The chemoselective reduction of nitro compounds: scope of the electrochemical method
作者:JM Chapuzet、R Labrecque、M Lavoie、E Martel、J Lessard
DOI:10.1051/jcp/1996930601
日期:——
The selective electrohydrogenation of nitro aliphatic and nitro aromatic functional groups in molecules containing other groups that are easy to hydrogenate (activated double bond, carbon-iodine bond, nitrile,) has been sucessfully carried out in slightly acidic (pH = 3) or neutral (pH = 5-6) methanol-water solutions at Devarda copper and Raney cobalt electrodes. The electrochemical synthesis of a quinolone 15 and a quinoxaline 18 is also reported. Preliminary results on the preparative electroreduction of 5-nitroindole 21 on Hg in aqueous methanol with HBr as supporting electrolyte are presented and dicussed for the first time.
在含有其他易氢化基团(活化双键、碳-碘键、氰基)的分子中,对硝基脂肪族和硝基芳香族官能团的选择性电氢化已在微酸性(pH = 3)或中性(pH = 5-6)的甲醇-水溶液中,在德尔瓦铜和拉尼钴电极上成功进行。本文还报道了喹诺酮15和喹喉18的电化学合成。首次介绍了在含氢溴酸的甲醇水溶液中,在汞上进行5-硝基吲哚21的制备电还原的初步结果,并进行了讨论。