PROCESS FOR PREPARING MIXTURE OF TAUTOMERS DERIVATIVE OF4,4A,6,6,8,8A,9-OCTAHYDRO-1H/AND 2H/-PYRAZOLO/3,4-G/-QUINOLINE

摘要

A 1-substituted-3-permissibly-substituted-6-oxodecahydroquinoline is converted to the corresponding 7-formyl derivative and then, upon treatment with hydrazine, may be cyclized to a tautomeric mixture of 5-substituted-7-permissibly-substituted-4, 4a, 5, 6, 7, 8, 8a, 9-octahydro-1H (and 2H)-pyrazolo [3,4-g] quinolines.