An optimized protocol for the multigram synthesis of 3-(trifluoromethyl)bicyclo[1.1.1]pent-1-ylglycine (CF3-Bpg)
                                
                                    
                                        作者:Pavel K. Mykhailiuk、Nataliia M. Voievoda、Sergii Afonin、Anne S. Ulrich、Igor V. Komarov                                    
                                    
                                        DOI:10.1016/j.jfluchem.2009.10.004
                                    
                                    
                                        日期:2010.2
                                    
                                    An optimized procedure for the multigram synthesis of 3-(trifluoromethyl)bicyclo[1.1.1]pent-1-ylglycine (CF3-Bpg) has been developed. The overall yield of the synthesis for the optimized up-scaling was increased from 35% to 53%. Moreover, conditions for separating the key isomeric aminonitriles 7 and 8 by crystallization were found, which greatly facilitated the isolation of 8 on a multigram scale. Following this optimized protocol, 100 g of optically pure CF3-Bpg have been synthesized. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.