Triethylamine → Methyl 4-[3-(4-{[(2-{[3-(chlorosulfonyl)benzoyl]amino}-4,5,6,7-tetrahydro-1-benzothiophen-3-yl)carbonyl]amino}phenyl)propyl]benzoate

Participants

Reaction Steps

To a mixture of 3.34 g of methyl 4-[3-(4-{[(2-amino-4,5,6,7-tetrahydro-1-benzothiophen-3-yl)carbonyl]amino}phenyl)propyl]benzoate, 2.2 mL of triethylamine, and 40 mL of dichloromethane were added a mixture of 2.2 g of 3-(chlorosulfonyl)benzoyl chloride and 10 mL of dichloromethane under ice-cooling, followed by stirring at room temperature for 7 hours. The reaction mixture was concentrated under reduced pressure and the residue was suspended in ethanol. The precipitate was collected by filtration to obtain 1.42 g of methyl 4-[3-(4-{[(2-{[3-(chlorosulfonyl)benzoyl]amino}-4,5,6,7-tetrahydro-1-benzothiophen-3-yl)carbonyl]amino}phenyl)propyl]benzoate as a yellow solid.

Provenance & Evidence