Process for the preparation of nitrophenyl-acetylene precursors

Details Process for the preparation of nitrophenyl-acetylene precursors Process for the preparation of nitrophenyl-acetylene precursors

C - Chemistry, Metallurgy

07

C

260/611

C07C 205/06 (2006.01)

Patent

CA 1093583

PROCESS FOR THE PREPARATION OF NITROPHENYLACETYLENE PRECURSORS Abstract of the Disclosure Nitrophenylacetylene and certain precursors to nitrophenylacetylene are prepared by reacting a nitrobromo- benzene with a substituted terminal acetylene compound con- taining at least three carbon atoms and a hydroxy group on the carbon atom adjacent to the acetylene group in the presence of a dialkyl or trialkyl amine solvent and a catalyst system consisting of a palladium complex containing two halogen moities and two tri-substituted phosphine moieties. A cuprous iodide promoter is also employed in the reaction sequence.

309501

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