Palladium-catalyzed oxidative homocoupling of pyrazole boronic esters to access versatile bipyrazoles and the flexible metal–organic framework Co(4,4′-bipyrazolate)

Mercedes K Taylor,Julia Oktawiec,Martin Juhl,Dasol Hwang,Gul Barg Hadaf,Jonathan B Lefton,Ever Velasquez,Ji-Woong Lee,Tomče Runčevski,Jeffrey R Long

doi:10.1039/c9cc08614e

Palladium-catalyzed oxidative homocoupling of pyrazole boronic esters to access versatile bipyrazoles and the flexible metal–organic framework Co(4,4′-bipyrazolate)

Mercedes K Taylor, Julia Oktawiec + Show 8 more

https://doi.org/10.1039/c9cc08614e

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Journal: Chemical Communications	Publication Date: Jan 1, 2020
Citations: 7

Affiliation: St Vincent Hospital, California Coast University, Department of Physical and Technical Sciences, University of Copenhagen, Center for Integrated Nanotechnologies, Sandia National Laboratories, Southern Methodist University, Lawrence Berkeley National Laboratory

#Flexible Metal Organic Framework #Structural Phase Changes + Show 8 more

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Abstract

A facile route to 4,4'-bipyrazole (H2bpz) and other symmetric bipyrazoles is achieved via the palladium-catalyzed homocoupling of a pyrazole boronic ester in the presence of air and water, enabling us to provide the first crystal structures and evidence of structural phase changes in the bipyrazolate-based metal-organic framework Co(bpz).

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