71222-44-1Relevant academic research and scientific papers
Vicarious nucleophilic substitution of 1-benzyl-5-nitroimidazole, application to the synthesis of 6,7-dihydroimidazo[4,5-d][1,3]diazepin-8(3H)-one
Chen, Bang-Chi,Chao, Sam T.,Sundeen, Joseph E.,Tellew, John,Ahmad, Saleem
, p. 1595 - 1596 (2007/10/03)
Reaction of 1-benzyl-5-nitroimidazole with carbanion generated from chloroform and potassium tert-butoxide afforded 1-benzyl-4-dichloromethyl-5-nitroimidazole in 72% yield. This vicarious nucleophilic substitution reaction was successfully applied to the synthesis of 6,7-dihydroimidazo[4,5-d][1,3]diazepin-8(3H)-one, an important intermediate in the synthesis of natural and biologically active compounds.
2-Amino-1-(5-amino-1H-imidazol-4-yl)ethanone and method of preparation
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, (2008/06/13)
2-Amino-1-(5-amino-1H-imidazol-4-yl)ethanone, 6,7-dihydroimidazo[4,5-d][1,3]diazepin-8(3H)-one and acid-addition salts thereof are disclosed. 2-Amino-1-(5-amino-1H-imidazol-4-yl)ethanone and its acid-addition salts are prepared by catalytically reducing an acid-addition salt of 2-amino-1-[5-amino-1-(protected)-1H-imidazol-4-yl]ethanone. 6,7-Dihydroimidazo[4,5-d][1,3]-diazepin-8(3H)-one and its acid-addition salts are prepared by reacting an acid-addition salt of 2-amino-1-(5-amino-1H-imidazol-4-yl)ethanone with a compound able to contribute a formyl group. The later product may subsequently be converted into (R)-3-(2-deoxy-β-D-erythro-pentofuranosyl)-3,6,7,8-tetrahydroimidazo[4,5-d][1,3]diazepin-8-ol. Furanose derivatives of 6,7-dihydroimidazo[4,5-d][1,3]diazepine are also disclosed and their methods of preparation. Lastly, a method for resolving an isomer mixture of 3-(2-deoxy-β-D-erythro-pentafuranosyl)-3,6,7,8-tetrahydroimidazo[4,5-d][1,3]diazepin-8-ol compounds is related.
