Isoprene → 2-Methylbuta-1,3-diene--2-methylprop-1-ene (1/1)

HRID 1294041

Reaction equation

HRID 1294041 reaction equation
[CH2:1]=[CH:2][C:3](=[CH2:5])[CH3:4]>CO>[CH2:2]=[C:3]([CH3:5])[CH3:4].[CH2:1]=[CH:2][C:3](=[CH2:4])[CH3:5]

Participants

3

Reactant 1

HCID 6557Isoprene2×

Product 1

HCID 627032-Methylbuta-1,3-diene--2-methylprop-1-ene (1/1)

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

The methodology of Example 3 was repeated, except that 1.5 mL of isoprene was added to the reaction vessel prior to initiation. The mixture was allowed to stir at −78° C. for 10 minutes, before addition of methanol (10 mL) to terminate the reaction. The yield of copolymer was 5.5 g (Mn=104,000, Mw=203,000). The isoprene content in the rubber was 1.5 mol-percent.

Workup

  1. additionwas added to the reaction vessel
  2. customto terminate
  3. customthe reaction

Sources & evidence

ORD record
ord-3c3de0c419514d8daadb65184fdf715d
Source dataset
uspto-grants-2007_07
Patent number
US07238819B2

Linked notes

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