Process for preparing 3-enol ethers of 11.beta.-hydroxy-.DELTA..

Details Process for preparing 3-enol ethers of 11.beta.-hydroxy-.DELTA.. Process for preparing 3-enol ethers of 11.beta.-hydroxy-.DELTA..

1975-02-18

1976-05-11

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26023955D, C07J 7100

Patent

active

039563499

ABSTRACT:
3-enol ethers of 11.beta.-hydroxy-.DELTA..sup.4 -pregnene-3-ones are prepared by reacting triethylorthoacetate with an 11.beta.-hydroxy-.DELTA..sup.4 -pregnene-3-one in a solvent which is at least 40% by weight or more ethanol and 60% by weight or less of a compatible oxygenated hydrocarbon liquid in the presence of an acid catalyst. This reaction forms a basis of a process for forming 6-halo-derivatives, particularly 6-chloro-.DELTA..sup.1,4,6 -pregnatrien -11.beta.,17.alpha.,21-triol-3,20-dione.

REFERENCES:
"J.A.C.S.," Vol. 81 (1959), article by Villotti et al., p. 4569.

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