1-(Phenylsulfonyl)indol-2-yl Triflate: A Versatile Reagent for the Synthesis of 2-Substituted Indoles

Abstract
The palladium-catalysed reaction of 1-(phenylsulfonyl)indol-2-yl triflate 1, with a variety of aryl and heteroaryl boronic acids 2 or vinyl tributylstannane 3 provides a general and an efficient method for the synthesis of 2-substituted indoles 4.