Journal of the American Chemical Society

The reaction of diazomethane with 2-phenylazo-1, 3-diketones

PB Russell

Index: Russell Journal of the American Chemical Society, 1953 , vol. 75, p. 5315,5319

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Citation Number: 6

Abstract

Diazomethane reacts with 2-phenylazo-1, 3-diketones in ether containing a little methanol to give mainly simple methylene derivatives. On treatment of these epoxides with acidic reagents 3-acyl-1-phenylpyrazoles are formed, the methylene derivative from a- phenylazoacetylacetone giving the known 3-acetyl-5-methyl-1-phenylpyrazole. The mode of formation of the various products is discussed and conclusions regarding the structure of ...