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

HRID 989340

반응식

HRID 989340 반응식
C([Li])CCC.[C:6](#[N:8])[CH3:7].CN(/[CH:12]=[N:13]/[C:14]1[C:15]([C:26]([O:28]C)=O)=[CH:16][C:17]2[C:22]([CH:23]=1)=[CH:21][CH:20]=[C:19]([O:24][CH3:25])[CH:18]=2)C.C(O)(=O)C>O1CCCC1>[CH3:25][O:24][C:19]1[CH:20]=[CH:21][C:22]2[CH:23]=[C:14]3[C:15]([C:26](=[O:28])[C:7]([C:6]#[N:8])=[CH:12][NH:13]3)=[CH:16][C:17]=2[CH:18]=1

참가 물질

6

반응물 4

HCID 176Acetic Acid2회HCID 6342AcetonitrileHCID 178418339ButyllithiumHCID 178496951HCID 178496951, 화합물

생성물 1

HCID 98136637-Methoxy-4-oxo-1,4-dihydrobenzo[g]quinoline-3-carbonitrile

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매3회

반응 조건

온도
-78 °C

실험 절차

To a solution of 4.75 mL (11.88 mmol) of n-butyllithium (2.5M in hexane) in 4.0 mL of tetrahydrofuran at −78° C. is added dropwise a solution of 0.68 mL (13.1 mmol) of acetonitrile in 6.8 mL of tetrahydrofuran. After completion of addition, the suspension is stirred for 10 minutes. To this is added 1.36 g (4.75 mmol) of methyl 3-{[(E)-(dimethylamino)methylidene]amino}-7-methoxy-2-naphthoate in 32 mL of tetrahydrofuran dropwise. The resulting reaction mixture is stirred at −78° C. for 1 hour, at −5° C. for 1 hour and at room temperature for 15 minutes. The reaction mixture is again cooled to −78° C. and 1.72 g (28.6 mmol) of acetic acid is added dropwise. After addition of the acetic acid, the reaction mixture is allowed to warm to room temperature. The precipitate is collected by filtration and washed sequentially with water, acetonitrile and methanol. After drying in vacuo, this yields 796.9 mg (67%) of 7-methoxy-4-oxo-1,4-dihydrobenzo[g]quinoline-3-carbonitrile as a deep yellow solid, mp>260° C.

후처리

  1. additionAfter completion of addition
  2. customThe resulting reaction mixture
  3. stirringis stirred at −78° C. for 1 hour, at −5° C. for 1 hour and at room temperature for 15 minutes
  4. temperatureto warm to room temperature
  5. filtrationThe precipitate is collected by filtration
  6. washwashed sequentially with water, acetonitrile and methanol
  7. customAfter drying in vacuo

출처 및 근거

ORD 기록
ord-e64447100648458bb0aacd9594b0b3c2
출처 데이터셋
uspto-grants-2003_10
특허 번호
US06638929B2

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