Stereoselective reduction of conjugated homopropargylic alcohols 1 followed by an elimination reaction, allows an efficient approach to stereodefined (E,E,E)-chlorotrienes. The interest of these chlorotrienes was illustrated by a stereocontrolled synthesis of navenone B and allE conjugated polyenes (trienes, tetraenes and hexaenes).
立体选择性还原共轭均炔
丙醇1,然后进行消除反应,可以实现立体定义的(E,E,E)-
氯三烯的有效方法。这些碳
三烯的兴趣通过navenone B和所有E共轭多烯(
三烯,四烯和己烯)的立体控制合成得到了说明。