期刊
NATURE COMMUNICATIONS
卷 8, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41467-017-01262-4
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资金
- National Natural Science Foundation of China [21322203, 21272238, 21521002]
- Alexander von Humboldt Foundation
Selectivity control of varied C-H bonds in a complex molecule is a long-standing goal and still a great challenge in C-H activation field. Most often, such selectivity is achieved by the innate reactivity of different C-H bonds. In this context, the classic Mannich reaction of acetophenone derivatives and imines is ascribed to the more reactive C(sp(3))-H bonds a to the carbonyl, with the much less reactive aromatic C(sp(2))-H bonds remaining intact. Herein we report an aromatic C(sp(2))-H addition of ketones to imines enabled by manganese catalysis, which totally reverses the innate reactivity of C-H bonds a to the carbonyl and those on the aromatic ring. Diverse products of ortho-C-H aminoalkylated ketones, cyclized exo-olefinic isoindolines, and three-component methylated isoindolines can be successfully accessed under mild reaction conditions, which significantly expands the synthetic utilities of ketones as simple bulk chemicals.
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