Sulfonic-carboxylic x1 X? R Sultone halide FFF 1 11 c1 c1 F 111 IV F c1 c1 v\-IFF c1 TI1 IX c1 FF VI11 X opening at the 8-0 bond is indicated by the presence of a carbonyl group in the final product. In the second step, halogen ion, XI@, is expelled. It is of interest that in those cases in which a choice between C1-and F-exists, the expelled anion is always C1- (compounds I11 and VIII). In the final step, the expelled anion displaces triethylamine from ...
