Tetrahedron

Synthesis of imidazo [4.5-c] pyridine and imidazo [4, 5-d][1, 2] diazepine systems and their ribonucleosides

A Frankowski

Index: Frankowski Tetrahedron, 1986 ,  vol. 42,  # 5  p. 1511 - 1528

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Citation Number: 5

Abstract

UV Irradiation of the fused N-iminopyridinium ylides 11 and 16, prepared from imidazo [4, 5- c] pyridine (9), resulted in the regiospecific formation of the 4-aminoimidazo [4, 5-c] pyridine derivatives 13 and 17 respectively. The fused N-iminopyridinium ylide 27, which can be obtained from 1-benzyl-1, 3-dihydroimidazo [4, 5-c] pyridin-2-one (24), undergoes photoinduced tranaformation to the isomoric aminopyridine derivatives 28 and 29. In ...