Dimethyl Sulfoxide → Methyl 4-formylcyclohexane-1-carboxylate

HRID 129276

反応式

HRID 129276 の反応式
CS(C)=O.C(Cl)(=O)C(Cl)=O.[OH:11][CH2:12][CH:13]1[CH2:18][CH2:17][CH:16]([C:19]([O:21][CH3:22])=[O:20])[CH2:15][CH2:14]1.C(N(CC)CC)C>ClCCl.O>[CH:12]([CH:13]1[CH2:14][CH2:15][CH:16]([C:19]([O:21][CH3:22])=[O:20])[CH2:17][CH2:18]1)=[O:11]

参加物

7

反応物 4

HCID 679Dimethyl SulfoxideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 11073869Cyclohexanecarboxylic acid, 4-(hydroxymethyl)-, methyl ester

生成物 1

HCID 11252253Methyl 4-formylcyclohexane-1-carboxylate収率 91.7%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6344Dichloromethane溶媒3 回

反応条件

温度
-70 °C

実験手順

Dimethyl sulphoxide (0.65 ml) in dry dichloromethane (5 ml) was added to a solution of oxalyl chloride (0.363 ml) in dichloromethane (5 ml) at -70° C. under a stream of nitrogen. After 5 minutes stirring a solution of methyl 4-hydroxymethylcyclohexanecarboxylate (0.64 g) in dichloromethane (5 ml) was added dropwise. The reaction mixture was stirred for 30 minutes at -70° C. Triethylamine (2.60 ml) was then added and the reaction mixture allowed to warm to room temperature during a period of 3 hours. After pouring into water (100 ml) the organic phase was washed with dilute hydrochloric acid, sodium bicarbonate solution and brine before drying over magnesium sulphate. Evaporation in vacuo gave methyl 4-formylcyclohexanecarboxylate (0.58 g) as a mixture of cis- and trans-isomers.

後処理

  1. additionwas added dropwise
  2. temperatureto warm to room temperature during a period of 3 hours
  3. washwas washed with dilute hydrochloric acid, sodium bicarbonate solution and brine
  4. dry with materialbefore drying over magnesium sulphate
  5. customEvaporation in vacuo

出典と根拠

ORDレコード
ord-6d2e82a815f641d0a89bac57b62e8a81
出典データセット
uspto-grants-1995_11
特許番号
US05466710

関連ノート

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