Bromination of sydnones. III†. Bromination of 3-(2-substituted-phenyl)sydnones and subsequent side chain modification
Part II, S. J. Hodson and K. Turnbull, J. Heterocyclic Chem., 22, 1223 (1985).
Abstract
Bromination of the sydnone ring of several ortho-substituted N-arylsydnones is reported. Subsequent side-chain modification generally can be achieved without concomitant removal of the 4-bromo protective group.