反应详情

The 6-[(6-ethoxy[1,2,4]triazolo[4,3-b]pyridazin-3-yl)sulphanyl]-1,3-benzothiazol-2-amine was prepared according to the method described in Example 17a, but using 587 mg of 2-amino-1,3-benzothiazol-6-yl thiocyanate (commercial), 20 cm3 of degassed ethanol, 13 mg of potassium dihydrogen phosphate in 0.2 cm3 of water, 1.31 g of DL-dithiothreitol and 562 mg of 3-chloro-6-ethoxy[1,2,4]triazolo[4,3-b]pyridazine. 783 mg of 6-[(6-ethoxy[1,2,4]triazolo[4,3-b]pyridazin-3-yl)sulphanyl]-1,3-benzothiazol-2-amine are thus obtained in the form of a whitish powder, the characteristics of which are as follows:

1. customThe 6-[(6-ethoxy[1,2,4]triazolo[4,3-b]pyridazin-3-yl)sulphanyl]-1,3-benzothiazol-2-amine was prepared