A synthesis of optically active 4S-methylhexanal, 1-bromo-3S-methylheptane, and 1-bromo-3S-methylundecane, which are key synthons for several methyl-branched insect pheromones, that is based on chemically selective transformations of 6-tosyloxy- and 6-iodoisopropyl-4R-methylhexanoates that are available from L-(-)-menthol was proposed.
提出了一种合成光学活性4S-甲基
己醛、1-
溴-3S-甲基
庚烷和1-
溴-3S-甲基
十一烷的方法,这些化合物是几种甲基支链昆虫信息素的重要合成材料。该方法基于从L-
(-)-薄荷醇获得的6-托苯基氧基和6-
碘异丙基-4R-甲基
己酸酯的
化学选择性转化。