Tetrahedron letters

Studies on the Fischer indole synthesis: Behaviour of cyclic hydrazones of tetrahydropyridazine and pyrazoline series in polyphosphoric acid.

F Sannicolò

Index: Sannicolo, Franco Tetrahedron Letters, 1984 , vol. 25, # 29 p. 3101 - 3102

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Citation Number: 10

Abstract

Abstract Heating 1, 3-diphenyl-1, 4, 5, 6-tetrahydropyridazine in PPA affords mainly 4- benzoyl-1, 2, 3, 4-tetrahydroquinoline and 2-anilinopropiophenone. In analogous conditions 1, 5-diphenyl-3-methyl-2-pyrazoline gives 2-styrylindole, benzidine and