1,2-Dibromoethane → 4-Hydroxy-4-methyl-oct-1-yn-7-ene

HRID 126727ノート

反応式

HRID 126727 の反応式
[Mg].Br[CH2:3][CH2:4]Br.[CH2:6](Br)C#C.[O:10]=[C:11]([CH3:16])[CH2:12][CH2:13][CH:14]=[CH2:15].[Cl-].[NH4+]>CCOCC>[OH:10][C:11]([CH3:6])([CH2:12][CH2:13][CH:14]=[CH2:15])[CH2:16][C:3]#[CH:4]

参加物

7

反応物 5

HCID 78391,2-DibromoethaneHCID 7842Propargyl bromide2 回HCID 79895-Hexene-2-oneHCID 25517Ammonium ChlorideHCID 5462224Magnesium

生成物 1

HCID 205650044-Hydroxy-4-methyl-oct-1-yn-7-ene

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒3 回

実験手順

A mixture of 19.45 g. of magnesium, 0.15 g. of mercuric chloride and 0.5 ml. of 1,2-dibromoethane in 40 ml. of ether, under argon, is stirred for 5 minutes. A 0.5 ml. portion of propargylbromide is added followed by 160 ml. of ether. To the stirred mixture is added dropwise a solution of 60.0 g. of 5-oxo-1-hexene and 87.3 g. of propargyl bromide in 100 ml. of ether, at such a rate as to maintain a vigorous reflux. After addition is complete, the mixture is stirred for 20 minutes, cooled in an ice-bath and a saturated solution of ammonium chloride is added dropwise. The solid is removed by filtration through Celite and washing with ether. The solvent is removed from the filtrate giving the product as an orange liquid.

後処理

  1. additionA mixture of 19.45 g
  2. additionTo the stirred mixture is added dropwise a solution of 60.0 g
  3. additionAfter addition
  4. temperaturecooled in an ice-bath
  5. customThe solid is removed by filtration through Celite
  6. washwashing with ether
  7. customThe solvent is removed from the filtrate

出典と根拠

ORDレコード
ord-de79c9b864c7407ba4069d6dced46f0a
出典データセット
uspto-grants-1981_03
特許番号
US04254036

反応ノート

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