Ethyl chloroformate → 6-chloro-3,4-dihydro-3-oxo-N-[1-(2-phenylethyl)-4-piperidyl]-2H-1,4-benzoxazine-8-carboxamide

HRID 329728

반응식

HRID 329728 반응식
[Cl:1][C:2]1[CH:3]=[C:4]([C:13]([OH:15])=O)[C:5]2[O:10][CH2:9][C:8](=[O:11])[NH:7][C:6]=2[CH:12]=1.C(Cl)(=O)OCC.[NH2:22][CH:23]1[CH2:28][CH2:27][N:26]([CH2:29][CH2:30][C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)[CH2:25][CH2:24]1.C(=O)([O-])O.[Na+]>O1CCCC1.CN(C)C=O.C(OCC)(=O)C.C(N(CC)CC)C>[Cl:1][C:2]1[CH:3]=[C:4]([C:13]([NH:22][CH:23]2[CH2:28][CH2:27][N:26]([CH2:29][CH2:30][C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)[CH2:25][CH2:24]2)=[O:15])[C:5]2[O:10][CH2:9][C:8](=[O:11])[NH:7][C:6]=2[CH:12]=1

참가 물질

9

반응물 4

HCID 10928Ethyl chloroformateHCID 516892Sodium BicarbonateHCID 107287881-(2-Phenylethyl)piperidin-4-amineHCID 147198366-Chloro-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-8-carboxylic acid

생성물 1

HCID 147198426-chloro-3,4-dihydro-3-oxo-N-[1-(2-phenylethyl)-4-piperidyl]-2H-1,4-benzoxazine-8-carboxamide

시약·촉매·용매 4

HCID 6228Dimethylformamide용매HCID 8028Tetrahydrofuran용매HCID 8471Triethylamine용매HCID 8857Ethyl Acetate용매

실험 절차

A solution of 4.56 g of 6-chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid in 100 ml of tetrahydrofuran and 10 ml of dimethylformamide is cooled to below 0° C. and 2.2 ml of triethylamine is added under stirring thereto. Further, 2.3 g of ethyl chlorocarbonate is added and the mixture is stirred at a temperature below 5° C. for an hour. To the resultant mixture is added 4.2 g of 4-amino-1-(2-phenylethyl)piperidine and the mixture stirred for 4 hours. After completion of the reaction, aqueous sodium hydrogen carbonate and ethyl acetate are added. The organic layer is separated, washed with water and dried over magnesium sulfate. The solvent is distilled off and the residue is recrystallized from ethyl acetate-ethanol to give 6-chloro-3,4-dihydro-3-oxo-N-[1-(2-phenylethyl)-4-piperidyl]-2H-1,4-benzoxazine-8-carboxamide, melting at 233°-235° C.

후처리

  1. stirringthe mixture is stirred at a temperature below 5° C. for an hour
  2. stirringthe mixture stirred for 4 hours
  3. additionare added
  4. customThe organic layer is separated
  5. washwashed with water
  6. dry with materialdried over magnesium sulfate
  7. distillationThe solvent is distilled off
  8. customthe residue is recrystallized from ethyl acetate-ethanol

출처 및 근거

ORD 기록
ord-0d12e930f8274abcb8b38029358f07eb
출처 데이터셋
uspto-grants-1990_01
특허 번호
US04892872

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