Pyridine → HCID 69360208, compound

Participants

Reaction Steps

A solution of 5-amino-N,N-dipropyl-isophthalamic acid methyl ester (D88) (1.4 g, 5.0 mmol, 1 equiv), DMAP (100 mg) and pyridine (392 mg, 5.0 mmol, 1.1 equiv) in CH2Cl2 (20 ml) was treated dropwise with 3-chloropropane-1-sulfonyl chloride (946 mg, 5.3 mmol, 1.1 equiv). The resulting mixture was stirred for 16 h at room temperature and then diluted with AcOEt (100 ml). The resulting solution was washed with 2N aqueous HCl solution (50 ml) followed by saturated aqueous NaHCO3 solution (50 ml), dried over MgSO4 and concentrated in vacuo. The residue was triturated with Et2O to give 5-(3-chloro-propane-1-sulfonylamino)-N,N-dipropyl-isophthalamic acid methyl ester (D91) (1.8 g, 86%) as a pink solid.

Provenance & Evidence