Ethanol → 1,1-Diethoxy-3-methyl-2-butene

HRID 428643

反応式

HRID 428643 の反応式
P(=O)(O)(O)O.[CH3:6][C:7]([CH3:11])=[CH:8]C=O.C(O)C.[CH:15]([O:22][CH2:23][CH3:24])([O:19][CH2:20][CH3:21])OCC>CCOCC>[CH2:23]([O:22][CH:15]([O:19][CH2:20][CH3:21])[CH:6]=[C:7]([CH3:11])[CH3:8])[CH3:24]

参加物

6

反応物 4

HCID 702EthanolHCID 1004Phosphoric Acid2 回HCID 31214Ethyl orthoformateHCID 610203-Methyl-2-butenal

生成物 1

HCID 52153201,1-Diethoxy-3-methyl-2-butene収率 65%

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒

実験手順

Bull. Soc. Fr. 1965, 1007-1014 discloses the use of phosphoric acid. 3-Methyl-2-butenal is stirred with ethanol, triethyl orthoformate and phosphoric acid at room temperature for 40 hours. The reaction mixture is then taken up in ether, washed with 0.5 N aqueous ammonia and dried over sodium sulfate. Subsequent distillation affords 3-methyl-2-butenal diethyl acetal in a yield of 65%.

後処理

  1. washwashed with 0.5 N aqueous ammonia
  2. dry with materialdried over sodium sulfate
  3. distillationSubsequent distillation

出典と根拠

ORDレコード
ord-fef6dba3a65e4038bb8b2afcaf7eadc8
出典データセット
uspto-grants-2001_11
特許番号
US06313322B1

関連ノート

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