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Communication | Special issue | Vol 42, No. 1, 1996, pp.117-120
Published online, 1st January, 1970
DOI: 10.3987/COM-95-S36
Intramolecular Photoreaction of Thiobarbiturates with an Alkenyl Group in Their N-Side Chain. Regioselective Synthesis of Fused Pyrimidine Derivatives through Photocycloaddition of Mono- and Dithiobarbiturates1

Haruko Takechi and Minoru Machida

*Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan

Abstract

Upon irradiation, thiobarbiturates (1 and 2) with an alkenyl group in their N-side chain give bi- and tri-cyclic fused pyrimidine derivatives through regioselective [2+2] photocycloaddition.