Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 18, # 7 p. 676 - 679
Khimiya Geterotsiklicheskikh Soedinenii, , # 7 p. 896 - 899
N-[(1S,2S)-2-amino-1,2-diphenylethyl]-N'-benzylthiourea in 1,4-dioxane T=25°C; Michael addition; 55 h; optical yield given as percent eeenantioselective reaction;