2-(Multimethoxy)phenyl-4-methylene-1,3-dioxolane(I):Preparation and Cationic Polymerization of 2-(Dimethoxy)phenyl-4-MDO Derivatives 


Vol. 20,  No. 6, pp. 663-666, Jun.  1999


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  Abstract

The 4-methylene-1,3-dioxolane(4-MDO) derivatives with dimethoxyphenyl group on the 2-position of 1,3-dioxolane ring, 2-(x,y-dimethoxyphenyl)-4-MDO derivatives (x,y=2,3(1b), 2,4(2b), 2,5(3b) and 3,4(4b)) were prepared by acelalizationof the corresponding benzaldehyde with 3-chloro-1,2-propanediol, followed by dehydrochlorination. 2-(Dimethoxy)phenyl-4-MDO derivatives underwent polymerization wiht ring opening as will as cyclization reaction to afford a mixture of the ring-opened polymer and 3(2H)-dihydrofuranone derivative with boron trifluoride as a cationic catalyst. Both the methylene group and 1,3-dioxolane ring were participated in the reaction with cationic catalyst. The key intermediate of the polymerization is a benzyl cation generated by ring opening, and the cyclization reaction proceed via proton addition to oxygen atom of 1,3-dioxolane ring.

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  Cite this article

[IEEE Style]

J. Kim and M. Gong, "2-(Multimethoxy)phenyl-4-methylene-1,3-dioxolane(I):Preparation and Cationic Polymerization of 2-(Dimethoxy)phenyl-4-MDO Derivatives," Bulletin of the Korean Chemical Society, vol. 20, no. 6, pp. 663-666, 1999. DOI: .

[ACM Style]

Jong-Tae Kim and Myoung-Seon Gong. 1999. 2-(Multimethoxy)phenyl-4-methylene-1,3-dioxolane(I):Preparation and Cationic Polymerization of 2-(Dimethoxy)phenyl-4-MDO Derivatives. Bulletin of the Korean Chemical Society, 20, 6, (1999), 663-666. DOI: .

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949