1,2-Dibromoethane → t-butyl 4-(methylsulfonyl)-3,4,6,7,9,10-hexahydro[1,4]oxazino[2,3-h][3]benzazepine-8(2H)-carboxylate

HRID 1668573ノート

反応式

HRID 1668573 の反応式
[OH:1][C:2]1[C:19]([NH:20][S:21]([CH3:24])(=[O:23])=[O:22])=[CH:18][C:5]2[CH2:6][CH2:7][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:9][CH2:10][C:4]=2[CH:3]=1.Br[CH2:26][CH2:27]Br.C(=O)([O-])[O-].[K+].[K+]>CC(C)=O.O>[CH3:24][S:21]([N:20]1[C:19]2=[CH:18][C:5]3[CH2:6][CH2:7][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:9][CH2:10][C:4]=3[CH:3]=[C:2]2[O:1][CH2:27][CH2:26]1)(=[O:23])=[O:22]

参加物

5

反応物 3

HCID 78391,2-DibromoethaneHCID 11430Potassium CarbonateHCID 591504841,1-dimethylethyl 7-hydroxy-8-[(methylsulfonyl)amino]-1,2,4,5-tetrahydro-3H-3-benzazepine-3-carboxylate

生成物 1

HCID 58494859t-butyl 4-(methylsulfonyl)-3,4,6,7,9,10-hexahydro[1,4]oxazino[2,3-h][3]benzazepine-8(2H)-carboxylate

試薬・触媒・溶媒 1

HCID 18366337Propan-2-one--water (1/1)溶媒

実験手順

1,1-dimethylethyl 7-hydroxy-8-[(methylsulfonyl)amino]-1,2,4,5-tetrahydro-3H-3-benzazepine-3-carboxylate (0.55 g) and 1,2-dibromoethane (0.23 ml) in the presence of potassium carbonate (0.4 g) were heated in acetone/water (1/1, 8 ml) for 6 h at reflux. Volatiles were evaporated under reduced pressure, the residue was partitioned between aqueous NaHCO3 and DCM. The organic layer was collected and the aqueous phase extracted twice with DCM. The combined organic layers were concentrated and submitted to column chromatography to provide the title compound (0.75 mmol) as a white slightly hygroscopic solid. MS (m/z): 383 [MH]+.

後処理

  1. temperatureat reflux
  2. customVolatiles were evaporated under reduced pressure
  3. customthe residue was partitioned between aqueous NaHCO3 and DCM
  4. customThe organic layer was collected
  5. extractionthe aqueous phase extracted twice with DCM
  6. concentrationThe combined organic layers were concentrated

出典と根拠

ORDレコード
ord-4eae36581c734448984006f544313666
出典データセット
uspto-grants-2011_08
特許番号
US07989444B2

反応ノート

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