Triethylamine → tert-butyl N-[4-[3-[2-methyl-6-(4-methylsulfonylbutanoylamino)phenyl]phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate

Participants

Reaction Steps

4-Methanesulfonyl-butyryl chloride (0.333 g, 1.81 mmol) [example 209, step a] was added to a solution of {[4-(2′-amino-6′-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester (0.468 g, 0.905 mmol) [example 25, step c] and triethylamine (1.83 g, 18.1 mmol) in dichloromethane at room temperature. The reaction was stirred for 24 hours and then evaporated. Column chromatography (25% EtOAc in hexanes) of the residue yielded the title compound (0.520 g, 78%) as a solid. ESI-MS (m/z): Calcd. for C29H35N3O7S4: 665.14; found: 665.8.

Provenance & Evidence