作者:Melanie Y. T. Chan、Arbab Anwar、William J. S. Lockley
DOI:10.1002/jlcr.3963
日期:2022.4
Base catalysed exchange with sodium hydroxide, calcium oxide or N,N,N,N-tetramethylguanidine in deuterium oxide is a viable procedure for the preparation of terminally deuterated alkynes for those alkynes stable to strong base. The use of silver perchlorate as a catalyst is an alternative practical option when labelling alkynes which are sensitive to base or contain functionalities which would lead to labelling elsewhere in the molecule. Labelling with this catalyst takes place smoothly at ambient temperature in a mixture of N,N-dimethylformamide and deuterium oxide.
用氢氧化钠、氧化钙或N,N,N,N-四甲基胍在重水中进行碱催化交换,是对那些对强碱稳定的末端去uterated炔烃制备的可行方法。当标记对碱敏感或含有可能导致其他部位标记功能团的炔烃时,使用高氯酸银作为催化剂是另一种实用选择。使用这种催化剂的标记过程在室温下于N,N-二甲基甲酰胺和重水的混合物中顺利进行。