Diversity-Oriented Synthesis of Functionalized Diaryl Sulfones by Regio-selective (3+3) Cyclizations of l,3-Bis(siloxy)buta-l,3-dienes with 2-(Aryl-sulfonyl)-3-ethoxy-2-en-l-ones: Scope and Limitations

摘要

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