4-Hydroxybenzoic Acid → HCID 68543975, compound
Reaction equation
[C:1](Cl)(=[O:5])[C:2]([CH3:4])=[CH2:3].O[C:8]1[CH:16]=[CH:15][C:11]([C:12]([OH:14])=[O:13])=[CH:10][CH:9]=1.[OH-:17].[Na+:18]>>[C:1]([O:5][C:10]1[CH:9]=[CH:8][CH:16]=[CH:15][C:11]=1[C:12]([O-:14])=[O:13])(=[O:17])[C:2]([CH3:4])=[CH2:3].[Na+:18]Participants
4
Procedure
Methacryloyl chloride was reacted with p-hydroxy benzoic acid that had been neutralised with NaOH solution to give sodium methacryloyl-oxy-benzoate in about 50% yield. Treatment with hydrochloric acid gave methacryloyl-oxy-benzoic acid which was purified by re-crystallisation from glacial acetic acid, ethanol and acetone respectively. The acid was polymerised at 90° C. in dimethyl formamide solution in a sealed degassed ampoule using benzoyl peroxide as initiator. This gave PMBA which was separated from residual monomer by dissolving the latter in diethyl ether.
Sources & evidence
- ORD record
- ord-941d5eeda61a408097c8088e1032889b
- Source dataset
- uspto-grants-1985_12
- Patent number
- US04556615
Reaction notes
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