Methanol → 6-Amino-5-Fluoro-2-Methylbenzoxazole

HRID 9869ノート

反応式

HRID 9869 の反応式
[F:1][C:2]1[C:3]([N+:12]([O-])=O)=[CH:4][C:5]2[O:9][C:8]([CH3:10])=[N:7][C:6]=2[CH:11]=1.CO>O1CCCC1>[NH2:12][C:3]1[C:2]([F:1])=[CH:11][C:6]2[N:7]=[C:8]([CH3:10])[O:9][C:5]=2[CH:4]=1

参加物

4

反応物 2

HCID 887MethanolHCID 136277005-Fluoro-2-methyl-6-nitro-1,3-benzoxazole

生成物 1

HCID 219887666-Amino-5-Fluoro-2-Methylbenzoxazole

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

5-Fluoro-2-methyl-6-nitrobenzoxazole (16 g, 81.57 mMole), was dissolved in tetrahydrofuran (150 mL), and methanol (50 mL). Raney-Nickel which had been pre-washed with water (×3) and tetrahydrofuran (×3), was added and the mixture was then hydrogenated at room temperature and 50 psi of hydrogen. The reaction is complete in approximately 1.5 hours. After this period, the catalyst is filtered off and the solution concentrated under reduced pressure. The residue is triturated with heptane, cooled and the solid filtered off. Yield 12 g.

後処理

  1. washRaney-Nickel which had been pre-washed with water (×3) and tetrahydrofuran (×3)
  2. additionwas added
  3. customwas then hydrogenated at room temperature
  4. waitAfter this period
  5. filtrationthe catalyst is filtered off
  6. concentrationthe solution concentrated under reduced pressure
  7. customThe residue is triturated with heptane
  8. temperaturecooled
  9. filtrationthe solid filtered off

出典と根拠

ORDレコード
ord-0a44cb302d4a4d1a9a9ef3a7c37ee2cb
出典データセット
uspto-grants-2006_08
特許番号
US07091361B2

反応ノート

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