TABLE 3.

Substrate scope of aminobromination of N-(4-(diphenylphosphoryl)benzyl) cinnamamides 2a-k.

Unless otherwise specified, all reactions were performed with 0.3 mmol of 2a-k, 0.6 mmol of 4-TsNH₂, 0.6 mmol of NBS, 150 mg of MS 4Å in 3 ml of chloroform at reflux under N₂. The dr values were determined by the analysis of ¹H NMR spectra. Isolated yields with GAP washing.