A process for the palladium-catalyzed coupling of terminal...

C - Chemistry – Metallurgy – 07 – C

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C07C 17/00 (2006.01) C07C 22/08 (2006.01) C07C 45/61 (2006.01) C07C 49/563 (2006.01) C07C 213/08 (2006.01) C07C 217/08 (2006.01) C07C 231/12 (2006.01) C07C 233/07 (2006.01) C07C 253/30 (2006.01) C07C 255/58 (2006.01) C07D 295/00 (2006.01) C07D 333/20 (2006.01)

Patent

CA 2692222

The present invention relates to a process for the regioselective synthesis of compounds of the formula (I), wherein R1; R2; R3; R4; R5; J and W have the meanings indicated in the claims. The present invention provides an efficient and general palladium-catalyzed coupling process for aryl tosylates with terminal alkynes to a wide variety of substituted, multifunctional aryl-1--alkynes of the formula (I) useful for the production of intermediates in the preparation for pharmaceuticals, diagnostic agents, liquid crystals, polymers, herbicides, fungicidals, nematicidals, para-

La présente invention concerne un procédé de synthèse régiosélective de composés représentés par la formule (I), dans laquelle R1; R2; R3; R4; R5; J et W présentent les significations indiquées dans les revendications. La présente invention concerne un procédé, efficace et général, de couplage catalysé par le palladium de tosylates d'aryle avec des alcynes terminales pour obtenir une large variété d'aryl-1-alcynes substituées, multifonctionnelles, représentées par la formule (I), utiles pour la production d'intermédiaires utilisés dans la préparation de médicaments, d'agents de diagnostic, de cristaux liquides, de polymères, d'herbicides, de fongicides, de nématicides, de parasiticides, d'insecticides, d'acaricides et d'arthropodicides.

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