Malonic Acid → 3-Allyl-4-hydroxy-cinnamic acid
反応式
C(O[C:5]1[CH:6]=[C:7]([CH:10]=[CH:11][C:12]=1[OH:13])[CH:8]=O)C=C.[C:14]([OH:20])(=[O:19])[CH2:15]C(O)=O.N1CC[CH2:24][CH2:23][CH2:22]1>N1C=CC=CC=1>[CH2:24]([C:5]1[CH:6]=[C:7]([CH:10]=[CH:11][C:12]=1[OH:13])[CH:8]=[CH:15][C:14]([OH:20])=[O:19])[CH:23]=[CH2:22]参加物
5
実験手順
48.5 g (0.27 mol) of 3-allyloxy-4-hydroxy-benzaldehyde, 104 g (1 mol) of malonic acid, 140 ml of pyridine and 4 ml of piperidine are heated to 100° C. for 2 hours, whilst stirring. The volatile constituents are distilled off under reduced pressure at 80° C. and the residue is stirred with 800 ml of water. The crystals obtained are filtered off and recrystallised from methylene chloride. 3-Allyl-4hydroxy-cinnamic acid of melting point 132°-133° C. is obtained.
後処理
- distillationThe volatile constituents are distilled off under reduced pressure at 80° C.
- stirringthe residue is stirred with 800 ml of water
- customThe crystals obtained
- filtrationare filtered off
- customrecrystallised from methylene chloride
出典と根拠
- ORDレコード
- ord-548327931f1546e6a760d4cef79c0a34
- 出典データセット
- uspto-grants-1977_07
- 特許番号
- US04038414
反応ノート
読み込み中…