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BUTLER, RN,COLLERAN, DM,OSHEA, DF,CUNNINGHAM, D,MCARDLE, P,GILLAN, AM
1993
November
Journal Of The Chemical Society-Perkin Transactions 1
NEW ENTRY TO THE IMIDAZO[4,5-C]PYRAZOLE SYSTEM THROUGH PHOTOCHEMICALLY INDUCED SEQUENTIAL TRANSFORMATIONS OF SUBSTITUTED PYRROLO[2,3-D]-1,2,3-TRIAZOLES - X-RAY CRYSTAL-STRUCTURE OF A SUBSTITUTED 1,3A,6,6A-TETRAHYDRO-IMIDAZO[4,5-C]PYRAZOLE
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Optional Fields
2757
2759
Upon UV irradiation, substituted pyrrolo[2,3-d]-1,2,3-triazoles were transformed by a new route to imidazo[4,5-c]pyrazoles. The mechanism of the reaction is discussed in terms of a likely 1,2,3,5-tetrazocine intermediate. An X-ray crystal structure of dimethyl 1,6-di(p-bromophenyl)-3,5-diphenyl-1,3a,6,6a-tetrahydroimidazo[4,5-c] pyrazole-3a,6a-dicarboxylate 4b is reported.
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