Method for preparing 17 .alpha.-ester-21-halo pregnanes

Details Method for preparing 17 .alpha.-ester-21-halo pregnanes Method for preparing 17 .alpha.-ester-21-halo pregnanes

1976-03-29

1978-09-12

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26023955R, C07J 500

Patent

active

041136802

ABSTRACT:
One-step method for preparing 17 .alpha.-ester-21-halo pregnanes by reacting 17 .alpha., 21-cyclic orthoesters of 17 .alpha., 21-dihydroxy pregnanes with a halo compound in the presence of an organic polar solvent, simultaneously resulting in halogenation at 21-position and esterification at 17 .alpha.-position of said 17 .alpha., 21-cyclic orthoesters, the reaction proceeding in a short period of time without, or substantially without, any unfavorable side-reactions.

REFERENCES:
patent: 3826366 (1974-08-01), Cimarusti
patent: 3992422 (1976-11-01), Green

Affiliated with

Also associated with

Rating

Method for preparing 17 .alpha.-ester-21-halo pregnanes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing 17 .alpha.-ester-21-halo pregnanes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing 17 .alpha.-ester-21-halo pregnanes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2383371