Acetone → 1,3-Propanediol, 2-(4-pentenyl)-

HRID 2254981

反応式

HRID 2254981 の反応式
[H-].[Al+3].[Li+].[H-].[H-].[H-].[CH2:7]([CH:12]([C:18](OCC)=[O:19])[C:13](OCC)=[O:14])[CH2:8][CH2:9][CH:10]=[CH2:11].CC(C)=O.C(=O)([O-])O.[Na+]>O1CCCC1>[CH2:7]([CH:12]([CH2:18][OH:19])[CH2:13][OH:14])[CH2:8][CH2:9][CH:10]=[CH2:11]

参加物

6

反応物 4

HCID 180AcetoneHCID 361718Diethyl 2-pent-4-enylpropanedioateHCID 516892Sodium BicarbonateHCID 21226445Aluminium lithium hydride

生成物 1

HCID 110947511,3-Propanediol, 2-(4-pentenyl)-収率 84.9%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

A suspension of 13.8 g of lithium aluminium hydride in 500 ml of tetrahydrofuran was treated dropwise under nitrogen at 0°-5° C. within 1 hour with a solution of 33.2 g of diethyl (4-pentenyl)malonate in 125 ml of tetrahydrofuran. The mixture was stirred overnight at room temperature and then heated to boiling for 3 hours. After cooling there were cautiously added dropwise to the reaction mixture firstly 25 ml of acetone and then 25 ml of saturated sodium hydrogen carbonate solution. The resulting slurry was suction filtered and the residue on the suction filter was washed four times with tetrahydrofuran. Concentration of the filtrate gave 17.8 g of 2-(4-pentenyl)-1,3-propanediol (purity 89%) as a yellow liquid.

後処理

  1. temperatureheated
  2. waitto boiling for 3 hours
  3. temperatureAfter cooling there
  4. filtrationfiltered
  5. filtrationthe residue on the suction filter
  6. washwas washed four times with tetrahydrofuran

出典と根拠

ORDレコード
ord-ccdd6c6ec8f844d7b3e4ce94154a2b28
出典データセット
uspto-grants-1993_08
特許番号
US05238602

関連ノート

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