Ethanol → HCID 14851916, compound

Participants

Reaction Steps

The title compound was prepared by coupling 6-(2-fluoro-phenyl)-8-iodo-1-methyl-4H-[1,2,4]triazolo[4,3-a][4,1]benzodiazepine with rac-2-ethynyl-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol [ref. H. Mayer et al., Helv. Chim. Acta, 67, 650 (1963)]under the conditions described in Example 37. The product was isolated by chromatography over the 50-fold amount of silica gel using 5% (v/v) of ethanol in methylene chloride. The clean fractions containing product were combined and evaporated. The residue was crystallized from ethanol/ethyl acetate to give colorless crystals of rac-2-{[6-(2-fluorophenyl)-1-methyl-4H-[1,2,4]triazolo[4,3-a][4,1]benzodiazepin-8-yl]ethynyl}-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol with m.p. 265°-267°.

Provenance & Evidence