Process for producing 17-acetals of...

Details Process for producing 17-acetals of... Process for producing 17-acetals of...

C - Chemistry, Metallurgy

07

J

260/22, 260/52

C07J 1/00 (2006.01) C07J 21/00 (2006.01)

Patent

CA 1067485

ABSTRACT OF THE DISCLOSURE 17-Acetals of 3-alkoxyestra-2,5(10)-dien-17-ones are prepared by reacting 17-acetals of 3-alkoxyestra-1,3,5(10)- trien-17-ones with sodium or potassium, liquid ammonia and a tertiary alcohol in the presence of a solvent selected from the group consisting of tetrahydrofuran, dioxane and tetrahydropyran. Yield and selectivity of this reaction are improved by using the 17-acetals of the 3-alkoxyestra-1,3,5(10)-trien-17-ones, sodium or potassium, liquid ammonia and the solvent in such proportions that the 17-acetals of the 3-alkoxyestra- 1,3,5(10)-trien-17-ones are substantially dissolved in the reaction system and that two liquid phases are formed, the lower phase being colored.

276421

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