[2'-(N-t-Butylsulfamoyl)biphenyl-4-yl]methyl bromide → 5-n-Butyl-4-[[2'-(N-t-butylsulfamoyl)biphenyl-4-yl]methyl]-2,4-dihydro-2-(3-nitrophenyl)-3H-1,2,4-triazol-3-one

Participants

Reaction Steps

By the procedure of Example 13, Step A, 5-n-butyl-2,4-dihydro-2-(3-nitrophenyl)-3H-1,2,4-triazol-3-one (from Step A) was alkylated with [2'-(N-t-butylsulfamoyl)biphenyl-4-yl]methyl bromide (from Example 12, Step D). Flash chromatography of the crude product on silica gel (gradient elution with 0.5-1.0% MeOH in CH2Cl2) gave a 74% yield of the title compound as an off-white solid, mp 164°-165° C., homogeneous by TLC (19:1 CH2Cl2 --MeOH), mass spectrum (FAB) m/e 564 (M+1)+.

Provenance & Evidence