Formaldehyde → Undecanal, 2-methylene-

HRID 15621

反応式

HRID 15621 の反応式
[CH:1](=[O:12])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH3:11].C=O.[CH2:15](NCCCC)CCC.C(O)(=O)CCCCCCCCCCCCCCCCC>>[CH2:15]=[C:2]([CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH3:11])[CH:1]=[O:12]

参加物

5

反応物 4

HCID 712FormaldehydeHCID 5281Stearic AcidHCID 8148DibutylamineHCID 8186Undecanal2 回

生成物 1

HCID 89705Undecanal, 2-methylene-収率 1,583.3%

反応条件

温度
95 °C

実験手順

A 3 L four-necked flask equipped with a stirrer, a thermometer and a reflux condenser was charged with 1043 g (6.0 mol) of n-undecanal, 520 g (6.4 mol) of a 37% by mass formaldehyde aqueous solution, 47 g (0.36 mol) of dibutyl amine and 33 g (0.11 mol) of stearic acid, and the contents in the flask were stirred while heating at 95° C. After the elapse of 30 min. it was confirmed that no n-undecanal was present in the raw mixture, and then the mixture was cooled and separated into two layers. The thus separated organic layer was subjected to distillation treatment, thereby obtaining 1062 g (5.7 mol) of α-methylene undecanal (purity as measured by gas chromatography: 97%) (yield based on theoretical amount: 95%).

後処理

  1. customA 3 L four-necked flask equipped with a stirrer
  2. customAfter the elapse of 30 min. it
  3. temperaturethe mixture was cooled
  4. customseparated into two layers
  5. distillationThe thus separated organic layer was subjected to distillation treatment

出典と根拠

ORDレコード
ord-ed318f7105764e938d27aaa8efcdf566
出典データセット
uspto-grants-2010_06
特許番号
US07732644B2

関連ノート

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