Process for preparing monohalogenated cyclobutarenes

C - Chemistry – Metallurgy – 07 – C

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260/653.1

C07C 17/12 (2006.01) C07C 25/22 (2006.01)

Patent

CA 1305495

64693-4235 ABSTRACT Monobrominated cyclobutarenes are prepared by bromi- nating a cyclobutarene in the presence of an organic complexing agent, an acid scavenger, or water. Faster reaction rates highly selective to monobrominated cyclobutarenes are obtained without conventional heavy metal or halogen catalysts. Mono- brominated cyclobutarenes are intermediates for the preparation of high performance monomeric and polymeric compositions for the electronics and aerospace industries.

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