Journal
SYNTHESIS-STUTTGART
Volume 54, Issue 19, Pages 4329-4338Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/a-1866-7737
Keywords
palladium; C-H activation; acylation; arenes; synthetic methods
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Funding
- National Natural Science Foundation of China [21476078]
- Science and Technology Commission of Shanghai Municipality [12431900902]
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A new palladium/norbornene-cocatalyzed Catellani-type C-H acylation and cyanation reaction has been developed without the need for directing groups, offering high yield and easy manipulation.
A palladium/norbornene-cocatalyzed Catellani-type orthoC-H-acylationfipso-cyanation of iodoarenes is developed via a three-component approach using safe and low-toxic sodium carboxylates as the acyl sources and CuCN as the CN source, affording the desired products in yields of 50-94%. Without introducing a directing group on the substrate, a catalytic amount of norbornene and palladium can regioselectively activate the ortho-C-H bonds of iodoarenes. The reaction exhibits good functional group tolerance and works well on gram-scale. In addition, this transformation allows rapid and convenient access toward isoindolinones, 1,4-dicarbonyl compounds and ortho-aminated benzonitriles by manipulation of the cyano and carbonyl groups.
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