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Tin tetrachloride → Ethyl 6-bromo-2-(phenylsulfonyl)-1,2,3,4-tetrahydro-1-isoquinolinecarboxylate

HRID 2423528
ノート
印刷プレビュー

反応式

HRID 2423528 の反応式
[Sn](Cl)(Cl)(Cl)Cl.[Br:6][C:7]1[CH:8]=[C:9]([CH2:13][CH2:14][NH:15][S:16]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)(=[O:18])=[O:17])[CH:10]=[CH:11][CH:12]=1.Cl[CH:26](SC)[C:27]([O:29][CH2:30][CH3:31])=[O:28]>ClCCl.ClCCCl>[Br:6][C:7]1[CH:8]=[C:9]2[C:10](=[CH:11][CH:12]=1)[CH:26]([C:27]([O:29][CH2:30][CH3:31])=[O:28])[N:15]([S:16]([C:19]1[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=1)(=[O:18])=[O:17])[CH2:14][CH2:13]2.[Br:6][C:7]1[CH:12]=[CH:11][CH:10]=[C:9]2[C:8]=1[CH:26]([C:27]([O:29][CH2:30][CH3:31])=[O:28])[N:15]([S:16]([C:19]1[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=1)(=[O:18])=[O:17])[CH2:14][CH2:13]2
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 3

HCID 24287Tin tetrachlorideHCID 10877535Ethyl 2-chloro-2-(methylsulfanyl)acetateHCID 59321588N-[2-(3-bromophenyl)ethyl]benzenesulfonamide

生成物 2

HCID 59321554Ethyl 6-bromo-2-(phenylsulfonyl)-1,2,3,4-tetrahydro-1-isoquinolinecarboxylate収率 79%HCID 59321590Ethyl 8-bromo-2-(phenylsulfonyl)-1,2,3,4-tetrahydro-1-isoquinolinecarboxylate
収率 19%

試薬・触媒・溶媒 2

HCID 111,2-Dichloroethane溶媒HCID 6344Dichloromethane溶媒

実験手順

Tin(IV)chloride (6.67 mL of a 1 M solution in dichloromethane, 6.67 mmol) was added to N-[2-(3-bromophenyl)ethyl]benzenesulfonamide (1.08 g, 3.17 mmol) and ethyl chloro(methylthio)acetate (1.07 g, 6.35 mmol) in 1,2-dichloroethane (11 mL) under argon and the reaction was heated at reflux for 3 hours. After cooling, the mixture was poured into ice water and extracted with ethyl acetate. The organic layer was washed with saturated sodium bicarbonate and brine, dried over anhydrous magnesium sulfate, then filtered and concentrated. The residue was purified by silica gel chromatography eluting with 1:4 ethyl acetate:hexanes to give 1.07 g (79%) of ethyl 6-bromo-2-(phenylsulfonyl)-1,2,3,4-tetrahydro-1-isoquinolinecarboxylate and 255.6 mg (19%) of ethyl 8-bromo-2-(phenylsulfonyl)-1,2,3,4-tetrahydro-1-isoquinolinecarboxylate as oils.

後処理

  1. temperaturethe reaction was heated
  2. temperatureat reflux for 3 hours
  3. temperatureAfter cooling
  4. extractionextracted with ethyl acetate
  5. washThe organic layer was washed with saturated sodium bicarbonate and brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe residue was purified by silica gel chromatography
  10. washeluting with 1:4 ethyl acetate

出典と根拠

ORDレコード
ord-cf374c60b32f45cfa6cf4a4d05e4f2ab
出典データセット
uspto-grants-2011_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07960552B2

反応ノート

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