Styrene → 2-Hydroxy-alpha-methylstyrene

HRID 1903280

Reaction equation

HRID 1903280 reaction equation
C(#N)C=C.C=CC1C=CC=CC=1.C(C1C=C[C:19]([OH:22])=[CH:18][CH:17]=1)(C)=C.C[CH:24]([CH2:27][CH:28]([CH3:30])[CH3:29])[C:25]#N.N(C(C)(CC(C)C)C#N)=NC(C)(CC(C)C)C#N>C(OCC)(=O)C>[C:28]([C:27]1[CH:24]=[CH:25][CH:17]=[CH:18][C:19]=1[OH:22])([CH3:29])=[CH2:30]

Participants

7

Reactant 5

HCID 7501StyreneHCID 7855AcrylonitrileHCID 915372,2'-Azobis(2,4-dimethylvaleronitrile)HCID 584247p-IsopropenylphenolHCID 218816762,4-Dimethylpentanenitrile

Product 1

HCID 112979922-Hydroxy-alpha-methylstyrene

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

Acrylonitrile (270 g), styrene (630 g), p-isopropenylphenol (100 g), ethyl acetate (250 g) and 2,2'-azobis(2,4-dimethylvaleronitrile (5 g) were fed and polymerized at 60° C. for 4 hours, followed by further adding ethyl acetate (250 g) and 2,2'-azobis(2,4-dimethylvaleronitrile) (5 g) and further polymerization at 60° C. for 4 hours. Solvent was then removed under reduced pressure to obtain a copolymer of isopropenylphenol (hereinafter abbreviated to phenolic polymer B). The viscosity of 5% solution of phenolic polymer B in ethyl acetate, at 25° C., was 1.75 cps.

Workup

  1. custompolymerized at 60° C. for 4 hours
  2. additionby further adding
  3. customSolvent was then removed under reduced pressure

Sources & evidence

ORD record
ord-d3f0d5d72fd845cf9108ec4075bd4cea
Source dataset
uspto-grants-1984_03
Patent number
US04435543

Linked notes

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