期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 19, 期 21, 页码 4733-4742出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ob00606a
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资金
- Ministry of Science and Technology of the Republic of China (Taiwan) [MOST 109-2113-M-037-014-MY3]
The one-pot tandem annulation mediated by Bi(OTf)3 provides a highly effective method for synthesizing polyoxygenated homotriptycenes under easy-operational conditions. The protocol involves intermolecular and intramolecular Friedel-Crafts type procedures, leading to moderate to good yields in a short reaction time.
Bi(OTf)(3) (bismuth triflate)-mediated one-pot tandem annulation of oxygenated 1-aryl isochroman-3-ones with oxygenated arenes provides polyoxygenated homotriptycenes in moderate to good yields in MeNO2 at reflux (101 degrees C) for 10 h under an air atmosphere and easy-operational conditions via intermolecular and intramolecular Friedel-Crafts type procedures. A plausible mechanism is proposed and discussed. This protocol provides a highly effective ring-closure via three carbon-carbon (C-C) bond formations.
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