3-(Diethoxyphosphoryloxy)-1, 2, 3-benzotriazin-4(3H)-one (DE-PBT) was an organophosphorus coupling reagent developed byour group. It was an effective coupling
The resolutions of both enantiomers of the ornidazole and sec-nidazole were achieved with high enantiomeric excesses (ee>99%) by acylation of the corresponding