Practical approaches to labelling terminal alkynes with deuterium

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.

Source: Journal of Labelled Compounds and Radiopharmaceuticals - January 27, 2022 Category: Biochemistry Authors: Melanie Y. T. Chan, Arbab Anwar, William J. S. Lockley Tags: RESEARCH ARTICLE Source Type: research