Catalytic [4+1]-annulation of thioamides with carbenoid precursors

A Rh(II)/Cu(I)-catalyzed [4+1]-annulation of readily available thioamides with 1-sulfonyl-1,2,3-triazoles and diazoamides was developed, delivering a general approach toward highly substituted dihydrothiophenes. A series of dihydrothiophenes having a wide diversity of...