Methanol → 3-(4-Fluoro-phenyl)-5-[2-(2-fluoro-phenyl)-2H-pyrazol-3-yl]-benzo[c]isoxazole

HRID 59817

反応式

HRID 59817 の反応式
[OH-].[Na+].CO.[F:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=1[N:12]1[C:16]([C:17]2[CH:22]=[CH:21][C:20]([N+:23]([O-:25])=O)=[CH:19][CH:18]=2)=[CH:15][CH:14]=[N:13]1.[F:26][C:27]1[CH:32]=[CH:31][C:30]([CH2:33]C#N)=[CH:29][CH:28]=1>O>[F:26][C:27]1[CH:32]=[CH:31][C:30]([C:33]2[O:25][N:23]=[C:20]3[CH:21]=[CH:22][C:17]([C:16]4[N:12]([C:7]5[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=5[F:5])[N:13]=[CH:14][CH:15]=4)=[CH:18][C:19]=23)=[CH:29][CH:28]=1

参加物

6

反応物 4

HCID 887MethanolHCID 14798Sodium HydroxideHCID 68016Benzeneacetonitrile, 4-fluoro-HCID 900327651-(2-fluoro-phenyl)-5-(4-nitro-phenyl)-1H-pyrazole2 回

生成物 1

HCID 730526873-(4-Fluoro-phenyl)-5-[2-(2-fluoro-phenyl)-2H-pyrazol-3-yl]-benzo[c]isoxazole収率 70%

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

A mixture of sodium hydroxide (282 mg, 7.06 mmol) and MeOH (2.5 ml) was allowed to stir for 1 h at room temperature, 1-(2-fluoro-phenyl)-5-(4-nitro-phenyl)-1H-pyrazole (intermediate B) (200 mg, 706 μmol) and commercially available 2-(4-fluoro-phenyl)-acetonitrile (143 mg, 127 μl, 1.06 mmol) were added, and the reaction mixture was allowed to stir for 2 h at 60° C. The reaction mixture was poured into water (20 ml) and extracted with diethyl ether (2×40 ml). The combined organic layers were washed with brine (30 ml), dried (MgSO4) and evaporated. The crude product was further purified by column chromatography on silica gel (toluene/ethyl acetate 95:5) followed by crystallization (ethyl acetate/heptane) to yield the title compound as a light yellow solid (184 mg, 70%), MS (ISP) m/z=374.1 [(M+H)+], mp 171° C.

後処理

  1. stirringto stir for 2 h at 60° C
  2. extractionextracted with diethyl ether (2×40 ml)
  3. washThe combined organic layers were washed with brine (30 ml)
  4. dry with materialdried (MgSO4)
  5. customevaporated
  6. customThe crude product was further purified by column chromatography on silica gel (toluene/ethyl acetate 95:5)
  7. customfollowed by crystallization (ethyl acetate/heptane)

出典と根拠

ORDレコード
ord-3cfc676d05e341a0b69c0db6b4916fd7
出典データセット
uspto-grants-2016_09
特許番号
US09440962B2

関連ノート

読み込み中…