B(C6 F5 )3 -Catalyzed Ring Opening and Isomerization of Unactivated Cyclopropanes

Abstract

Catalytic amounts of B(C₆ F₅ )₃ promote the ring opening and subsequent isomerization of a series of unactivated cyclopropanes to afford terminal olefins in good yields when a hydrosilane and 2,6-dibromopyridine are employed as additives.

Keywords: C−C activation; boron; carbocations; isomerization; strained molecules.