p-hydroquinone compounds 4 containing the C5 trans allylic sulfone moiety has been developed by the direct Friedel-Crafts allylation of the protected dihydroquinone 2 with 4-chloro-2-methyl-1-phenylsulfonyl-2-butene (7a) or 4-hydroxy-2-methyl-1-phenylsulfonyl-2-butene (7b). Expeditious total syntheses of coenzyme Q-10 and vitamin K2(20) have been demonstrated from these valuable key compounds 4a and 4b
通过将被保护的二
氢醌2与4-
氯-2-甲基-1-苯基磺酰基-
2-丁烯直接进行弗里德-克拉夫茨烯丙基化反应,已经开发出一种有效的合成方法,用于合成包含C5反式烯丙基砜部分的被保护的对
氢醌化合物4。 (7a)或
4-羟基-2-甲基-1-苯基磺酰基-
2-丁烯(7b)。从这些有价值的关键化合物4a和4b证明了
辅酶Q-10和
维生素K2(20)的快速合成。