期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 49, 页码 15351-15355出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201609658
关键词
arenes; C-H activation; reaction mechanisms; rhodium; small ring compounds
资金
- NSFC [21402190, 21525208, 21272231]
- Dalian Institute of Chemical Physics
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB17020300]
Functionalizable directing groups (DGs) are highly desirable in C-H activation chemistry. The nitrone DGs are explored in rhodium(III)-catalyzed C-H activation of arenes and couplings with cyclopropenones. N-tert-butyl nitrones bearing a small ortho substituent coupled to afford 1-naphthols, where the nitrone acts as a traceless DG. In contrast, coupling of N-tert-butyl nitrones bearing a bulky ortho group follows a C-H acylation/[3+2] dipolar addition pathway to give bicyclics. The coupling of N-arylnitrones follows the same acylation/[3+2] addition process but delivers different bicyclics.
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