Adipic Acid → Oxygen
反応式
[CH2:1](O)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][OH:7].[C:9]1(=[O:16])[O:15][CH2:14][CH2:13][CH2:12][CH2:11][CH2:10]1.C(O)(=O)CCCCC(O)=O.OCCCCCC(O)=O.[OH2:36]>C1CCCCC1>[C:6]1(=[O:7])[CH2:5][CH2:4][CH2:3][CH2:2][CH2:1]1.[CH:9]1([OH:16])[CH2:10][CH2:11][CH2:12][CH2:13][CH2:14]1.[O:36]=[O:15]参加物
実験手順
Moreover, WO 97/31883 describes a process for preparing 1,6-hexanediol and ε-caprolactone from a carboxylic acid mixture which comprises adipic acid, 6-hydroxy-caproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product of the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases and by water extraction of the reaction mixture, and this mixture is esterified with a low molecular weight alcohol to give the corresponding carboxylic esters, the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, the bottom product is separated in a second distillation stage into an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the cyclohexanediols, obtaining a fraction comprising essentially 6-hydroxycaproic acid (stage 12) by means of a third distillation stage and cyclizing it to ε-caprolactone in the gas or liquid phase.
出典と根拠
- ORDレコード
- ord-596eacd78df04207adb9cc8a1dcb5021
- 出典データセット
- uspto-grants-2012_07
- 特許番号
- US08217186B2
反応ノート
読み込み中…