Highly diastereoselective aminobromination of β-methyl-β-nitrostyrenes with t-butyl N,N-dibromocarbamate/t-butyl carbamate as bromine/nitrogen sources

A highly regio- and stereoselective aminobromination of β-methyl-β-nitrostyrenes with K3PO4 as catalyst and BocNH2/BocNBr2 as nitrogen/bromine has been established. The N-protecting group was removed under simple and mild condition, giving free bromoamines.