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Dimethyl maleate is acts as a dienophile involved in ultrasonic irradiation promoted Diels-Alder reaction with substituted furans. It is widely used as an intermediate and additive for pharmaceuticals, copolymers, pigments, plastics, paints, adhesives and agrochemicals. As an internal modifier, it increases the glass transition temperature of styrene or vinyl chloride polymer. It plays a vital role to improve the hardness and toughness of polymer films such as copolymers of vinyl acetate.
Reactive dienophile. For a study of thermal cycloadditions with alkenes, see: J. Org. Chem., 57, 594 (1992).
Bosica, G.; Debono, A. J. Uncatalyzed, green aza-Michael addition of amines to dimethyl maleate. Tetrahedron 2014, 70 (37), 6607-6612.
Behr, A.; Toepell, S.; Harmuth, S. Cross-metathesis of methyl 10-undecenoate with dimethyl maleate: an efficient protocol with nearly quantitative yields. RSC Adv. 2014, 4 (31), 16320-16326.
Hazard Statements: H227-H302-H311-H315-H318-H317-H335
Combustible liquid. Harmful if swallowed. Toxic in contact with skin. Causes skin irritation. Causes serious eye damage. May cause an allergic skin reaction. May cause respiratory irritation.
Precautionary Statements: P260-P201-P280a-P304+P340-P405-P501a
Do not breathe dust/fume/gas/mist/vapours/spray. Obtain special instructions before use. Wear protective gloves and eye/face protection. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.