Morpholine → HCID 12472015, compound

Participants

Reaction Steps

4.8 g. (0.0152 mole) of 10-chloro-7-methyl-3-(trifluoromethyl)-5H-s-triazolo[4,3-d][1,4]benzodiazepin-6(7H)-one from example 1a are dissolved in 40 ml. of morpholine and the resulting solution is refluxed for 3 days. The morpholine is removed under vacuum, 3N aqueous NaOH is added, and the mixture is extracted with benzene. The benzene solution is dried over Na2SO4, decanted from drying agent, and the solvent removed under vacuum to yield a gum. This gum is chromatographed on silica gel plates with chloroform/ethyl acetate, 6:4. The largest band is isolated, extracted with chloroform, the chloroform is evaporated, and the residue is recrystallized from ethanol to yield 3-[5-chloro-2-(methylamino)phenyl]-4-[2-oxo-2-(4-morpholinyl)ethyl]-5-(trifluoromethyl)-1,2,4-triazole; m.p. 152°-153°.

Provenance & Evidence