Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1994-07-01
1995-11-28
Denta, Bernard
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546146, C07D21726
Patent
active
054709792
ABSTRACT:
The invention is an improved process for producing an optically active compound of formula IV: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.4 are herein described. The improved process to produce a compound of formula IV comprises:
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American Cyanamid Company
Denta Bernard
Szaltkowski T. S.
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