An enantiopure aza-analogue of pseudo-cocaine was synthesized starting from a 5-substituted 3-pyrazolidinone by using an N-acylhydrazonium ion cyclization with a dioxenone nucleophile as the key step. Copyright (C) 1996 Elsevier Science Ltd
An enantiopure aza-analogue of pseudo-cocaine was synthesized starting from a 5-substituted 3-pyrazolidinone by using an N-acylhydrazonium ion cyclization with a dioxenone nucleophile as the key step. Copyright (C) 1996 Elsevier Science Ltd