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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 20, Number 12
BKCSDE 20(12)
December 20, 1999 

2-(Multimethoxyphenyl)-4-methylene-1,3-dioxolane: (III) Polymerization of 2-(2,4-Dimethoxyphenyl)-4-methylene-1,3-dioxolane with Various Cationic Catalysts
Won-Cheoul Jang, Jang-Soon Bae, Myoung-Seon Gong
The 2-(2,4-dimethoxyphenyl)-4-MDO (2) underwent polymerization with ring opening as well as cyclization reaction in the presence of various cationic catalysts such as boron trifluoride, trifluoromethanesulfonic acid, p-toluenesulfonic acid, hydrochloric acid and trifluoroacetic acid. They afforded a mixture of the ring-opened poly(keto ether) and 3(2H)-dihydrofuranone derivative. Both the methylene group and oxygen atom of 1,3-dioxolane ring were participated in the reaction with cationic catalyst. The contents of the polymer and cyclization product were variable according to the acid strength of the cationic catalysts.
1433 - 1436
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