Abstract
The 3,4-dihydro-2,5-dimethyl-2H-pyran-2-carbaldehyde (methacrolein dimer) 1 was oxidized at 20-60°C with air in the presence of polymeric Mn(II), Co(II) and Cu(II) complexes. The 3,4-dihydro-2,5-dimethyl-2H-pyran-2-carboxylic acid 2 formed at the first stage of oxidation undergoes self condensation with 1 to a monoester of hemiacetal 3. Gradual addition of hydroxyl groups of 3 to the vinyl-ether groups of 3 resulted in the formation of a mixture of cyclic oligo(acetal-esters) 5 (14-, 21- and 28-membered rings).
| Original language | English |
|---|---|
| Pages (from-to) | 35-41 |
| Number of pages | 7 |
| Journal | Reactive and Functional Polymers |
| Volume | 26 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - Sept 1995 |
Keywords
- Cyclic oligo(acetal-ester)
- Maleic acid copolymer
- Methacrolein dimer
- Oxidation
- Polymeric complex
ASJC Scopus subject areas
- General Chemistry
- Environmental Chemistry
- Biochemistry
- General Chemical Engineering
- Polymers and Plastics
- Materials Chemistry
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