 16-methylene steroids Process for preparing 16-methylene steroids

1982-02-17

1983-11-22

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26023955R, 2603973, 2603974, 26039745, C07J 700

Patent

active

044168217

ABSTRACT:
A process is disclosed for the production of 17-keto-16-methylene steroids (III) from the corresponding readily available 17-keto steroid (I) via a novel intermediate (II).

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patent: 3704253 (1972-11-01), Stein
Gazetter Chim. Ital. 91, 672, (1961). P. de Ruggieri et al. "Steroidi 16-metel-androstani" (See pp. 562 and 678).
Tetrahedron Letters 39, 3753 (1978), Y. Ueno et al. "Deacylative Condensation I."
Chemistry Letters 47 (1979) Y. Ueno et al.
Neumann et al., Jour. Amer. Chem. Soc. vol. 77, (1955), p. 5676.

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