Synthesis 2024; 56(17): 2655-2662
DOI: 10.1055/a-2331-2707
paper
Special Topic Dedicated to Prof. Erick Carreira

Palladium-Catalyzed Cyanations of Aryl Imidazolylsulfonates with K4[Fe(CN)6]: A Pragmatic Approach to Benzonitriles from Phenols

Nicolas A. Wilson
a   The Max and Minnie Tomerlin Voelcker Laboratory for Organic Chemistry, Dept. of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78248, USA
,
William M. Palmer
a   The Max and Minnie Tomerlin Voelcker Laboratory for Organic Chemistry, Dept. of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78248, USA
,
Jacob M. Ganley
b   Chemical Process Development, Bristol Myers Squibb, New Brunswick, New Jersey 08903, USA
,
John R. Coombs
b   Chemical Process Development, Bristol Myers Squibb, New Brunswick, New Jersey 08903, USA
,
Mark S. Levorse
b   Chemical Process Development, Bristol Myers Squibb, New Brunswick, New Jersey 08903, USA
,
Jennifer Albaneze-Walker
b   Chemical Process Development, Bristol Myers Squibb, New Brunswick, New Jersey 08903, USA
,
Doug E. Frantz
a   The Max and Minnie Tomerlin Voelcker Laboratory for Organic Chemistry, Dept. of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78248, USA
› Institutsangaben
D.E.F. would like to thank the Max and Minnie Tomerlin Voelcker Fund for unrestricted funds to our laboratories at UTSA. The UTSA NMR and X-ray facilities are supported by the National Science Foundation (NSF) (CHE-1625963 and CHE-1920057).


Dedicated to Prof. Erick M. Carreira on the occasion of his 60th birthday.

Abstract

A general Pd-catalyzed approach for the conversion of phenols into benzonitriles via aryl imidazolylsulfonates with a non-toxic cyanide source, potassium ferrocyanide, has been developed. Salient features of this method include low palladium precatalyst loadings (as low as 1.0 mol% total Pd), mild reaction conditions, and environmentally benign by-products compared to other (pseudo)halide aryl electrophiles. The initial scope of the reaction on a range of phenolic precursors is demonstrated including a one-pot, two-step approach to convert phenols directly into benzonitriles.

Supporting Information



Publikationsverlauf

Eingereicht: 11. April 2024

Angenommen nach Revision: 22. Mai 2024

Accepted Manuscript online:
22. Mai 2024

Artikel online veröffentlicht:
18. Juni 2024

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