Liebigs Annalen der Chemie

Photochemical Reactions of 1??Aryl??2 (1H)??pyrimidinones in Alcohol

T Nishio

Index: Nishio, Takehiko Liebigs Annalen der Chemie, 1992 , # 1 p. 71 - 74

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Abstract

Abstract Irradiation of the 2 (1H)-pyrimidinones 1 in alcohols such as 2-propanol and ethanol afforded the 1-(alkoxycarbonylamino)-3-(arylimino)-1-propenes 4a–c, h and 2- (alkoxycarbonylamino)-4-(arylimino)-2-pentenes 4d–g. These photoproducts are formed by trapping the isocyanate intermediates 2, generated initially by the Norrish-type I cleavage of the ArN—CO bond of the 2 (1H)-pyrimidinones, with the alcohol.

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