Ag-mediated cascade decarboxylative coupling and annulation: a convenient route to 2-phosphinobenzo[b]phosphole oxides

Abstract

The first facile and practical silver-mediated cascade reaction of arylpropiolic acids with diarylphosphine oxides has been developed, providing a general, one step approach to structurally sophisticated 2-phosphinobenzo[b]phosphole oxide frameworks of importance in materials science via sequential decarboxylative C–P cross-coupling and C–H/P–H functionalization with operational simplicity and excellent functional group compatibility.