Journal
CHEMICAL & PHARMACEUTICAL BULLETIN
Volume 66, Issue 9, Pages 843-846Publisher
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.c18-00460
Keywords
Ullmann C-O coupling reaction; D-alpha-tocopherol; 2,2-dialkyl chromane
Funding
- Research Fund of Tokyo University of Science
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The complete synthesis of D-alpha-tocopherol was achieved using our developed-Ullmann C-O coupling reaction as a key reaction. The synthesis of the core structure of D-alpha-tocopherol, which is a chiral chromane, has never been reported using intramolecular Ullmann C-O coupling reactions owing to the low reactivity of electron-rich iodoarenes with tertiary alcohols. Because the developed intramolecular C-O coupling reactions prefer electron-rich iodoarenes with tertiary alcohols, we successfully synthesized the chiral chromane core and achieved the total synthesis of D-alpha-tocopherol.
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