Process for the preparation of tropane alkaloids

Details Process for the preparation of tropane alkaloids Process for the preparation of tropane alkaloids

C - Chemistry, Metallurgy

07

D

260/270.5

C07D 451/06 (2006.01)

Patent

CA 1048504

ABSTRACT OF THE DISCLOSURE: N-acyldehydronortropinones having the general formula: Image wherein R represents hydrogen, lower alkyl, lower alkoxy, phenyl or phenyloxy, and R' and R" are the same or different and each re- presents hydrogen, halogen or lower alkyl, are prepared by react- ing an N-acylpyrrole of the general formula: Image wherein R has the aforesaid meaning, with an .alpha.,.alpha.'-halogenoketone of the general formula: Image wherein R' and R" have the aforesaid meanings and X represents a halogen atom, in the presence of a reducing agent selected from the group consisting of iron carbonyl and zinc-copper couple. N- acyldehydronortropinones are intermediate compounds used for pre- paring dehydrotropine, tropine and tropanols.

210940

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