Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1989-03-20
1992-05-12
Springer, David B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548518, 548520, 548521, 548545, 548454, 548455, 548473, 548474, C07D40306, C07D20740, C07D207448, C07D207452
Patent
active
051129892
ABSTRACT:
A process for producing an unsaturated dicarboxylic acid imide compound of formula (I): ##STR1## wherein D represents a divalent organic group having at least one carbon/carbon double bond; R.sup.1 represents an n-valent organic group having at least one carbon atom; and n is an integer of 1 or above, which comprises reacting an unsaturated amide acid compound of formula (II): ##STR2## wherein D, R.sup.1, and n are as defined above, with an orthoester of formula (III): ##STR3## wherein R.sup.2 and R.sup.3, which may be the same or different, each represents a monovalent organic group having at least one carbon atom, to form an unsaturated dicarboxylic acid amide acid ester compound of formula (IV): ##STR4## wherein D, R.sup.1, R.sup.3, and n are as defined above, and then imidating the compound of formula (IV).
REFERENCES:
Chemical Abstracts, vol. 110, 1989, p. 674, Abstract No. 57503k, Columbus, Ohio, U.S.; and JP-A-63 227 568 (Matsushita Electric Works, Ltd.) Sep. 21, 1988.
Tetrahedron Letters, vol. 39, No. 9, 1983, pp. 1475-1485, Pergamon Press Ltd., GB.
Chemical Abstracts, vol. 92, 1980, p. 642, Abstract No. 110809c, Columbus, Ohio, U.S.; Ind. J. Chem., Sect. B 1979, 18b(3), 245-7.
Matsumura Masahiro
Saito Eiichiro
Yonemoto Tatsuo
Matsushita Electric & Works Ltd.
Springer David B.
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