期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 86, 期 22, 页码 16171-16176出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.1c01262
关键词
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资金
- National Natural Science Foundation of China [21871019]
- Beijing Municipal Education Committee Project [KZ202110005003, KM202110005006]
The electrochemical denitrogenation of aroylhydrazides using NHPI as a mediator for the first time results in efficient synthesis of fluorenones with intramolecular trapped acyl radicals, under conditions free of external oxidants and transition metals. The addition of a catalytic amount of 2,4,6-collidine as the base enhances the attractiveness of this method for the synthesis of fluorenones.
N-Hydroxyphthalimide (NHPI)-mediated electrochemical denitrogenation of aroylhydrazides is developed for the first time. The in situ generated acyl radicals could be intramolecularly trapped to give fluorenones with high efficiencies. This electrochemical method features external oxidant- and transition metal-free conditions. In addition, the use of the catalytic amount of 2,4,6-collidine as the base makes this method more attractive for the syntheses of fluorenones.
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