Methanol → 2-[2-(2,6-difluoro-3,5-dimethoxyphenyl)ethyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazine

HRID 1052311ノート

反応式

HRID 1052311 の反応式
[F:1][C:2]1[C:7]([O:8][CH3:9])=[CH:6][C:5]([O:10][CH3:11])=[C:4]([F:12])[C:3]=1[C:13]#[C:14][C:15]1[N:16]=[C:17]2[CH:23]=[CH:22][N:21]([S:24]([C:27]3[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=3)(=[O:26])=[O:25])[C:18]2=[N:19][CH:20]=1.CO>O1CCCC1.[Pd]>[F:1][C:2]1[C:7]([O:8][CH3:9])=[CH:6][C:5]([O:10][CH3:11])=[C:4]([F:12])[C:3]=1[CH2:13][CH2:14][C:15]1[N:16]=[C:17]2[CH:23]=[CH:22][N:21]([S:24]([C:27]3[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=3)(=[O:26])=[O:25])[C:18]2=[N:19][CH:20]=1

参加物

5

反応物 2

HCID 887MethanolHCID 899632732-[(2,6-difluoro-3,5-dimethoxyphenyl)ethynyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazine

生成物 1

HCID 899629792-[2-(2,6-difluoro-3,5-dimethoxyphenyl)ethyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazine収率 81%

試薬・触媒・溶媒 2

HCID 23938Palladium触媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a stirred solution of 2-[(2,6-difluoro-3,5-dimethoxyphenyl)ethynyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazine (490 mg, 1.08 mmol) in tetrahydrofuran (8 mL)/methanol (10 mL), Pd/C (10% w/w, 365 mg, 0.343 mmol) was added. The resulting mixture was stirred under H2 at ambient temperature. After 24 hr, the catalyst was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified on silica gel (eluting with 0 to 60% EtOAc in hexanes) to give the desired product (400 mg, 81%). LCMS calculated for C22H19F2N3O4S (M+H)+: m/z=460.1. Found: 460.1.

後処理

  1. customthe catalyst was removed by filtration
  2. concentrationthe filtrate was concentrated under reduced pressure
  3. customThe residue was purified on silica gel (eluting with 0 to 60% EtOAc in hexanes)

出典と根拠

ORDレコード
ord-ac1a900fb78a4732a928a4b2060316ee
出典データセット
uspto-grants-2016_07
特許番号
US09388185B2

反応ノート

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