Cesium carbonate → 6-[4-(2-Bromo-5-fluorophenyl)-2-hydroxy-4-methyl-2-trifluoromethylvaleroylamino]-4-methyl-2,3-benzoxazin-1-one

HRID 1374623

反応式

HRID 1374623 の反応式
[F:1][C:2]([Si](C)(C)C)([F:4])[F:3].C(=O)([O-])[O-].[Cs+].[Cs+].[Br:15][C:16]1[CH:21]=[CH:20][C:19]([F:22])=[CH:18][C:17]=1[C:23]([CH3:43])([CH3:42])[CH2:24][C:25](=[O:41])[C:26]([NH:28][C:29]1[CH:30]=[CH:31][C:32]2[C:37](=[O:38])[O:36][N:35]=[C:34]([CH3:39])[C:33]=2[CH:40]=1)=[O:27].[SiH4]>CN(C=O)C.C(OCC)(=O)C>[Br:15][C:16]1[CH:21]=[CH:20][C:19]([F:22])=[CH:18][C:17]=1[C:23]([CH3:43])([CH3:42])[CH2:24][C:25]([OH:41])([C:2]([F:4])([F:3])[F:1])[C:26]([NH:28][C:29]1[CH:30]=[CH:31][C:32]2[C:37](=[O:38])[O:36][N:35]=[C:34]([CH3:39])[C:33]=2[CH:40]=1)=[O:27]

参加物

7

反応物 4

HCID 10796Cesium carbonateHCID 23953SilaneHCID 552549(Trifluoromethyl)trimethylsilaneHCID 21908380HCID 21908380、化合物

生成物 1

HCID 219083066-[4-(2-Bromo-5-fluorophenyl)-2-hydroxy-4-methyl-2-trifluoromethylvaleroylamino]-4-methyl-2,3-benzoxazin-1-one収率 68.7%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

0.23 ml (1.25 mmol) of trifluoromethyl(trimethyl)silane and 256 mg (0.79 mmol) of cesium carbonate are added at 0° C. to a solution of 290 mg (0.63 mmol) of 6-[4-(2-bromo-5-fluorophenyl)-4-methyl-2-oxovaleroylamino]-4-methyl-2,3-benzoxazin-1-one in 7 ml of DMF. After 24 hours, the same amount of silane and base are added and stirred for another 24 hours at room temperature. The batch is diluted with 150 ml of ethyl acetate, washed with water and saturated NaCl, dried (Na2SO4) and concentrated by evaporation in a vacuum. Purification by column chromatography of the residue on silica gel yields 230 mg of product.

後処理

  1. washwashed with water and saturated NaCl
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated by evaporation in a vacuum
  4. customPurification by column chromatography of the residue on silica gel

出典と根拠

ORDレコード
ord-0308a47e6c3442bca614be210a71472d
出典データセット
uspto-grants-2007_01
特許番号
US07166592B2

関連ノート

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