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Oxalic Acid → 7-Chloro-2,3-dihydro-4-methyl-2-[2-methyl(phenylmethyl)amino]pyrido[3,2-f][1,4]oxazepin-5(4H)-one oxalate

HRID 4864
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HRID 4864 반응식
[Cl:1][C:2]1[CH:12]=[N:11][C:10]2[O:9][CH:8](CCCl)[CH2:7][N:6]([CH3:16])[C:5](=[O:17])[C:4]=2[CH:3]=1.[CH2:18]([CH2:25][NH2:26])[C:19]1C=C[CH:22]=[CH:21][CH:20]=1.[C:27]([OH:32])(=[O:31])[C:28]([OH:30])=[O:29]>C(O)C.C(O)(C)C>[C:27]([OH:32])(=[O:31])[C:28]([OH:30])=[O:29].[Cl:1][C:2]1[CH:12]=[N:11][C:10]2[O:9][CH:8]([NH:26][CH2:25][C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][C:27]=3[CH3:28])[CH2:7][N:6]([CH3:16])[C:5](=[O:17])[C:4]=2[CH:3]=1
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참가 물질

6

반응물 3

HCID 971Oxalic AcidHCID 1001Phenethylamine2회HCID 137264457-Chloro-2-(2-chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f][1,4]oxazepin-5(4H)-one

생성물 1

HCID 212715447-Chloro-2,3-dihydro-4-methyl-2-[2-methyl(phenylmethyl)amino]pyrido[3,2-f][1,4]oxazepin-5(4H)-one oxalate수율 47.9%

시약·촉매·용매 2

HCID 702Ethanol
용매
HCID 3776Isopropanol용매

실험 절차

To a solution of 6.0 g (0.022 mole) of 7-chloro-2-(2-chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f][1,4]-oxazepine-5(4H)-one in 50 ml of absolute ethanol was added 5.3 g (0.044 mole) of benzylmethylamine and the mixture heated to reflux for three days. The solvent was removed by rotary evaporation, and the residue was taken up in 100 ml of methylene chloride, which was subsequently washed with 2×50 ml of dilute sodium hydroxide and 50 ml water, dried over sodium sulfate, filtered, and concentrated by rotary evaporation. Residual benzylmethylamine was removed at 95° C., 0.5 mm Hg. However, the mass spectrum now showed starting material; therefore, the residue was taken up in 50 ml of absolute ethanol. To the resulting solution was added 2.7 g (0.022 mole) of benzylmethylamine and the mixture heated to reflux for 24 hrs. The reaction mixture was subjected to the same work-up as mentioned before. The syrup was treated with oxalic acid in isopropyl alcohol. The resulting crystals were recrystallized from ethanol/isopropyl alcohol to give 4.7 g (47.9%) of white crystals, m.p. 176°-179° C.

후처리

  1. temperaturethe mixture heated
  2. temperatureto reflux for three days
  3. customThe solvent was removed by rotary evaporation
  4. washwhich was subsequently washed with 2×50 ml of dilute sodium hydroxide and 50 ml water
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated by rotary evaporation
  8. customResidual benzylmethylamine was removed at 95° C.
  9. temperaturethe mixture heated
  10. temperatureto reflux for 24 hrs
  11. customThe resulting crystals were recrystallized from ethanol/isopropyl alcohol

출처 및 근거

ORD 기록
ord-c3bc64bc129e484f957dfe469d616691
출처 데이터셋
uspto-grants-1988_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04727152

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