Fig. 1From: Formation of amides: one-pot condensation of carboxylic acids and amines mediated by TiCl4 Chiral GC/MS analyses of crude amides 27 and 28: a (S)-2-(N-tert-butoxycarbonyl-amino)-N-phenylpropanamide (27); b a mixture of 27 and 28 (approx. 1:1); c (R)-2-(N-tert-butoxycarbonylamino)-N-phenylpropanamide (28)Back to article page