Diisopropylamine → HCID 76765796、化合物

HRID 69398ノート

反応式

HRID 69398 の反応式
[CH2:1]([NH:5][C:6](=[O:31])[C:7]1[CH:12]=[CH:11][C:10]([C:13]2[CH2:17][C:16]([C:22]3[CH:27]=[C:26]([Cl:28])[CH:25]=[C:24]([Cl:29])[CH:23]=3)([C:18]([F:21])([F:20])[F:19])[O:15][N:14]=2)=[CH:9][C:8]=1[CH3:30])[CH2:2][CH2:3][CH3:4].C(NC(C)C)(C)C.C([Li])CCC>O1CCCC1>[CH2:1]([NH:5][C:6](=[O:31])[C:7]1[CH:12]=[CH:11][C:10]([C:13](=[N:14][OH:15])[CH:17]=[C:16]([C:22]2[CH:27]=[C:26]([Cl:28])[CH:25]=[C:24]([Cl:29])[CH:23]=2)[C:18]([F:19])([F:21])[F:20])=[CH:9][C:8]=1[CH3:30])[CH2:2][CH2:3][CH3:4]

参加物

5

反応物 3

HCID 7912DiisopropylamineHCID 67295194HCID 67295194、化合物HCID 178418339Butyllithium

生成物 1

HCID 76765796HCID 76765796、化合物収率 70%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
0 °C

実験手順

To a solution of N-butyl-4-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-benzamide (made as described in EP 1,731,512) (1670 mg, 4.13 mmol) and N,N-diisopropylamine (880 mg, 8.69 mmol) in dry tetrahydrofuran (10 ml) was added n-butyl lithium (“n-BuLi”) (1.55M in hexane) (5.6 ml, 8.69 mmol) at −90° C. The reaction mixture was allowed to warm to 0° C. over a period of 2 hours and quenched by addition of aqueous ammonium chloride (saturated). The mixture was extracted several times with diethyl ether. The combined organic extracts were dried over magnesium sulfate and concentrated. The residue was purified by chromatography on silica gel (eluent: hexane/ethyl acetate 2:1) to give N-butyl-4-[3-(3,5-dichloro-phenyl)-4,4,4-trifluoro-1-hydroxyimino-but-2-enyl]-2-methyl-benzamide (1180 mg, 70% yield) as a yellow resin. 1H-NMR (CDCl3, 300 MHz): 8.52 (bs, 1H), 7.45-7.36 (m, 6H), 6.75 (s, 1H), 5.81 (m, 1H), 3.46-3.43 (m, 2H), 2.47 (s, 3H), 1.54-1.39 (m, 4H), 0.97 (t, 3H) ppm.

後処理

  1. customquenched by addition of aqueous ammonium chloride (saturated)
  2. extractionThe mixture was extracted several times with diethyl ether
  3. dry with materialThe combined organic extracts were dried over magnesium sulfate
  4. concentrationconcentrated
  5. customThe residue was purified by chromatography on silica gel (eluent: hexane/ethyl acetate 2:1)

出典と根拠

ORDレコード
ord-e244720a0e774435a15b3bc3d2ca2a8c
出典データセット
uspto-grants-2014_09
特許番号
US08822502B2

反応ノート

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