Acetic Anhydride → Acetonedicarboxylic acid anhydride

HRID 433951

반응식

HRID 433951 반응식
[C:1]([O:4][C:5](=[O:7])[CH3:6])(=[O:3])C.[CH2:8](C(O)=O)[C:9](CC(O)=O)=[O:10]>C(O)(=O)C>[CH3:8][C:9]([CH:6]1[C:1](=[O:3])[O:4][C:5]1=[O:7])=[O:10]

참가 물질

4

반응물 2

HCID 7918Acetic AnhydrideHCID 68328Acetonedicarboxylic acid

생성물 1

HCID 54573794Acetonedicarboxylic acid anhydride수율 86%

시약·촉매·용매 1

HCID 176Acetic Acid용매

실험 절차

To a solution of 60 ml of acetic acid and 43 ml of acetic anhydride at 0° C., was added slowly 40 g (0.27 mol) of acetonedicarboxylic acid. The mixture was stirred and the temperature was not allowed to rise above 10° C. The acid was dissolved slowly and a pale yellow precipitate formed. After 3 h the product was filtered, washed with 30 ml of glacial acetic acid and 100 ml of benzene. The white powder obtained was dried at high vacuum to afford 30 g of acetonedicarboxylic acid anhydride (yield 86%). Mp 137-138° C.

후처리

  1. customto rise above 10° C
  2. dissolutionThe acid was dissolved slowly
  3. customa pale yellow precipitate formed
  4. filtrationAfter 3 h the product was filtered
  5. washwashed with 30 ml of glacial acetic acid and 100 ml of benzene
  6. customThe white powder obtained
  7. customwas dried at high vacuum

출처 및 근거

ORD 기록
ord-010c35c25abc4c34bab80181cd8812d0
출처 데이터셋
uspto-grants-2003_12
특허 번호
US06670375B2

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