Synthesis of Ynolates via Double Deprotonation of Nonbrominated Esters

Org Lett. 2019 Sep 6;21(17):6585-6588. doi: 10.1021/acs.orglett.9b02069. Epub 2019 Jul 13.

Abstract

Herein, we report a double deprotonation method used for the preparation of ynolates starting from nonbrominated 2,6-di-tert-butylphenyl esters. The current method is superior to the previously described double lithium/halogen exchange approach because easily accessible starting materials are used. This method will be especially useful for preparation of ynolates bearing functional groups in organic synthesis.