Novel Process for the Synthesis of Class I Antiarrhythmic Agent (±)-Cibenzoline and Its Analogs
作者:Atul R. Gholap、Vincent Paul、Kumar V. Srinivasan
DOI:10.1080/00397910802006388
日期:2008.8.18
Abstract Synthesis of (±)-cibenzoline and its analogs has been achieved by a simple sequence of reactions. The diaryl cyanoolefin intermediate 3 could be prepared by Knoevenagel condensation of benzophenone with ethylcyanoacetate to form the tetra-substituted olefinintermediate 2 followed by Krapcho deethoxycarbonylation or from β-hydroxynitrile intermediate 2′ followed by the elimination of hydroxyl