Preparation of cyclobutene substituted aromatic hydrocarbons

Details Preparation of cyclobutene substituted aromatic hydrocarbons Preparation of cyclobutene substituted aromatic hydrocarbons

C - Chemistry, Metallurgy

07

C

260/550.1, 260/4

C07C 13/34 (2006.01) C07C 69/76 (2006.01) C07C 103/75 (1985.01)

Patent

CA 1231961

ABSTRACT The invention is a process for the preparation of an aromatic hydrocarbon with a cyclobutene ring fused to the aromatic hydrocarbon which comprises, dissolving an ortho-alkyl halomethyl aromatic hydrocarbon in an inert solvent and pyrolyzing the solution of ortho-alkyl halomethyl aromatic hydrocarbon in the inert solvent under conditions such that the ortho-alkyl and the halomethyl substituents form a cyclobutene ring thereby forming an aromatic hydrocarbon having a fused cyclobu- tene ring. The ortho-alkyl group has the structural formula (R')2-CH-, wherein R' is separately in each occurance hydrogen or a C1-20 alkyl. The aromatic hydro- carbons with a cyclobutene ring fused to the aromatic hydrocarbon are useful in the preparation of monomers, which are then useful in the preparation of high performance polymers. 32,365-F

481777

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