Cyclocarbopalladation/Stille Cascade: Stereoselective Access to Quaternary Functionalized Carbons

Org Lett. 2021 Aug 20;23(16):6568-6572. doi: 10.1021/acs.orglett.1c02400. Epub 2021 Aug 10.

Abstract

Exploration of the 4-exo-dig cyclocarbopalladation in the discovery of new and original scaffolds afforded some unexpected results. The search for a way to produce seven-membered ring systems led to polycyclic molecules bearing a tetrasubstituted carbon. The triple bond that substitutes the cyclohexene ring on the starting compound is crucial for a high stereoselectivity. This observation has been confirmed by the reaction of a nonsubstituted cyclohexene ring resulting in poor stereoselectivity and low yields.