反应详情

To a solution of ethyl (2E)-3-{5-[(3R)-3-piperidinylamino]-2-pyrazinyl}acrylate dihydrochloride (300 mg, 0.86 mmol) in DMF (6 mL) were added diisopropylethylamine (366 mg, 2.84 mmol) and 6-chloropyrimidine (128 mg, 1.11 mmol) at ambient temperature and the mixture was stirred at ambient temperature for 18 hrs. The reaction mixture was evaporated in vacuo and the residue was partitioned between water and EtOAc. The organic layer was separated, washed water and brine, dried over magnesium sulfate, and evaporated in vacuo. The residue was purified by silica gel column chromatography (chloroform-MeOH=95-5/hexane-EtOAc=¼) to give ethyl (2E)-3-(5-{[(3R)-1-(2-pyrimidinyl)-3-piperidinyl]amino}-2-pyrazinyl)acrylate (141 mg, 46%) as an amorphous powder.

1. customThe reaction mixture was evaporated in vacuo
2. customthe residue was partitioned between water and EtOAc
3. customThe organic layer was separated
4. washwashed water and brine
5. dry with materialdried over magnesium sulfate
6. customevaporated in vacuo
7. customThe residue was purified by silica gel column chromatography (chloroform-MeOH=95-5/hexane-EtOAc=¼)