Water → HCID 86648994、化合物

反応式

P(Cl)(Cl)(Cl)=O.[Cl:6][C:7]1[N:12]=[C:11]([N:13]([CH2:15][CH:16]2[CH2:18][CH2:17]2)[CH3:14])[CH:10]=[N:9][CH:8]=1.O.CN([CH:23]=[O:24])C>>[Cl:6][C:7]1[C:8]([CH:23]=[O:24])=[N:9][CH:10]=[C:11]([N:13]([CH2:15][CH:16]2[CH2:18][CH2:17]2)[CH3:14])[N:12]=1

参加物

反応物 4

HCID 962Water

HCID 6228Dimethylformamide2 回

HCID 24813Phosphorus oxychloride

HCID 61360573HCID 61360573、化合物

生成物 1

HCID 86648994HCID 86648994、化合物収率 71%

実験手順

Phosphoryl chloride (0.43 mL) was added dropwise to DMF (1 mL) at 0° C. The mixture was stirred for 15 min, and a solution of 6-chloro-N-(cyclopropylmethyl)-N-methylpyrazin-2-amine (0.46 g) in DMF (1 mL) was added dropwise thereto. The mixture was stirred at 50° C. for 16 hr, water (5 mL) was added at 0° C., and the mixture was stirred at room temperature for 1.5 hr. The mixture was extracted with ethyl acetate. The aqueous layer was extracted again with ethyl acetate. The combined organic layer was washed with water and saturated brine, dried over magnesium sulfate, and concentrated. The residue was purified by silica gel column chromatography (solvent gradient: 5→20% ethyl acetate/hexane) to give the title compound (0.37 g, 71%) as a pale-yellow oil.