(R,S)-Nicotine was resolved through diastereomeric salt formation using dibenzoyl-d-tartaric acid and dibenzoyl-l-tartaric acid to obtain enantiomerically pure (S)-nicotine and (R)-nicotine.
[EN] NICOTINE SALT WITH M ETA-SALICYLIC ACID<br/>[FR] SEL DE NICOTINE AVEC DE L'ACIDE MÉTA-SALICYLIQUE
申请人:ALEXZA PHARMACEUTICALS INC
公开号:WO2015006652A1
公开(公告)日:2015-01-15
The present disclosure relates generally to the field of nicotine delivery. The disclosure teaches a nicotine meta-salicylate. More specifically, the disclosure teaches a condensation nicotine aerosol where nicotine meta-salicylate is vaporized. This disclosure relates to aerosol nicotine delivery devices. The delivery devices can be activated by actuation mechanisms to vaporize thin films comprising a nicotine meta-salicylate. More particularly, this disclosure relates to thin films of nicotine salt with meta salicylic acid for the treatment of nicotine craving and for effecting smoking cessation.
direct oxidation of unprotected amino alcohols to their corresponding amino carbonylcompounds has often posed serious challenges in organic synthesis and has constrained chemists to adopting an indirect route, such as a protection/deprotection strategy, to attain their goal. Described herein is a highly chemoselective aerobic oxidation of unprotected amino alcohols to their amino carbonyl compounds
[EN] PREPARATION OF RACEMIC NICOTINE BY REACTION OF ETHYL NICOTINATE WITH N-VINYLPYRROLIDONE IN THE PRESENCE OF AN ALCOHOLATE BASE AND SUBSEQUENT PROCESS STEPS<br/>[FR] PRÉPARATION DE NICOTINE RACÉMIQUE PAR RÉACTION DE NICOTINATE D'ÉTHYLE AVEC DE LA N-VINYLPYRROLIDONE EN PRÉSENCE D'UNE BASE D'ALCOOLATE, ET ÉTAPES DE TRAITEMENT SUIVANTES
申请人:SIEGFRIED AG
公开号:WO2019121644A1
公开(公告)日:2019-06-27
The present invention relates to a method of preparing racemic nicotine comprising: (i) reacting ethyl nicotinate and N-vinylpyrrolidone in the presence of an alcoholate base to 3-nicotinoyl-1-vinylpyrrolidin-2-one; (ii) reacting the 3-nicotinoyl-1-vinylpyrrolidin-2-one with an acid to myosmine; (iii) reducing the myosmine to nornicotine using a reducing agent; and (iv) methylating the nornicotine to obtain the racemic nicotine.