Dihydrogenphosphate → 6-{[6-(4-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]sulphanyl}-N-[2-(morpholin-4-yl)ethyl]-1,3-benzothiazol-2-amine

Participants

Reaction Steps

8 mg of dihydrogen phosphate in 1 cm3 of water, 680 mg of DL-dithiothreitol and 336 mg of 3-chloro-6-(4-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazine are added, at 20° C., to a solution of 636 mg of 1,1-dimethylethyl[2-(morpholin-4-yl)ethyl](6-thiocyanato-1,3-benzothiazol-2-yl)carbamate in 10 cm3 of ethanol degassed with argon for 5 min. The suspension is stirred at reflux for 18 h. The reaction is placed in a refrigerator overnight and then the greyish-white solid is spin-filter-dried. This solid is washed with diethyl ether and then made into a paste in dichloromethane and spin-filter-dried. 222 mg of 6-{[6-(4-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]sulphanyl}-N-[2-(morpholin-4-yl)ethyl]-1,3-benzothiazol-2-amine are thus obtained in the form of a greyish-white powder, the characteristics of which are as follows:

Provenance & Evidence