“…Thus, during the synthesis of monobenzyl substituted 2-AAQ's 59, the temperature must be maintained below 100 • C. Meanwhile, the benzyl bromide 57 should be added dropwise and 2-AAQ must be in excess. 101 Reaction with 4,5-dichloro-l,2,3-dithiazolium chloride 2-AAQ was condensed with 4,5-dichloro-l,2,3-dithiazolium chloride (60) in dichloromethane at room temperature, followed by addition of pyridine, to give the desired 2-(4-chloro-[1,2,3]dithiazol-5-ylideneimino)anthraquinone (61) in good yields. 102 Microwave irradiation (150 W) of imino-l,2,3-dithiazole derivative 61 at 150 • C in the presence of a small amount of graphite (10% by weight) surprisingly afforded the angular 2-cyanobenzothiazole 62.…”