Bidentate auxiliary-directed alkenyl C-H allylation via exo-palladacycles: synthesis of branched 1,4-dienes.

Chem Commun (Camb)

College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.

Published: November 2019

An alkenyl C-H allylation by an exo-palladacycle intermediate is demonstrated, employing unactivated (Z)-alkenes and allyl carbonates. With the use of an 8-aminoquinoline (AQ) derived amide as the directing group, the N,N-bidentate-chelation-assisted C-H activation protocol proceeded under mild and oxidant-free conditions with excellent selectivity. The utility of this approach is demonstrated by the preparative scale, selective conversion of inseparable Z/E alkenes and ready removal of the amide auxiliary to provide the corresponding ester.

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http://dx.doi.org/10.1039/c9cc07466jDOI Listing

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