Journal
SYNLETT
Volume 29, Issue 9, Pages 1223-1228Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/S-0036-1591956
Keywords
rhodium catalysis; benzoxepines; enynes; cyclization; 1,4-rhodium shift
Categories
Funding
- 973 Program [2015CB856600]
- NSFC [21572251, 21572253, 21772063]
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
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An efficient access to cis-hydrobenzo[b]oxepine frameworks has been established through rhodium(l)-catalyzed cyclization of cyclo-hexadienone-tethered o-tolyl-substituted alkynes (1,6-enynes). The cascade process involves regioselective alpha-arylrhodation of the alkyne, 1,4-rhodium migration, and conjugate addition to cyclohexadienone.
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