The water-soluble TTF reagent 7 undergoes the radical-polar crossover react
ion in 1:1 acetone:water with a range of arenediazonium tetrafluoroborates
and in water with diazonium chlorides. Purification of the reaction product
s is greatly facilitated by using 7 compared with TTF. (C) 2000 Elsevier Sc
ience Ltd. All rights reserved.