Acetic Anhydride → 2-(Acetylamino)-3,6-dihydro-4-methyl-6-(3-nitrophenyl)-1,5(2H)-pyrimidinedicarboxylic acid, diethyl ester

HRID 1789580ノート

反応式

HRID 1789580 の反応式
[NH2:1][C:2]1[N:3]([C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH:4]([C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([N+:20]([O-:22])=[O:21])[CH:15]=2)[C:5]([C:9]([O:11][CH2:12][CH3:13])=[O:10])=[C:6]([CH3:8])[N:7]=1.[C:28](OC(=O)C)(=[O:30])[CH3:29]>ClCCl.N1C=CC=CC=1.C(OCC)(=O)C>[C:28]([NH:1][CH:2]1[NH:7][C:6]([CH3:8])=[C:5]([C:9]([O:11][CH2:12][CH3:13])=[O:10])[CH:4]([C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([N+:20]([O-:22])=[O:21])[CH:15]=2)[N:3]1[C:23]([O:25][CH2:26][CH3:27])=[O:24])(=[O:30])[CH3:29]

参加物

6

反応物 2

HCID 7918Acetic AnhydrideHCID 139572692-Amino-4-methyl-6-(3-nitrophenyl)-1,5(6H)-pyrimidinedicarboxylic acid, diethyl ester

生成物 1

HCID 139572712-(Acetylamino)-3,6-dihydro-4-methyl-6-(3-nitrophenyl)-1,5(2H)-pyrimidinedicarboxylic acid, diethyl ester

試薬・触媒・溶媒 3

HCID 1049Pyridine溶媒HCID 6344Dichloromethane溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A suspension of 2-amino-4-methyl-6-(3-nitrophenyl)-1,5(6H)-pyrimidinedicarboxylic acid, diethyl ester (550 mg, 1.46 mmoles, see Example 2) in dichloromethane (5.0 ml) and pyridine (0.5 ml) was treated with acetic anhydride (0.3 ml) and the reaction was allowed to stir at room temperature for 1 hour. The colorless reaction mixture was diluted with ethyl acetate and was washed with 5% citric acid, sodium bicarbonate solution and brine. It was dried over anhydrous magnesium sulfate and evaporated to provide a colorless foam. Crystallization from ether-hexanes provided the title compound as a colorless solid, melting point 154.5°-156° C.

後処理

  1. washwas washed with 5% citric acid, sodium bicarbonate solution and brine
  2. dry with materialIt was dried over anhydrous magnesium sulfate
  3. customevaporated
  4. customto provide a colorless foam
  5. customCrystallization from ether-hexanes

出典と根拠

ORDレコード
ord-99317e12e9e34e248ca2fd650b9d5d3c
出典データセット
uspto-grants-1987_08
特許番号
US04689414

反応ノート

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