Syntheses of gem-dinitro heterocyclic compounds, their ring-opening reactions and transformations into indoles, indazoles and benzoxazinones
作者:Jan Bergman、Solveig Bergman、Thomas Brimert
DOI:10.1016/s0040-4020(99)00570-0
日期:1999.8
The synthesis of some novel 3,3,5,7-tetranitrooxindoles and 4,4-dinitropyrazol-5-ones and their behaviour towards various nucleophiles and electrophiles are reported. Reactions with hydroxide ions or secondary amines produced salts of e.g. 2-amino-3,5-dinitrophenyldinitromethane, which subsequently could be further transformed into indazoles, indoles or benzoxazinones depending upon substrate and conditions
报道了一些新颖的3,3,5,7-四硝基氧吲哚和4,4-二硝基吡唑-5-酮的合成及其对各种亲核试剂和亲电试剂的行为。与氢氧离子或仲胺的反应产生例如2-氨基-3,5-二硝基苯基二硝基甲烷的盐,其随后可以根据所使用的底物和条件进一步转化为吲唑,吲哚或苯并恶嗪酮。讨论了机制。