Stannous chloride dihydrate → N4-(3-Ethynylphenyl)quinazoline-4,6-diamine

HRID 1968625노트

반응식

HRID 1968625 반응식
[C:1]([C:3]1[CH:4]=[C:5]([NH:9][C:10]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([N+:20]([O-])=O)[CH:18]=3)[N:13]=[CH:12][N:11]=2)[CH:6]=[CH:7][CH:8]=1)#[CH:2].O.O.Cl[Sn]Cl.C([O-])(O)=O.[Na+]>C(OCC)(=O)C>[C:1]([C:3]1[CH:4]=[C:5]([NH:9][C:10]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([NH2:20])[CH:18]=3)[N:13]=[CH:12][N:11]=2)[CH:6]=[CH:7][CH:8]=1)#[CH:2]

참가 물질

5

반응물 3

HCID 61436Stannous chloride dihydrateHCID 516892Sodium BicarbonateHCID 16045443N-(3-ethynylphenyl)-6-nitroquinazolin-4-amine

생성물 1

HCID 11492625N4-(3-Ethynylphenyl)quinazoline-4,6-diamine수율 89%

시약·촉매·용매 1

HCID 8857Ethyl Acetate용매

실험 절차

A mixture of N-(3-ethynylphenyl)-6-nitroquinazolin-4-amine (1.00 g, 3.45 mmol) and SnCl2.2H2O (3.10 g, 13.8 mmol) in ethyl acetate (35 mL) was refluxed for 2 h and then cooled to room temperature. After its pH was adjusted to 9-10 with 5% aqueous NaHCO3, the mixture was subject to extraction with EtOAc. The combined organic layers were washed with saturated brine and H2O and dried. The solvent was removed under reduced pressure to provide 0.79 g (89%) of N4-(3-ethynylphenyl)quinazoline-4,6-diamine as a yellow solid.

후처리

  1. temperaturewas refluxed for 2 h
  2. extractionthe mixture was subject to extraction with EtOAc
  3. washThe combined organic layers were washed with saturated brine and H2O
  4. customdried
  5. customThe solvent was removed under reduced pressure

출처 및 근거

ORD 기록
ord-b9d9d20b922948a08f574aebd9269fff
출처 데이터셋
uspto-grants-2013_04
특허 번호
US08426430B2

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