1,2-Dihydro-1,3-stannaboroles via organoboration of functionally tin substituted alkynylstannanes
Abstract
Organoboration of suitably substituted alkylnylstannanes leads to alkenyl-diorganoboranes from which 1,2-dihydro-1,3-stannaboroles (7) may be obtained in high yield via intramolecular proton abstraction by a stannylamino group followed by amine elimination and Sn–C ring closure.