Chen, Qiang Asymmetric syntheses of (-)-pentazocine and (-)-eptazocine through an aza-Prins cyclization. [electronic resource] - Chemistry, an Asian journal Nov 2012 - 2543-6 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1861-471X Standard No.: 10.1002/asia.201200505 doi Subjects--Topical Terms: Aza Compounds--chemistryCrystallography, X-RayCyclazocine--analogs & derivativesCyclizationMolecular ConformationPentazocine--chemical synthesisStereoisomerism