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3- Benzyl-5-phenylpyrazole

Diazo-3,5 - dimethylpyr azole 4-Diazo-3,5-diphenylpyrazole 4-Diazo-5(3)-ethoxy-3(5)-methylpyrazole 4-Diazo-3-benzyl-5-phenylpyrazole 4-Diazo-3-benzoyl-5-phenylpyrazole... [Pg.14]

Diazo-3-benzyl-5-phenylpyrazole (52) undergoes an intramolecular coupling between the diazo group and the methylene group.31... [Pg.15]

Photolysis of 4-diazo-3-benzoyl-5-phenylpyrazole (54) and of 3-diazo-5-benzyl-4-phenylpyrazole (55) in benzene solution led to the evolution of nitrogen and the formation in both cases of 3-benzoyl-4,5-diphenylpyrazole.31 Photolysis of the 4-diazo derivative (54) in... [Pg.15]

We can now review the use of imidates in place of amides. 2-Aminobenzo-nitrile and methyl JV-methylacetimidate [MeC(NMe)OMe] were boiled with phosphoric oxide in xylene, giving a moderate yield of 2,3-dimethyl-4-imino-3,4-dihydroquinazoline (see 1 and 103), which underwent the Dimroth arrangement to the 4-methylamino isomer when warmed with 1 N sodium hydroxide.130 The imidate (104), obtained by the action of diazomethane on 3-cyanomethyl-4-cyano-5-ethoxalylamino-l-phenylpyrazole (see 15), gave 4-amino-3-cyanomethyl-6-ethoxycarbonylpyrazolo[3,4-d]pyrimidine (see 16) in excellent yield when stirred with cold ethanolic ammonia.131 Similarly, 3-amino-4-cyanopyrazole, refluxed with benzyl thioacetimidate, gave a good yield of 4-amino-6-methylpyrazolo[3,4-d]pyrimidine other thio-imidates reacted similarly.132... [Pg.33]

A soln. of 5-methylamino-3-phenylpyrazole in methanol added to a stirred soln. of 40% formaldehyde and benzylamine in the same solvent, and stirred at room temp, for lOh - 5-benzyl-7-methyl-3-phenyl-4,5,6,7-tetrahydropyrazolo[3,4-a]pyrimidine. Y 90%. 5-Arylaminopyrazoles gave l,2,3,4-tetrahydropyrazolo[l,5-a]-s-triazines. F.e.s. J.N. Vishwakarma et al., J. Heterocyc. Chem. 25, 1387-90 (1988). [Pg.431]


See other pages where 3- Benzyl-5-phenylpyrazole is mentioned: [Pg.385]    [Pg.209]    [Pg.14]    [Pg.51]    [Pg.53]    [Pg.56]    [Pg.26]    [Pg.16]    [Pg.170]    [Pg.205]    [Pg.566]    [Pg.567]   
See also in sourсe #XX -- [ Pg.82 , Pg.165 ]

See also in sourсe #XX -- [ Pg.82 , Pg.165 ]

See also in sourсe #XX -- [ Pg.82 , Pg.165 ]

See also in sourсe #XX -- [ Pg.82 , Pg.165 ]




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