反应详情

To a solution of 3-(2-Oxo-2,3-dihydro-benzimidazol-1-yl)-hexanoic acid ethyl ester (50 mg, 0.18 mmol) in DMF (10 mL) were added (3,8-Dimethyl-indolizin-1-ylmethyl)-trimethyl-ammonium; iodide, CAS: (3,8-Dimethyl-indolizin-1-ylmethyl)-trimethyl-ammonium; iodide (93.4 mg, 0.27 mmol) and K2CO3 (75 mg, 0.54 mmol) at room temperature under nitrogen atmosphere. The solution was heated to 100 C for 2 hours. The solution was cooled down and water was added. The solution was extracted with EtOAc and the combined organic layer was dried with MgSO4. The solution was filtered and the filtrate was concentrated. The residue was purified by CombiFlash with 20% EtOAc in Hexane as the eluent to afford the desirable product 3-[3-(3,8-Dimethyl-indolizin-1-ylmethyl)-2-oxo-2,3-dihydro-benzimidazol-1-yl]-hexanoic acid ethyl ester (20 mg, 26%) as a colorless foam.

1. customat room temperature
2. temperatureThe solution was heated to 100 C for 2 hours
3. temperatureThe solution was cooled down
4. extractionThe solution was extracted with EtOAc
5. dry with materialthe combined organic layer was dried with MgSO4
6. filtrationThe solution was filtered
7. concentrationthe filtrate was concentrated
8. customThe residue was purified by CombiFlash with 20% EtOAc in Hexane as the eluent