Tetrahedron

Photochemistry of 5-aryl-2 (3H)-furanones.: A new route to the synthesis of chromones

R Martinez-Utrilla, MA Miranda

Index: Martinez-Utrilla, R.; Miranda, M. A. Tetrahedron, 1981 , vol. 37, p. 2111 - 2114

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Citation Number: 9

Abstract

The photochemistry of 5-phenyl-, 5-(2', 5'-dimethoxyphenyl)-, 5-(2'-acetoxy-5'- methoxyphenyl)-and 5-(2', 5'-diacetoxyphenyl)-2 (3H)-furanone (1a-d) has been investigated. Compound 1a yields phenyl vinyl ketone as expected. Similarly, 1b affords the corresponding aryl vinyl ketone but, in this case, photodimerization also occurs. Irradiation of the two o-acetoxyaryl furanones 1c and 1d gives rise to the formation of chromones as the ...

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