Process for the preparation of substituted aromatic compounds

Details Process for the preparation of substituted aromatic compounds Process for the preparation of substituted aromatic compounds

C - Chemistry, Metallurgy

07

B

C07B 37/04 (2006.01) C07C 17/26 (2006.01) C07C 25/18 (2006.01) C07C 205/06 (2006.01) C07C 253/30 (2006.01) C07C 305/06 (2006.01) C07C 255/50 (2006.01)

Patent

CA 2268304

A process for the preparation of a substituted aromatic compound in which a chloroaromatic compound and an alkyl-, alkenyl- or aryl-boronic acid, ester or anhydride are coupled in the presence of palladium and a lipophilic aliphatic phosphine comprising at least one branched aliphatic group or a lipophilic aliphatic bis(phosphine). Preferred phosphines include triisopropyl, triisobutyl and tricyclohexylphosphine.

L'invention concerne un procédé de préparation d'un composé aromatique substitué dans lequel un composé chloroaromatique et un acide, un ester ou un anhydrique d'un acide alkyl-, alcényl- ou aryl-boronique sont couplés, en présence de palladium et d'une phosphine lipohile aliphatique comprenant au moins un groupe aliphatique ramifié ou une bis(phosphine) aliphatique lipophile. Parmi les phosphines préférées on peut citer la triisopropyl-, la triisobutyl- et la tricyclohexylphosphine.

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