Styrene → Benzene, ethenyl-, polymer with 1,3-butadiene

HRID 1732672Notes

Reaction equation

HRID 1732672 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.C(OCC)(OCC)OCC.C=CC=C>C1CCCCC1>[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 7501StyreneHCID 78451,3-ButadieneHCID 31214Ethyl orthoformate

Product 1

HCID 62697Benzene, ethenyl-, polymer with 1,3-butadiene

Reagents, catalysts & solvents 1

HCID 8078CyclohexaneSolvent

Procedure

A 70/30 butadiene-styrene block copolymer was prepared according to Recipe 4 by first forming the styrene block. Then triethyl orthoformate was added in a cyclohexane solution with the butadiene to the polystyryllithium polymerization mixture.

Sources & evidence

ORD record
ord-a60efd39e47b40b1ac9ec349c778124e
Source dataset
uspto-grants-1980_12
Patent number
US04238576

Reaction notes

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