The reaction of 2-bromomethyl-1,4-dibromo-2-butene (1) with various aldehydes and ketones in tetrahydrofuran containing zinc powder under reflux gave the corresponding isoprenylated alcohols 3a-o in one step in good yields. The synthesis of ipsdienol (3e) and ipsenol (3c) was achieved by the present method starting from 3-methyl-2-butenal (2e) and isovaleraldehyde (2c).
在
四氢呋喃中含
锌粉的回流条件下,2-
溴甲基-
1,4-二溴-2-丁烯(1)与各种醛和酮的反应,可以一步合成相应的
异戊二烯化醇3a-o,并且产率良好。通过本方法,从
3-甲基-2-丁烯醛(2e)和
异戊醛(2c)出发,实现了ipsdienol(3e)和ipsenol(3c)的合成。