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2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → methyl (5R)-3-[4-(1,1-dioxido-2,3-dihydro-4H-1,4-thiazin-4-yl)-3,5-difluorophenyl]-2-oxo-5-oxazolidinecarboxylate

HRID 1991298
ノート
印刷プレビュー

反応式

HRID 1991298 の反応式
[O:1]=[S:2]1(=[O:26])[CH2:7][CH2:6][N:5]([C:8]2[C:13]([F:14])=[CH:12][C:11]([N:15]3[CH2:19][C@H:18]([C:20]([O:22][CH3:23])=[O:21])[O:17][C:16]3=[O:24])=[CH:10][C:9]=2[F:25])[CH2:4][CH2:3]1.ClC1C(=O)C(C#N)=C(C#N)C(=O)C=1Cl.[O-]S([O-])=O.[Na+].[Na+]>O1CCOCC1.O>[O:26]=[S:2]1(=[O:1])[CH:3]=[CH:4][N:5]([C:8]2[C:13]([F:14])=[CH:12][C:11]([N:15]3[CH2:19][C@H:18]([C:20]([O:22][CH3:23])=[O:21])[O:17][C:16]3=[O:24])=[CH:10][C:9]=2[F:25])[CH2:6][CH2:7]1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 67752,3-Dichloro-5,6-dicyano-1,4-benzoquinoneHCID 24437Sodium SulfiteHCID 68489310methyl (5R)-3-[4-(1,1-dioxidothiomorpholin-4-yl)-3,5-difluorophenyl]-2-oxo-5-oxazolidinecarboxylate

生成物 1

HCID 68490087methyl (5R)-3-[4-(1,1-dioxido-2,3-dihydro-4H-1,4-thiazin-4-yl)-3,5-difluorophenyl]-2-oxo-5-oxazolidinecarboxylate収率 38.6%

試薬・触媒・溶媒 2

HCID 962
Water
溶媒
HCID 312751,4-Dioxane溶媒

実験手順

A solution of methyl(5R)-3-[4-(1,1-dioxidothiomorpholin-4-yl)-3,5-difluorophenyl]-2-oxo-5-oxazolidinecarboxylate (Step 2, 0.73 g, 1.87 mmol) and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) (1.27 g, 5.6 mmol) in dioxane (9 mL) is heated to 100° C. for two days. The solution is cooled and treated with 20 mL of 10% aqueous Na2SO3 and stirred for 30 minutes. The solution is then diluted with water and extracted three times with ethyl acetate. The combined organic phases are washed with satd NaHCO3 and saline and dried (MgSO4), filtered and concentrated. The crude residue is purified by column chromatography (0→5% ethyl ether-dichloromethane) to provide the title compound (0.28 g, 38%); 1H NMR (300 MHz, CDCl3): δ 3.31-3.35 (m, 2H), 3.89 (s, 3H), 4.00-4.15 (m, 3H), 4.25 (t, 1H), 5.11 (m, 1H), 5.45 (d, 1H), 6.54 (d, 1H), 7.29 (d, 2H).

後処理

  1. temperatureThe solution is cooled
  2. extractionextracted three times with ethyl acetate
  3. washThe combined organic phases are washed with satd NaHCO3 and saline
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude residue is purified by column chromatography (0→5% ethyl ether-dichloromethane)

出典と根拠

ORDレコード
ord-40108092d7d54b11bdce6cfdd06054da
出典データセット
uspto-grants-2010_01
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07645781B2

反応ノート

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