靛红酸酐 、
2-(6-chloro-7-methyl-1,4,2-benzodithiazin-3-ylamino)acetonitrile 1,1-dioxide 以
甲苯 为溶剂,
反应 44.0h,
以97%的产率得到6'-chloro-7'-methyl-1',1',2,6-tetraoxo-1,2-dihydrospiro-[4H-benzo[d][1,3,7]oxadiazocine-4,3'(2'H)-[1,4,2]benzodithiazine]-5(6H)-acetonitrile