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Process for the preparation of pyridine dicarboxylate derivatives
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Document Number
US Patent 5892050
Issued Date
April 6, 1999
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Inventors
Doehner, Jr.; Robert Francis
(Windsor, NJ)
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Abstract
There is provided a single vessel process for the preparation of a pyridine dicarboxylate compound of formula I ##STR1## via the sequential condensation of an alkyl vinyl ether with Vilsmeier reagent, oxalacetate and an ammonia source.
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Drawing from US Patent 5892050
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process
preparation
pyridine
dicarboxylate
derivatives
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Description:
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Clever 0%
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Efficient 0%
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Innovative 0%
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Practical 0%
Simple 0%
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Number of Claims:
15
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Owner
American Cyanamid Company
(Madison, NJ)
Filed:
January 28, 1998
Published
April 6, 1999
Application Number
Filed
US Classification
546/318
546/319
Int'l Classification
C07B 43/00 (20060101) C07D 213/00 (20060101) C07D 213/80 (20060101)
Examiner
Fan; Jane
Attorney/Law Firm
Hogan, Jr.; John W.
USPTO Field of Search
546/318 546/319
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