An expeditious procedure for the synthesis of purines from aminoimidazolecarbaldehydes
作者:Francisco Perandones、José L. Soto
DOI:10.1002/jhet.5570340514
日期:1997.9
5-amino-1-methylimidazole-4-car-baldehydes 3 with nitriles, in the presence of dry hydrogen chloride afforded to the formation of purine derivatives. This constitutes a facile and versatile one-pot synthesis of purines. The use of formamide instead of nitriles leads to the respective purines without substituents on the pyrimidine ring, 2d and 4e,f.
Synthesis of imidazo[4,5-<i>b</i>]pyridines from aminoimidazolecarbaldehydes
作者:Francisco Perandones、Jose L. Soto
DOI:10.1002/jhet.5570340118
日期:1997.1
4-Amino-1,2-dimethylimidazole-5-carbaldehyde (1) and 5-amino-1-methylimidazole-4-carbaldehydes 3 were prepared by reduction of the corresponding aminoimidazolecarbonitriles 2 and 4. Condensation of 1 and 3 with carbonitriles, ketones and polyfunctional carbonyl compounds bearing the-CH2CO-moiety afforded to the imidazo[4,5-b]pyridine derivatives.
通过还原相应的氨基咪唑腈2和4来制备4-氨基-1,2-二甲基咪唑-5-甲醛(1)和5-氨基-1-甲基咪唑-4-甲醛3提供给咪唑并[4,5- b ]吡啶衍生物的带有-CH 2 CO-部分的多官能羰基化合物。