Acetic Anhydride → N-[6-(2,6-dichlorophenyl)-8-methyl-7-oxo-7H,8H-pyrido[2,3-d]pyrimidin-2-yl]acetamide

HRID 53624

反応式

HRID 53624 の反応式
[NH2:1][C:2]1[N:3]=[CH:4][C:5]2[CH:11]=[C:10]([C:12]3[C:17]([Cl:18])=[CH:16][CH:15]=[CH:14][C:13]=3[Cl:19])[C:9](=[O:20])[N:8]([CH3:21])[C:6]=2[N:7]=1.[C:22](OC(=O)C)(=[O:24])[CH3:23]>>[Cl:18][C:17]1[CH:16]=[CH:15][CH:14]=[C:13]([Cl:19])[C:12]=1[C:10]1[C:9](=[O:20])[N:8]([CH3:21])[C:6]2[N:7]=[C:2]([NH:1][C:22](=[O:24])[CH3:23])[N:3]=[CH:4][C:5]=2[CH:11]=1

参加物

3

反応物 2

HCID 7918Acetic AnhydrideHCID 53278642-amino-6-(2,6-dichlorophenyl)-8-methyl-7H,8H-pyrido[2,3-d]pyrimidin-7-one

生成物 1

HCID 5327865N-[6-(2,6-dichlorophenyl)-8-methyl-7-oxo-7H,8H-pyrido[2,3-d]pyrimidin-2-yl]acetamide

反応条件

温度
25 °C

実験手順

A mixture of 64.2 mg (0.20 mmol) of 2-amino-6-(2,6-dichlorophenyl)-8-methyl-pyrido[2,3-d]pyrimidin-7(8H)-one (from Example 12) and 1 mL of acetic anhydride was heated to reflux. The resulting solution was maintained at reflux for 20 minutes and concentrated at atmospheric pressure to about 0.25 mL volume. The solution was cooled to 25° C. and diluted with diethyl ether (1 mL). The separated crystals were filtered and washed with diethyl ether to provide N-[6-(2,6-dichlorophenyl)-8-methyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-yl]acetamide, wt 44.0 mg; mp 258°-260° C.; MS (CI) 363 (M+ +1).

後処理

  1. temperaturewas heated to reflux
  2. temperatureThe resulting solution was maintained
  3. temperatureat reflux for 20 minutes
  4. concentrationconcentrated at atmospheric pressure to about 0.25 mL volume
  5. additiondiluted with diethyl ether (1 mL)
  6. filtrationThe separated crystals were filtered
  7. washwashed with diethyl ether

出典と根拠

ORDレコード
ord-26a020e1e80a4d4c857431a3c9c2b02f
出典データセット
uspto-grants-1997_04
特許番号
US05620981

関連ノート

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