Journal
ORGANIC LETTERS
Volume 17, Issue 18, Pages 4628-4631Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b02366
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Funding
- Hundred Talent Program of Chinese Academy of Sciences (CAS)
- Natural Science Foundation of Jiangsu [BK20151235]
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A new approach was developed for Pd(II)-catalyzed aromatic coupling of oxabenzonorbornadienes with triarylphosphines as both ligands and aryl donors. Diverse functional groups including halo- (F-, Cl-, and Br-), CF3-, and furyl groups are well tolerated. For unsymmetrical triarylphosphines, the migration ability of aryls is consistent with the electronic property of substituents and maintains the order EDG-Ar > H-Ar > EWD-Ar (EDG means electron-donating group, EWG means electron-withdrawing group). A preliminary mechanistic study was also disclosed.
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