Indium(III) chloride–catalyzed facile synthesis of oxabicyclo[3.3.1]nonenes via (3,5)-oxonium-ene cyclization
作者:Kulathooran Singaram、Dhamodaran Marimuthu
DOI:10.1080/00397911.2016.1196703
日期:2016.8.2
ABSTRACT A practical and convenient method for the synthesis of oxabicyclo[3.3.1]nonenes has been developed using InCl3 (20 mol%) under mild conditions from aldehydes and R-(+)-limonene. Corresponding oxabicyclic compounds were obtained in high yields via (3,5)-oxonium-ene reaction. This protocol tolerates a wide range of substituents and functional groups. Mild reaction conditions, shorter time, and