Methods of preparing 4-cyano-4 (substituted indazole) cyclohexan

Details Methods of preparing 4-cyano-4 (substituted indazole) cyclohexan Methods of preparing 4-cyano-4 (substituted indazole) cyclohexan

1998-09-15

1999-12-21

Higel, Floyd D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

514403, C07D23156, A61K 31415

Patent

active

060051183

ABSTRACT:
An improved process for preparing a compound of Formula (I): ##STR1## comprising: (a) treating a compound of Formula (Ia): ##STR2## with an alcohol comprising a compound of Formula (Ib-A) and an acid comprising a compound of Formula (Ib-B): ##STR3## wherein R.sub.a is selected from the group consisting essentially of hydrogen; (C.sub.1 -C.sub.6) alkyl; phenyl and (C.sub.1 -C.sub.3) alkyl-phenyl wherein said phenyl groups are optionally substituted by one or two substituents selected from the group consisting essentially of --(C.sub.1 -C.sub.4) alkyl; --O(C.sub.1 -C.sub.3) alkyl; Br; and Cl; and

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