T. Nishimura, C. Yamazaki, T. Ueno
Jun 1, 1972
Citations
0
Influential Citations
1
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
A pigment formed in the diacetyl reaction of 1 -benzyl-1 -methylguanidine was isolated as reddish purple prisms. The reduced pigment was colorless and rapidly converted back to the original pigment on exposure to the air. On the basis of IR, NMR, and mass spectral evidence, the structures of the pigment and the reduced one were established to be 2-(N-benzyl-N-methylamino)-4-methyl-5-(1-oxo-1,2-dihydro-2-naphthylidenemethyl)-imidazole and 2-(N-benzyl-N-methylamino)-4-methyl-5-(1-hydroxy-2-naphthylmethyl)imidazole, respectively.