5-Amino-2,3-dihydrophthalazine-1,4-dione (Luminol 1) reacted with some organophosphorus reagents such as phosphonium ylides, trialkyl phosphites, and tris(dialkylamino)phosphines to afford the corresponding olefinic products 5a-e, alkoxy-, and dialkylamino derivatives of Luminol 6a-e.4-Thioxo-3,4-dihydrophthalazin-1(2H)-one derivative 7 was synthesized from the reaction of Luminol (1) with thiatin...