Acetic Anhydride → Acetonedicarboxylic acid anhydride
反応式
[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]参加物
4
実験手順
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.
後処理
- customto rise above 10° C
- dissolutionThe acid was dissolved slowly
- customa pale yellow precipitate formed
- filtrationAfter 3 h the product was filtered
- washwashed with 30 ml of glacial acetic acid and 100 ml of benzene
- customThe white powder obtained
- customwas dried at high vacuum
出典と根拠
- ORDレコード
- ord-960ae6dbf3fa45d3b8b2109797f3961d
- 出典データセット
- uspto-grants-2002_03
- 特許番号
- US06353105B1
反応ノート
読み込み中…