FRIEDEL–CRAFTS REACTION OF 3,6-DIHYDRO-4-METHYL-2<i>H</i>-PYRAN WITH PHENOLS. A CONVENIENT SYNTHESIS OF A KEY INTERMEDIATE OF ALPHA-TOCOPHEROL
作者:Yoshiji Fujita、Manzo Shiono、Katsushi Ejiri、Kazumi Saita
DOI:10.1246/cl.1985.1399
日期:1985.9.5
The Friedel–Crafts reaction of 3,6-dihydro-4-methyl-2H-pyran with 2,3,5-trimethylhydroquinone afforded 3,4-dihydro-6-hydroxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-ethanol in good yield.
3,6-二氢-4-甲基-2H-吡喃与2,3,5-三甲基氢醌的Friedel-Crafts反应得到3,4-二氢-6-羟基-2,5,7,8-四甲基-2H- 1-苯并吡喃-2-乙醇收率良好。