Methyl iodide → 2,3-Dimethyl-6-phenyl-5-(prop-2-yn-1-yl)pyrimidin-4(3H)-one

HRID 488337

反応式

HRID 488337 の反応式
[CH3:1][C:2]1[NH:7][C:6](=[O:8])[C:5]([CH2:9][C:10]#[CH:11])=[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[N:3]=1.[C:18](=O)([O-])[O-].[K+].[K+].CI.C(C(C)=O)C>O>[CH3:1][C:2]1[N:7]([CH3:18])[C:6](=[O:8])[C:5]([CH2:9][C:10]#[CH:11])=[C:4]([C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)[N:3]=1

参加物

6

反応物 4

HCID 6328Methyl iodideHCID 6569Methyl Ethyl KetoneHCID 11430Potassium CarbonateHCID 1356894052-methyl-6-phenyl-5-propargyl-4(3H)-pyrimidinone

生成物 1

HCID 200851942,3-Dimethyl-6-phenyl-5-(prop-2-yn-1-yl)pyrimidin-4(3H)-one収率 87.6%

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

A mixture of 0.76 g (3.4 mmol) of 2-methyl-6-phenyl-5-propargyl-4(3H)-pyrimidinone, 0.72 g (5.2 mmol) of anhydrous potassium carbonate, 0.32 mL (5.1 mmol) of methyl iodide and 20 mL of methyl ethyl ketone was heated at reflux for 6 h. The mixture was cooled, diluted with 40 mL of water and extracted with two 60 mL portions of ethyl acetate. The ethyl acetate extracts were dried and rotovaped to leave 0.75 g of crude product. This material was purified by flash chromatography on silica gel to afford 0.71 g of 2,3-dimethyl-6-phenyl-5-propargyl-4(3H)-pyrimidinone as a white solid, mp 142°-144° C., 1H-NMR (CDCl3) δ 2.10(3H,t,J=4), 2.60(3H,s), 3.40(2H,d,J=4), 3.60(3H,s), 7.45(3H,m), 7.65(2H,m); IR(nujol) 3200, 1650 cm-1.

後処理

  1. temperaturewas heated
  2. temperatureat reflux for 6 h
  3. temperatureThe mixture was cooled
  4. extractionextracted with two 60 mL portions of ethyl acetate
  5. dry with materialThe ethyl acetate extracts were dried
  6. customto leave 0.75 g of crude product
  7. customThis material was purified by flash chromatography on silica gel

出典と根拠

ORDレコード
ord-0a6d81a368ce488fbceed544c8525c07
出典データセット
uspto-grants-1994_03
特許番号
US05298481

関連ノート

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