期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 22, 页码 6093-6097出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201700096
关键词
4bH-azaborepins; boriranes; C-C bond formation; photo-/thermal transformations; regioselectivity
资金
- Natural Science and Engineering Research Council of Canada [RGPIN1193993-2013]
- National Natural Science Foundation of China [21571017]
- Canadian Government
Asymmetric N, C-chelate organoboron compounds bearing two different aryl groups at the boron center undergo photoisomerization reactions that involve exclusively the less bulky aryl group, generating various strongly colored dark isomers. These species thermally isomerize to 4bH-azaborepin molecules by direct hydrogen atom transfer from a borirane cycle to the pyridyl moiety and ring expansion. Mechanistic insight into these highly regioselective transformations was obtained from kinetic data and through computational studies.
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