Novel tocopherol compounds I. Bromination of α-tocopherol — reaction mechanism and synthetic applications
作者:T. Rosenau、W.D. Habicher
DOI:10.1016/0040-4020(95)00421-4
日期:1995.7
including the occurrence of an ortho-quinone methide, not as a radical-chain reaction, contrary to earlier reports. The ortho-quinone methide intermediate is also produced by oxidation of a-tocopherol with silver oxide and can be trapped in the presence of electron-rich dienophiles in a hetero-Diels-Alder reaction to form novel dichromanes in high yields.