Dimethylformamide → Dimethyl Quinoline-2,3-dicarboxylate

HRID 980552ノート

反応式

HRID 980552 の反応式
[CH3:1]N(C)C=O.P(Cl)(Cl)(Cl)=O.[C:11]1([NH:17][C:18]([C:24]([O:26][CH3:27])=[O:25])=[CH:19][C:20]([O:22][CH3:23])=[O:21])[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1>C(Cl)CCl>[N:17]1[C:11]2[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=2)[CH:1]=[C:19]([C:20]([O:22][CH3:23])=[O:21])[C:18]=1[C:24]([O:26][CH3:27])=[O:25]

参加物

5

反応物 3

HCID 6228DimethylformamideHCID 24813Phosphorus oxychlorideHCID 2797953Dimethyl 2-(Phenylamino)-2-butenedioate

生成物 1

HCID 11010215Dimethyl Quinoline-2,3-dicarboxylate

試薬・触媒・溶媒 1

HCID 111,2-Dichloroethane溶媒2 回

実験手順

To a solution of dimethylformamide (DMF, 0.1 mol) in ethylenedichloride (EDC, 100 ml), cooled in an ice bath, is added dropwise with stirring phosphorous oxychloride (POCl3, 0.10 mol). The resulting solution is stirred for one and one-half hours at room temperature and then cooled in an ice bath. To the cooled solution is then added, in small increments, a solution of dimethyl 3-phenylaminobut-2-ene-dioate in ethylene dichloride. The resulting mixture is thereafter heated to reflux for three hours, cooled, and washed with half saturated brine. The organic phase is separated from the aqueous phase and dried. The solvent is removed under vacuum, and the residue recrystallized from methanol to afford 18.2 g (0.074 mol) of dimethyl 2,3-quinolinedicarboxylate, mp 105°-106.5° C.

後処理

  1. temperaturecooled in an ice bath
  2. additionTo the cooled solution is then added, in small increments
  3. temperatureThe resulting mixture is thereafter heated
  4. temperatureto reflux for three hours
  5. temperaturecooled
  6. washwashed with half saturated brine
  7. customThe organic phase is separated from the aqueous phase
  8. customdried
  9. customThe solvent is removed under vacuum
  10. customthe residue recrystallized from methanol

出典と根拠

ORDレコード
ord-64027e5c42554ab9b00c22c60cedba8c
出典データセット
uspto-grants-1987_01
特許番号
US04638068

反応ノート

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