Sodium Thiosulfate → tert-butyl 7-bromo-2-methyl-8-(1-methylethyl)-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate

HRID 1404993노트

반응식

HRID 1404993 반응식
[CH3:1][CH:2]1[CH2:8][N:7]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:6][C:5]2[S:16][CH:17]=[C:18]([CH:19]([CH3:21])[CH3:20])[C:4]=2[O:3]1.[Br:22]N1C(=O)CCC1=O.S([O-])([O-])(=O)=S.[Na+].[Na+]>C(#N)C>[Br:22][C:17]1[S:16][C:5]2[CH2:6][N:7]([C:9]([O:11][C:12]([CH3:15])([CH3:13])[CH3:14])=[O:10])[CH2:8][CH:2]([CH3:1])[O:3][C:4]=2[C:18]=1[CH:19]([CH3:21])[CH3:20]

참가 물질

5

반응물 3

HCID 24477Sodium ThiosulfateHCID 67184N-bromobutanimideHCID 67959183HCID 67959183, 화합물

생성물 1

HCID 67959274tert-butyl 7-bromo-2-methyl-8-(1-methylethyl)-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate수율 83.3%

시약·촉매·용매 1

HCID 6342Acetonitrile용매

실험 절차

A solution of tert-butyl 2-methyl-8-(1-methylethyl)-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate (763 mg) obtained in Example 10, steps 1 and 2, N-bromosuccinimide (458 mg) and acetonitrile (6 mL) was stirred at room temperature for 2 hr, 10% aqueous sodium thiosulfate solution was added, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (solvent gradient; 3→7% ethyl acetate/hexane) to give the title compound (797 mg, 83%) as an oil.

후처리

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (solvent gradient; 3→7% ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-0e09ec7ceb504b94bbf129f3dc3b4ef7
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08916549B2

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