Diversity-Oriented Synthesis of Functionalized Diaryl Sulfones by Regio­selective [3+3] Cyclizations of 1,3-Bis(siloxy)buta-1,3-dienes with 2-(Aryl­sulfonyl)-3-ethoxy-2-en-1-ones: Scope and Limitations

Abstract

The formal [3+3] cyclization of 1,3-bis(siloxy)buta-1,3-dienes with 2-(arylsulfonyl)-3-ethoxy-2-en-1-ones, readily available by reaction of b-keto sulfones with triethyl orthoformate, allows the synthesis of a variety of functionalized diaryl sulfones with very good regioselectivity.