Synthesis imidazoles

Azirine, trans-2-methyl-3-phenyl-racemization, 7, 33, 34 1-Azirine, 2-phenyl-reactions, 7, 69 with carbon disulfide, S, 153 1-Azirine, 3-vinyl-rearrangements, 7, 67 Azirines, 7, 47-93 cycloaddition reactions, 7, 26 fused ring derivatives, 7, 47-93 imidazole synthesis from, 5, 487-488 photochemical addition reactions to carbonyl compounds, 7, 56 photolysis, 5, 780, 7, 28 protonated... 

Imida2o[4,3-d]imidazole, tetrahydro-synthesis, 6, 993 Imidazo[l, 2-n]imidazoles synthesis, 6, 990, 992... 

Pyrazolo[3,4-d][l,2]diazepines synthesis, 7, 597 Pyrazolop, 4- 6][ 1,4]diazepines synthesis, 5, 272 Pyrazolo[l, 4]diazepinones as anticonvulsant, 1, 170 Pyrazolo[2,3-e]diazepinones synthesis, 5, 272 1 H-Pyrazolo[l,5-6]imidazoles synthesis, 6, 992 Pyrazolo[2,3-a]imidazoles biological activity, 6, 1024 Pyrazolo[2,3-c]imidazoles reactions, 6, 1041 synthesis, 6, 1047 Pyrazolo[2,3-isoquinolines synthesis, 5, 273 Pyrazolonaphthyri dines synthesis, 5, 339 Pyrazolone, diazophotolysis, 5, 252 Pyrazolone, 4,4-dihalo-rearrangements, 5, 250 Pyrazolone, ethoxy-hydrazinolysis, 5, 253 Pyrazolone, 4-halo-... 

Triazepine, 5-benzyl-3,7-diaryl-4,6-dihydro-imidazole synthesis from, 5, 497... 

BREDERECK Imidazole synthesis Synthesis o( imidazoles Irom (ormamide (acetamide) and a-diketones, a-ketols, a-aminoketones, a-oziminoketones... 

WEIDENHAQEN Invdazotosynthesis Imidazole synthesis from a-ketols, formaldehyde and ammonia. 

The best results in the imidazole synthesis were obtained by microwave-assisted reaction of an eightfold excess of the polymer-supported isonitrile suspended in 1,2-dimethoxyethane (DME) with the appropriate amines. Cleavage with 50% trifluoroacetic acid in dichloromethane afforded the desired heterocyclic scaffolds in moderate yields. 

Scheme 4 Model reaction of the imidazole synthesis via the modified Radziszewski method to afford tetrasubstituted imidazoles [16]...

Lantos and colleagues reported a different imidazole synthesis via hetero-Cope rearrangement. Oximes 116 reacted with benzenecarboxidoyl chloride affording adducts 117 that readily underwent a [3,3]-sigmatropic rearrangement at high temperatures (equation 35) to substituted imidazoles 118. 

Imidazole synthesis. A new synthesis of 4,5-diarylimidazoles (2) involves reaction of catalytic amounts of aqueous elhanolic K.CN with N-methyl-C-aryl nitrones (1), prepared by condensation of aryl aldehydes with N-methyl-hydroxylamine. The reaction involves an intermediate cyanoimine (n). 

Imidazo[4,5-d]imidazoles synthesis, 6, 994 Imidazo[2,1 -ajisoquinolines synthesis, 5, 161... 

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