Process for preparing 3-enol ethers of...

Details Process for preparing 3-enol ethers of... Process for preparing 3-enol ethers of...

C - Chemistry, Metallurgy

07

J

260/15, 195/22,

C07J 5/00 (2006.01) C07J 7/00 (2006.01) C07J 71/00 (2006.01)

Patent

CA 1067066

Abstract of the Disclosure 3-enol ethers of 11.beta.-hydroxy-.DELTA.4-pregnene-3-ones are prepared by reacting triethylorthoacetate with an 11.beta.-hydroxy- .DELTA.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.1,4,6-pregnatrien -11.beta.,17.alpha.,21-triol-3,20-dione.

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