82522-60-9Relevant articles and documents
Bis(carbomethoxy)maleic Anhydride
Hall, H. K.,Sentman, R. C.,Nogues, P.
, p. 3647 - 3649 (2007/10/02)
Bis(carbomethoxy)maleic anhydride (1) was synthesized by phosphoric anhydride induced demethoxylation of tetramethyl ethylenetetracarboxylate.With p-methoxystyrene, anethole, divinylbenzene, and diphenylethylene, 1 formed 2:1 Diels-Alder adducts.With styrene and isobutyl vinyl ether, 1 underwent an inverse electron-demand Diels-Alder reaction leading to 3,4-dihydro-2H-pyran derivatives.In the Diels-Alder reaction with butadiene, 1 was 100 times less reactive than (carbomethoxy)maleic anhydride.A radical-initiated alternating copolymer was obtained at 80 deg C with styrene.