Activation of the ketone of 5-Cyclodecenones towards thermal transannular cyclization to give trans-hydroazulenols

Article abstract of DOI:10.1016/S0040-4039(97)01760-7

The cyclization of 5-cyclodecenones substituted at C2 with an alkoxy group was examined. The alkoxy group sufficiently activates the ketone to allow for transannular cyclization upon heating, leading to trans fused hydroazulenols. In the cyclization of th