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Branch-Selective Allylic C–H Carboxylation of Terminal Alkenes by Pd/sox Catalyst

Hiroki Kondo, Feng Yu, Junichiro Yamaguchi, Guosheng Liu, and Kenichiro Itami

Org. Lett2014, ASAP. DOI: 10.1021/ol5019135

 

 A ligand-controlled branch-selective allylic C− H carboxylation through Pd catalysis is described. Thedeveloped catalytic system, which consists of Pd(OAc)2 ,sulfoxide−oxazoline (sox) as a ligand and benzoquinone as an oxidant, couples terminal alkenes and carboxylic acids to furnish the corresponding branched allylic esters with high regioselectivity.

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