反应详情

A suspension of 5-(2-oxo-pyrrolidin-1-yl)-isophthalic acid monomethyl ester (A75) (200 mg, 76 mmol, 1 equiv) in CH2Cl2 (20 ml) at room temperature was treated with a few drops of DMF followed by (COCl)2 (100 mg, 0.8 mmol, 1.1 equiv). The resulting mixture was stirred for 1 h and then propylamine (140 mg, 2.4 mmol, 3.3 equiv) was added and the resulting solution was stirred for 30 min. The solution was then washed with 2N aqueous HCl solution (30 ml), saturated aqueous NaHCO3 solution (30 ml), dried over MgSO4 and concentrated in vacuo to give 5-(2-oxo-pyrrolidin-1-yl)-N-propyl-isophthalamic acid methyl ester (B77) (127 mg, 55%) as a cream waxy solid.

1. stirringthe resulting solution was stirred for 30 min
2. washThe solution was then washed with 2N aqueous HCl solution (30 ml), saturated aqueous NaHCO3 solution (30 ml)
3. dry with materialdried over MgSO4
4. concentrationconcentrated in vacuo