As part of a search for biologically active analogues of vitamin E, fluorine derivatives of tocotrienol and related compounds were synthesized by the ring-closure of trifluoroprenols with trimethylhydroquinone. For this purpose, the trifluoroprenols were synthesized by the Wittitg-Horner reaction of trifluoroacetone or its prenyl homologues with triethylphosphonoacetate followed by reduction of the trifluoromethylated acrylic ester derivatives. Although 4, 4, 4-trifluoroprenol itself did not react with the hydroquinone, 7, 7, 7-trifluorodiprenol and higher prenols gave 6-chromanols with a trifluofomethylated side-chan.
在寻找具有
生物活性的
维生素 E 类似物的过程中,通过三
氟丙烯醇与三甲基
对苯二酚的环闭反应合成了
生育三烯酚和相关化合物的
氟衍
生物。为此,三
氟丙烯醇是通过三
氟丙酮或其炔基同系物与
三乙基膦酰基
乙酸酯的 Wittitg-Horner 反应合成的,然后还原三
氟甲基化
丙烯酸酯衍
生物。虽然 4,4,4-三
氟丙烯醇本身不与
对苯二酚反应,但 7,7,7-三
氟二
丙烯醇和更高的前烯醇会产生具有三
氟甲基化侧链的 6-
铬醇。