Process for preparation of 9.alpha. -chloro-11.beta. formyloxypr

Details Process for preparation of 9.alpha. -chloro-11.beta. formyloxypr Process for preparation of 9.alpha. -chloro-11.beta. formyloxypr

1995-05-31

1997-09-23

Prior, Kimberly J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

540 61, 540 63, 540 69, 540 70, 540114, 540115, 540116, 540118, 540119, 552564, 552565, 552566, 552567, 552568, 552570, 552571, 552576, 552577, 552579, C07J 500, C07J 700, C07J 4300, C07J 3300

Patent

active

056706766

ABSTRACT:
Disclosed is a process for producing a compound of the formula: ##STR1## by reacting a compound of the formula: ##STR2## with: (1) a chlorinating reagent selected from an N-chloroimide or an N-chloroamide; (2) an anhydrous strong acid selected from orthophosphoric acid, alkylsulfonic acids, fluoroalkylsulfonic acids or arylsulfonic acids; and (3) anhydrous dimethylformamide; at a temperature within the range of about -78.degree. to about 0.degree. C.

REFERENCES:
patent: 4525303 (1985-06-01), Takagaki et al.
Translation of East German DD 268 954 A1 (1989).

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