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Cycloaddition reaction of pyrimidine-dienols with dienophiles. A new approach to quinazolines

✍ Scribed by Shigeo Senda; Tetsuji Asao; Isao Sugiyama; Kosaku Hirota

Book ID: 104237254
Publisher: Elsevier Science
Year: 1980
Tongue: French
Weight: 124 KB
Volume: 21
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)85547-7

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✦ Synopsis

A new synthetic approach to quinazolines bearing a carboxy group is described. Reaction of 5-carbonyl substituted 1,3,6-trimethyluracils (I) with dimethyl acetylenedicarboxylate or electrondeficient olefines affords quinazoline derivatives (IU-VI) via pyrimidine(Z)-dienols (II) formed by base-catalyzed isomerixion.

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