Thermolysis of the 3,5-hexadienyl acrylates (a) proceeds via the transition state E in which the connecting chain adopts a boatlike conformation due to a preference for maintaining ester overlap to afford the products b with good diastereoselectivity.
3,5-
己二烯基
丙烯酸酯(a)的热解通过过渡态E进行,在该过渡态中,由于优选保持酯重叠以使产物b具有良好的非对映选择性,连接链呈舟状构象。