LiClIO4*3H2O; (1R,2R)-(+)-1,2-diphenylethylenediamine; acetic acid in 1,4-dioxane T=20°C; Michael condensation; 24 h; optical yield given as percent eeenantioselective reaction;
1: With ethylenediamine diacetic acid in 1,4-dioxane T=80°C; tandem Knoevenagel-hetero-Diels-Alder reaction; 2: With hydrogenchloride; silica gel in water; trifluoroacetic acid T=20°C; Title compound not separated from byproducts;
