Rhodium-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles and epoxides: Regioselective synthesis of substituted 3,4-dihydro-2 H-1,4-oxazines

Article abstract of DOI:10.1021/ol5021042

Rhodium-catalyzed transannulation of 1,2,3-triazoles and ring-opening reactions of epoxides is described. A number of 3,4-dihydro-2H-1,4-oxazines are obtained in moderate yields probably involving generation of α-imino rhodium(II) carbene species.