Everything about Maleic Anhydride totally explained
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Maleic anhydride (
cis-butenedioic anhydride, toxilic anhydride, dihydro-2,5-dioxofuran) is an
organic compound with the formula C
4H
2O
3. In its pure state it's a colourless or white solid with an acrid odour.
Maleic anhydride was traditionally manufactured by the
oxidation of
benzene or other
aromatic compounds. As of 2006, only few smaller plants continue to use benzene; due to rising benzene prices, most maleic anhydride plants now use n-
butane as a feedstock:
» 2 CH
3CH
2CH
2CH
3 + 7 O
2 → 2 C
2H
2(CO)
2O + 8 H
2O
Characteristic reactions
The chemistry of maleic anhydride is very rich, reflecting its ready availability and bifunctional reactivity.
- It hydrolyzes, producing maleic acid, cis-HO2CCH=CHCO2H. With alcohols, the half-ester is generated, for example, cis-HO2CCH=CHCO2CH3.
- Maleic anhydride is a potent dienophile in Diels-Alder reactions.
- Maleic anhydride (MA) is an excellent ligand for low-valent metal complexes, examples being Pt(PPh3)2(MA) and Fe(CO)4(MA).
Further Information
Get more info on 'Maleic Anhydride'.
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