Chiral (S)-(+) 1-substituted aryl-4-(1-phenyl) ethylformamido-5-amino-1,2,3-triazole: A new class of chiral ligands for the silver(I)-promoted enantioselective allylation of aldehydes
Some novel chiral ligands, (S)-(+) 1-substituted aryl-4-(1-phenyl) ethylformamido-5-amino-1,2,3-triazoles, were prepared starting from 1-substituted aryl-4-ethoxycarbonyl-5-amino-1,2,3-triazoles and other reagents. They were used as catalytic chiral ligands in the silver (I)-promoted enantioselective allylation reaction of aldehydes with allyltributyltin.