Copper catalyzed process for producing 4-substituted azetidinone

Details Copper catalyzed process for producing 4-substituted azetidinone Copper catalyzed process for producing 4-substituted azetidinone

1995-07-05

1998-09-15

Berch, Mark L.

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

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

C07D20509

Patent

active

058080554

ABSTRACT:
A process for producing a 4-substituted azetidinone derivative represented ##STR1## (wherein OR is a protected hydroxy group, Y is an alkyl group, an alkoxy group, a silyloxy group, a carbamoyloxy group, an amino group, a substituted or unsubstituted aromatic group or a substituted or unsubstituted heterocyclic group, and n is an integer of 0 or 1, provided that n does not represent 0 when Y is an alkoxy group, silyloxy group, carbamoyloxy group or amino group), characterized in that a 2-azetidinone ##STR2## (wherein OR is as defined above, and X is an alkyl group or a substituted or unsubstituted aromatic group) is reacted with thiocarboxylic acid
(wherein Y and n are respectively as defined above) in an organic solvent in the presence of copper compounds.

REFERENCES:
patent: 5026844 (1991-06-01), Ishiguro
Ray, Indian J. Chem 13, 1086, Oct. 1975.

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