Benzene → Acetic Anhydride

HRID 328592

반응식

HRID 328592 반응식
[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]

참가 물질

8

반응물 4

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

생성물 3

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

시약·촉매·용매 1

HCID 1118Sulfuric Acid용매

실험 절차

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.

후처리

  1. temperatureThe reactants are usually heated

출처 및 근거

ORD 기록
ord-a4080139efa24d0e88eb74d17b34b454
출처 데이터셋
uspto-grants-1977_04
특허 번호
US04017633

연결된 노트

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