In the presence of a catalytic amount of Au(I) and Ag(I) salts, the 14-membered furanophane II with an allene function located across the ring undergoes both a transannular [4+3] and [4+2] cycloaddition. Secondary rearrangement products containing a tricyclic ring system were isolated when the catalyst was PtCl2.
在催化量的Au(I)和Ag(I)盐的存在下,跨环具有烯丙基功能的14元
呋喃芬尼II会经历跨环的[4 + 3]和[4 + 2]环加成。当催化剂为PtCl 2时,分离出含有
三环系统的二次重排产物。