Synthesis of Cyclohexanones through a Catalytic Cationic Cyclization of Alkynols or Enynes
作者:Pedro Alonso、Raquel Fontaneda、Pilar Pardo、Francisco J. Fañanás、Félix Rodríguez
DOI:10.1021/acs.orglett.8b00437
日期:2018.3.16
A novel procedure for the synthesis of cyclohexanones from alkynol or enyne derivatives through a cationic cyclization has been developed. The key points to obtain the six-membered ring derivatives are the use of starting materials containing a terminal alkyne, the use of tetrafluoroboric acid as a promoter of the cationic cyclization, and the appropriate selection of 1,1,1,3,3,3-hexafluoropropan-2-ol
已经开发了通过阳离子环化从炔醇或烯炔衍生物合成环己酮的新方法。的关键点,以获得六元环衍生物是使用开始含有末端炔的材料,使用四氟硼酸作为阳离子环化的启动子,和1,1,1,3,3-适当的选择, 3-三氟丙烷-2-醇(HFIP)作为溶剂。该策略可以扩展到几种萜烯衍生的多烯的仿生阳离子环化反应。