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Dimethylformamide → N-(4-amino-5-cyano-6-propylpyridin-2-yl)acetamide

HRID 1364526
ノート
印刷プレビュー

反応式

HRID 1364526 の反応式
[NH2:1][C:2]1[C:7]([C:8]#[N:9])=[C:6](Br)[N:5]=[C:4]([NH:11][C:12](=[O:14])[CH3:13])[CH:3]=1.[C:15]1(C)[CH:20]=CC=C[C:16]=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.CN(C=O)C.[I-].C([Zn+])CC>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(OCC)(=O)C.O>[NH2:1][C:2]1[C:7]([C:8]#[N:9])=[C:6]([CH2:16][CH2:15][CH3:20])[N:5]=[C:4]([NH:11][C:12](=[O:14])[CH3:13])[CH:3]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

8

反応物 4

HCID 6228DimethylformamideHCID 80271Tri-o-tolylphosphineHCID 11557905N-(4-Amino-6-bromo-5-cyano-pyridin-2-yl)-acetamideHCID 178455873HCID 178455873、化合物

生成物 1

HCID 11680140N-(4-amino-5-cyano-6-propylpyridin-2-yl)acetamide収率 159%

試薬・触媒・溶媒 3

HCID 167845
palladium(II) acetate
触媒
HCID 962Water溶媒
HCID 8857Ethyl Acetate溶媒

反応条件

温度
90 °C

実験手順

To 128 mg of N-(4-amino-6-bromo-5-cyano-pyridin-2-yl)-acetamide (Example 65A), 6 mg (0.027 mmol) of palladium(II)acetate, and 30 mg (0.098 mmol) of tri(o-tolyl)phosphine was added 0.5 mL of DMF. The mixture was put under N2 and stirred, then 2.0 mL of the n-propylzinc iodide solution was added via syringe. The mixture was heated at 90° C. for 10 minutes then poured into a stirred mixture of 10 mL water and 10 mL ethyl acetate. The metal salts were filtered away through diatomaceous earth, then the layers were separated. The organic layer was extracted with water (2×10 mL), and brine (1×10 mL), dried over MgSO4, filtered, and concentrated to a solid. This was purified via silica gel chromatography, eluting with 50:50 hexanes:ethyl acetate and loading as a solution in hot ethyl acetate to provide 34 mg (31%) of a white solid. 1H NMR (300 MHz, d6-DMSO) δ 10.29 (s, 1H), 7.39 (s, 1H), 6.82 (s, 2H), 2.63 (m, 2H), 2.07 (m, 3H), 1.67 (m, 2H), 0.92 (t, 3H, J=7.5 Hz); MS (ESI) m/e 219 (M+H)+; m/e 217 (M−H)−.

後処理

  1. filtrationThe metal salts were filtered away through diatomaceous earth
  2. customthe layers were separated
  3. extractionThe organic layer was extracted with water (2×10 mL), and brine (1×10 mL)
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated to a solid
  7. customThis was purified via silica gel chromatography
  8. washeluting with 50:50 hexanes

出典と根拠

ORDレコード
ord-869d449a48bb4f7b934b1077e57ca5ed
出典データセット
uspto-grants-2011_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07888374B2

反応ノート

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