Process for preparing aminobenzocyclobutenes

Details Process for preparing aminobenzocyclobutenes Process for preparing aminobenzocyclobutenes

C - Chemistry, Metallurgy

07

C

C07C 211/60 (2006.01) C07C 209/04 (2006.01) C07C 209/10 (2006.01) C07C 309/63 (2006.01) C07C 309/66 (2006.01) C07C 309/73 (2006.01) C07D 207/448 (2006.01) C07D 209/48 (2006.01)

Patent

CA 2116240

2116240 9306083 PCTABS00021 A process for preparing a 3- or 4-aminobenzocyclobutene comprises aminating a 3- or 4-halo- or sulfonyloxybenzocyclobutene reactant with an aminating agent by heating at a temperature from 80 ·C to a temperature at which dimerization or oligomerization of a benzocyclobutene reactant or product is a significant side reaction, in the presence of a catalyst containing a catalytic amount of elemental copper or a copper compound, for a time sufficient to aminate the halo- or sulfonyloxybenzocyclobutene reactant. In another aspect, this invention relates to a process for making a 3- or 4-phthalimido- or maleimidobenzocyclobutene, comprising reacting a 3- or 4-halobenzocyclobutene reactant with a phthalimide or maleimide compound in the presence of a catalyst containing a catalytic amount of elemental copper or a copper compound. The resulting phthalimido- or maleimidobenzocyclobutene can be hydrolyzed to a 3- or 4-aminobenzocyclobutene.

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