Pyridine → 6-dimethylaminocarbonyl-5-methyl-2-phenyl-3-propargyl-4(3H)-pyrimidinone

HRID 1452

反応式

HRID 1452 の反応式
[C:1]([C:4]1[N:9]=[C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[N:7]([CH2:16][C:17]#[CH:18])[C:6](=[O:19])[C:5]=1[CH3:20])([OH:3])=O.Cl.[CH3:22][NH:23][CH3:24].N1C=CC=CC=1.C1(N=C=NC2CCCCC2)CCCCC1>C1COCC1>[CH3:22][N:23]([CH3:24])[C:1]([C:4]1[N:9]=[C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[N:7]([CH2:16][C:17]#[CH:18])[C:6](=[O:19])[C:5]=1[CH3:20])=[O:3]

参加物

6

反応物 4

HCID 1049PyridineHCID 10473Dimethylamine, hydrochlorideHCID 10868DicyclohexylcarbodiimideHCID 196907156-carboxy-5-methyl-2-phenyl-3-propargyl-4(3H)-pyrimidinone

生成物 1

HCID 196906856-dimethylaminocarbonyl-5-methyl-2-phenyl-3-propargyl-4(3H)-pyrimidinone収率 32%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a stirred solution of 0.87 g (3.2 mmol) of crude 6-carboxy-5-methyl-2-phenyl-3-propargyl-4(3H)-pyrimidinone, 0.32 g (3.9 mmol) of dimethylamine hydrochloride and 2 mL of pyridine in 10 mL of THF was added 0.74 g (3.6 mmol) of solid N,N'-dicyclohexylcarbodiimide. The mixture was stirred at room temperature for 4 days and filtered to remove insoluble material. The filtrate was diluted with 150 mL of ethyl acetate, washed with 50 mL of 5% aqueous HCl and 50 mL of saturated aqueous sodium bicarbonate and dried over MgSO4. Removal of the solvent left 0.40 g of crude product which was purified by flash chromatography on a 30 g column of silica gel, eluted with 60, 80 and 100% ethyl acetate in hexanes to furnish 0.30 g (32%) of 6-dimethylaminocarbonyl-5-methyl-2-phenyl-3-propargyl-4(3H)-pyrimidinone (compound 19), mp 137°-140° C. 1H-NMR (CDCl3) δ 2.15(3H,s), 2.40(1H,t), 3.00(3H,s), 3.10(3H,s), 4.65(2H,d), 7.55(3H,m), 7.70(2H,m).

後処理

  1. filtrationfiltered
  2. customto remove insoluble material
  3. additionThe filtrate was diluted with 150 mL of ethyl acetate
  4. washwashed with 50 mL of 5% aqueous HCl and 50 mL of saturated aqueous sodium bicarbonate
  5. dry with materialdried over MgSO4
  6. customRemoval of the solvent
  7. waitleft 0.40 g of crude product which
  8. customwas purified by flash chromatography on a 30 g column of silica gel
  9. washeluted with 60, 80 and 100% ethyl acetate in hexanes

出典と根拠

ORDレコード
ord-21393e26ab0b4c64a67d4dbe4b4c6328
出典データセット
uspto-grants-1998_03
特許番号
US05726124

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