Acetic Acid → 7,8-Dimethoxy-4-oxo-1,4-dihydrobenzo[g]quinoline-3-carbonitrile

HRID 989288ノート

反応式

HRID 989288 の反応式
C([Li])CCC.[C:6](#[N:8])[CH3:7].CO[C:11]([C:13]1[C:22]([N:23]=[CH:24]N(C)C)=[CH:21][C:20]2[C:15](=[CH:16][C:17]([O:30][CH3:31])=[C:18]([O:28][CH3:29])[CH:19]=2)[CH:14]=1)=[O:12].C(O)(=O)C>C1COCC1.O>[CH3:31][O:30][C:17]1[C:18]([O:28][CH3:29])=[CH:19][C:20]2[CH:21]=[C:22]3[C:13]([C:11](=[O:12])[C:7]([C:6]#[N:8])=[CH:24][NH:23]3)=[CH:14][C:15]=2[CH:16]=1

参加物

7

反応物 4

HCID 176Acetic AcidHCID 6342AcetonitrileHCID 98799543-(Dimethylaminomethyleneamino)-6,7-dimethoxy-naphthalene-2-carboxylic acid methyl esterHCID 178418339Butyllithium

生成物 1

HCID 99435817,8-Dimethoxy-4-oxo-1,4-dihydrobenzo[g]quinoline-3-carbonitrile

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒3 回

実験手順

To a solution of 2.6 mL (6.3 mmol) of n-butyllithium (2.5M in hexane) in 2.0 ml of THF is added dropwise a solution of 0.36 mL (6.9 mmol) of acetonitrile in 6 mL of THF at −78° C. After completion of addition, the suspension is stirred for 15 minutes. To this is added 496.7 mg (1.57 mmol) of 3-(dimethylaminomethyleneamino)-6,7-dimethoxy-naphthalene-2-carboxylic acid methyl ester in 15 mL of THF dropwise. The resulting reaction mixture is stirred at −78° C. for 1.5 hours. Then 942.8 mg (15.7 mmol) of acetic acid is added dropwise. The reaction mixture is warmed to room temperature and is diluted with water. The precipitate is collected by filtration and washed with water and methanol. After drying in vacuo, this yields 406.0 mg(92.3%) of the product as a light brown solid, mp>265° C.

後処理

  1. additionAfter completion of addition
  2. customThe resulting reaction mixture
  3. stirringis stirred at −78° C. for 1.5 hours
  4. filtrationThe precipitate is collected by filtration
  5. washwashed with water and methanol
  6. customAfter drying in vacuo

出典と根拠

ORDレコード
ord-75ef102a975047d1a60e3574acfe484e
出典データセット
uspto-grants-2003_10
特許番号
US06638929B2

反応ノート

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