Water → 2-Nitro-4-(1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-5-yl)benzonitrile

HRID 872589

反応式

HRID 872589 の反応式
Cl[C:2]1[CH:9]=[CH:8][C:5]([C:6]#[N:7])=[C:4]([N+:10]([O-:12])=[O:11])[CH:3]=1.[O:13]1[CH2:18][CH2:17][CH2:16][CH2:15][CH:14]1[N:19]1[C:23](B2OC(C)(C)C(C)(C)O2)=[CH:22][CH:21]=[N:20]1.C(=O)([O-])[O-].[Na+].[Na+].O>CN(C=O)C.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.Cl[Pd]Cl>[N+:10]([C:4]1[CH:3]=[C:2]([C:23]2[N:19]([CH:14]3[CH2:15][CH2:16][CH2:17][CH2:18][O:13]3)[N:20]=[CH:21][CH:22]=2)[CH:9]=[CH:8][C:5]=1[C:6]#[N:7])([O-:12])=[O:11]

参加物

7

反応物 4

HCID 962Water2 回HCID 10340Sodium CarbonateHCID 969244-Chloro-2-nitrobenzonitrileHCID 115872081-(tetrahydro-2H-pyran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

生成物 1

HCID 671715292-Nitro-4-(1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-5-yl)benzonitrile収率 72.4%

試薬・触媒・溶媒 2

HCID 6102075Dichlorobis(triphenylphosphine)palladium触媒HCID 6228Dimethylformamide溶媒

反応条件

温度
90 °C

実験手順

To a solution of 4-chloro-2-nitrobenzonitrile (15 g, 82 mmol) and 1-(tetrahydro-2H-pyran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (27.4 g, 99 mmol) in 300 ml of DMF were added bis(triphenylphosphine)palladium (II) chloride (1.12 g; 1.64 mmol), sodium carbonate (22.7 g; 0.16 mol) and water (30 ml). The reaction mixture was heated at 90° C. for 4.5 h, cooled and poured into 500 ml of water. The water phase was extracted twice with EtOAc, and the combined organic fractions were washed with saturated NaHCO3— solution and brine, dried over Na2SO4 and evaporated. The evaporation residual was suspended to EtOH (100 ml) and the remaining solids were filtered to give 17.7 g (72%) of the title compound. 1H-NMR (400 MHz; d6-DMSO): δ 1.52-1.68 (m, 3H), 1.78-1.87 (m, 1H), 1.91-2.00 (m, 1H), 2.31-2.47 (m, 1H), 3.67-3.76 (m, 1H), 3.99-4.06 (m, 1H), 5.32 (dd, 1H), 6.84 (d, 1H), 7.69 (d, 1H), 8.13 (dd, 1H), 8.32 (d, 1H), 8.60 (d, 1H).

後処理

  1. temperaturecooled
  2. extractionThe water phase was extracted twice with EtOAc
  3. washthe combined organic fractions were washed with saturated NaHCO3— solution and brine
  4. dry with materialdried over Na2SO4
  5. customevaporated
  6. filtrationthe remaining solids were filtered

出典と根拠

ORDレコード
ord-8733ec5d404f4503b23d1d61c2000b40
出典データセット
uspto-grants-2015_03
特許番号
US08975254B2

関連ノート

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