Аннотация:
A one-pot synthesis of crown thioethers, 1,10-dioxa-4,7,13,16-tetrathiacyclooctadecanes and 1-oxa-4,7-dithiacyclononanes, which are the 2:2 and 1:1 cycloadducts of the homolytic macrocyclization of alkynes with 3-oxapentane-1,5-dithiol, has been developed.