Sodium hydride → 2-(2-Chloro-5-cyanopyridin-4-ylamino)-N-methylbenzamide

HRID 1045901

反応式

HRID 1045901 の反応式
[H-].[Na+].[NH2:3][C:4]1[CH:13]=[CH:12][CH:11]=[CH:10][C:5]=1[C:6]([NH:8][CH3:9])=[O:7].Cl[C:15]1[CH:20]=[C:19]([Cl:21])[N:18]=[CH:17][C:16]=1[C:22]#[N:23]>C1COCC1.CCOC(C)=O>[Cl:21][C:19]1[CH:20]=[C:15]([NH:3][C:4]2[CH:13]=[CH:12][CH:11]=[CH:10][C:5]=2[C:6]([NH:8][CH3:9])=[O:7])[C:16]([C:22]#[N:23])=[CH:17][N:18]=1

参加物

6

反応物 3

HCID 24758Sodium hydrideHCID 3080722-Amino-N-methylbenzamideHCID 455880804,6-Dichloropyridine-3-carbonitrile

生成物 1

HCID 575169132-(2-Chloro-5-cyanopyridin-4-ylamino)-N-methylbenzamide収率 16.3%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

実験手順

Sodium hydride (2.345 g, 58.64 mmol) was added portionwise to a mixture of 2-amino-N-methylbenzamide (2.201 g, 14.66 mmol), in THF (40 mL) at room temperature under an atmosphere of nitrogen. The resulting suspension was stirred at room temperature for 30 minutes and then 4,6-dichloropyridine-3-carbonitrile (2.536 g, 14.66 mmol) was added portionwise (caution—exotherm and effervescence); the mixture was then heated overnight at 60° C. The mixture was allowed to cool to room temperature and then diluted with EtOAc (200 mL). The mixture was washed sequentially with water (200 mL), water (150 mL), and finally with a saturated solution of NaCl (200 mL). The organic layer was filtered and the residue washed with water followed by EtOAc and then allowed to dry to leave 2-[(2-chloro-5-cyanopyridin-4-yl)amino]-N-methylbenzamide (0.687 g, 16% yield). The filtrate was dried over MgSO4 and then evaporated to leave a solid. The solid was crystallised from MeOH/Et2O to afford a second crop of 2-[(2-chloro-5-cyanopyridin-4-yl)amino]-N-methylbenzamide (2.471 g, 59% yield); 1H NMR spectrum: (300 MHz, DMSO) δ 2.76 (3H, t), 7.10 (1H, d), 7.26-7.32 (1H, m), 7.57 (2H, dd), 7.72-7.74 (1H, m), 8.56 (1H, s), 8.68 (1H, d), 10.63 (1H, s); Mass spectrum: m/z (ESI+) (M+H)+=286.98 and 288.94.

後処理

  1. temperaturethe mixture was then heated overnight at 60° C
  2. temperatureto cool to room temperature
  3. washThe mixture was washed sequentially with water (200 mL), water (150 mL)
  4. filtrationThe organic layer was filtered
  5. washthe residue washed with water
  6. customto dry

出典と根拠

ORDレコード
ord-1df6df3868b54581b5373a5c39c56146
出典データセット
uspto-grants-2013_10
特許番号
US08569298B2

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