Tetrahedron letters

Photochemistry of 1, 3-dimethyluracil. A novel photochemical ring-opening leading to an enamine

M Arys, TB Christensen, J Eriksen

Index: Arys, Maria; Christensen, Torben B.; Eriksen, Jens Tetrahedron Letters, 1984 , vol. 25, # 14 p. 1521 - 1524

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Citation Number: 7

Abstract

Besides known reduction and solvent addition products, the photolysis of 1,3-dimethyluracil in methanol resulted in formation of the enamine 2-methoxycarbonyl-N-methyl-3-methylaminopropenamide (5) a novel ring-opening reaction. A mechanism for the formation of 5 is suggested and its structure was confirmed by an independent synthesis. ... M. Arys and J. Eriksen, to be published. ... In ppm relative to TMS at 0 ppm. ... In some cases an enhanced yield of 5 was noted upon ...

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