Allyl bromide → 2-Methyl-6-hepten-3-yn-2-ol

HRID 484574Notes

Reaction equation

HRID 484574 reaction equation
[CH3:1][C:2]([OH:6])([C:4]#[CH:5])[CH3:3].[CH2:7](Br)[CH:8]=[CH2:9].C(=O)([O-])[O-].[K+].[K+]>[Cl-].C([N+](CC)(CC)CC)C1C=CC=CC=1.C(#N)C>[CH3:1][C:2]([OH:6])([C:4]#[C:5][CH2:9][CH:8]=[CH2:7])[CH3:3]

Participants

6

Reactant 3

HCID 7841Allyl bromideHCID 82582-Methyl-3-butyn-2-olHCID 11430Potassium Carbonate

Product 1

HCID 122282052-Methyl-6-hepten-3-yn-2-olYield 60%

Reagents, catalysts & solvents 2

HCID 66133Benzyl triethylammonium chlorideCatalystHCID 6342AcetonitrileSolvent

Procedure

The coupling reaction was conducted in the manner described in the procedure of Example VI using the following reagents: 1.00 mL (10.3 mmoles) of 2-methyl-3-butyn-2-ol, 1.00 mL (11.6 mmoles) of allyl bromide (3-bromopropene), 2.21 g (16.0 mmoles) of anhydrous potassium carbonate, 93 mg (0.94 mmoles) of cuprous chloride, and 207 mg (0.91 mmole) of benzyltriethylammonium chloride in 3.00 mL of acetonitrile (HPLC-grade). Isolation of the product in the manner described in the procedure of Example III afforded, after removal of the volatile organic solvents at reduced pressure, 765 mg (60% yield) of the named alcohol, the identity and purity of which were ascertained by IR and proton NMR analysis.

Workup

  1. customThe coupling reaction
  2. customafforded

Sources & evidence

ORD record
ord-1a653cc41ebd4e76974b158533a9117a
Source dataset
uspto-grants-1993_07
Patent number
US05231232

Reaction notes

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