Rhodium-catalyzed addition of sulfonyl hydrazides to allenes: regioselective synthesis of branched allylic sulfones
作者:Vahid Khakyzadeh、Yu-Hsuan Wang、Bernhard Breit
DOI:10.1039/c7cc02375h
日期:——
A rhodium-catalyzed regioselective addition of sulfonyl hydrazides to allenes is reported. With Rh(I)/DPEphos/benzoic acid as the catalyst system, branched allylic sulfones can be obtained, in good to excellent yields and regioselectivities.
nucleophile was developed. The reaction utilizes inexpensive and readily available (CH3CN)3W(CO)3 as a precatalyst and proceeds at 60 °C temperature in the presence of 2,2′-bipyridine and its derivatives as ligand. The synthetic utility of allylic sulfones as electrophile was further demonstrated through Suzuki–Miyaura cross-coupling as showcased by the formal synthesis of (±)-hinokiresinol.