Reaktion #64584

ord-0857376cb8d44a71bf1bd924fb40b46d

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Vorschrift

Reaction of 5-n-butyl-2,4-dihydro-4-[(3-fluoro-2'-sulfamoyl-biphenyl-4-yl)methyl]-2-[5-(propionylamino)-2-(trifluoromethyl)phenyl]-3H-1,2,4-triazol-3-one (from Step C) with 2-fluorobenzoic acid (3 equivalents), CDI (3 equiv), DBU (3 equiv), and DMAP (3 equiv) according to the method of Example 51 (as modified in Example 81) gave a a 93% yield of the title compound as a white, stiff foam, mp 119°-122° C.; homogeneous by TLC in 9:1 CH2Cl2 --MeOH; mass spectrum (FAB) m/e 742 (M+1)+.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US05411980uspto-grants-1995_05