Synthesis of free and ligated 1,2-thiaphosphetanes – expanding the pool of strained P-ligands†‡,10.1039/C8CC09892A

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Synthesis of free and ligated 1,2-thiaphosphetanes – expanding the pool of strained P-ligands†‡

Andreas Wolfgang Kyri,Florian Gleim,David Biskup,Gregor Schnakenburg,Arturo Espinosa Ferao,Rainer Streubel

Chemical Communications Pub Date : 01/18/2019 00:00:00 , DOI:10.1039/C8CC09892A

Abstract

While P(V) 1,2-oxaphosphetanes were investigated in great detail over the past decades, the knowledge about P(V) 1,2-thiaphosphetanes is rather scarce, and P(III) derivatives are unknown. Herein, we present the synthesis of the first P(III) complex derivatives formed in the coordination sphere of group 6 metals and, additionally, the first unligated P(III) 1,2-thiaphosphetanes. The latter display an unusually low HOMO–LUMO gap thus constituting excellent candidates for redox-cycling organocatalysts.