反应详情

温度

100 °C

To a solution of 2-(2,5-dichloro-phenoxy)-nicotinic acid (42.6 mg, 0.15 mmol, 1.0 equiv; Example 31, Step 1) in anhydrous DMF (1 mL) was added 1-methyl-1,2,3,4-tetrahydro-quinoxaline (26.7 mg, 0.18 mmol, 1.2 equiv; [CAS RN 36438-97-8]), N-ethyldiisopropylamine (97 mg, 131 μL, 0.75 mmol, 5.0 equiv; [CAS RN 7087-68-5]) and HATU (68 mg, 0.18 mmol, 1.2 equiv; [CAS RN 148893-10-1]). The reaction mixture was heated by microwave irradiation to 100° C. for 30 min. Removal of the solvent mixture under reduced pressure and purification by preparative HPLC on reversed phase (Xterra® PrepMSC 18, 5 μm, 19×50 mm column equipped with a Gilson Liquid Handler 215 autosampler, two Rainin Dynamax® SD-300 pumps, a Sedex ELSD 75 lightscatter and a Dionex UVD 340S UV detector) eluting with a gradient of acetonitrile/water provided 15.6 mg (25%) of the title compound. MS (ISP): 413.9 [M+H]+.

1. customRemoval of the solvent mixture
2. customunder reduced pressure and purification by preparative HPLC on reversed phase (Xterra® PrepMSC 18, 5 μm, 19×50 mm column
3. customequipped with a Gilson Liquid Handler 215 autosampler, two Rainin Dynamax® SD-300 pumps
4. washa Sedex ELSD 75 lightscatter and a Dionex UVD 340S UV detector) eluting with a gradient of acetonitrile/water