Benzene → Acetic Anhydride

HRID 328592

反応式

HRID 328592 の反応式
[C:1]([C:4]1[C:5](=[O:15])[O:6][C:7]([OH:14])=[C:8]([C:11](=[O:13])[CH3:12])[C:9]=1[OH:10])(=[O:3])[CH3:2].C1C=CC=CC=1.C1(C)C=CC=CC=1.C[OH:30]>S(=O)(=O)(O)O>[C:1]([C:4]1[C:5](=[O:15])[O:6][C:7]([OH:14])=[C:8]([C:11](=[O:13])[CH3:12])[C:9]=1[OH:10])(=[O:3])[CH3:2].[CH2:8]([C:7]([OH:6])=[O:14])[C:9]([CH2:4][C:5]([OH:15])=[O:30])=[O:10].[C:5]([O:6][C:7](=[O:14])[CH3:8])(=[O:15])[CH3:4]

参加物

8

反応物 4

HCID 241BenzeneHCID 887MethanolHCID 1140TolueneHCID 1354659693,5-Diacetyl-2,6-dihydroxy-4h-pyran-4-one

生成物 3

HCID 7918Acetic AnhydrideHCID 68328Acetonedicarboxylic acidHCID 1354659693,5-Diacetyl-2,6-dihydroxy-4h-pyran-4-one

試薬・触媒・溶媒 1

HCID 1118Sulfuric Acid溶媒

実験手順

The starting materials of formula II above used herein are generally prepared by reaction of 3,5-diacetyl-4,6-dihydroxy-2H-pyran-2-one with the appropriate amine (RNH2). The reactants are usually heated at reflux in an inert organic solvent such as benzene, toluene or methanol for from two to twelve hours. 3,5-Diacetyl-4,6-dihydroxy-2H-pyran-2-one is obtained by reaction of acetonedicarboxylic acid and acetic anhydride in sulfuric acid at elevated temperature.

後処理

  1. temperatureThe reactants are usually heated

出典と根拠

ORDレコード
ord-a4080139efa24d0e88eb74d17b34b454
出典データセット
uspto-grants-1977_04
特許番号
US04017633

関連ノート

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