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. 2009 Oct 1;11(19):4270-3.
doi: 10.1021/ol901585k.

Preparation of polyfunctional indazoles and heteroarylazo compounds using highly functionalized zinc reagents

Benjamin Haag  1 , Zhihua Peng, Paul Knochel
Affiliations

Preparation of polyfunctional indazoles and heteroarylazo compounds using highly functionalized zinc reagents

Benjamin Haag et al. Org Lett. .

Abstract

Readily available 2-chloromethylarylzinc reagents react with functionalized aryldiazonium tetrafluoroborates providing polyfunctional indazoles. Selective metalations of these 2-aryl-2H-indazoles afford new polycyclic aromatics. The performance of a chemoselective addition of diheteroarylzincs to aryldiazonium salts allows an efficient preparation of new heterocyclic azo compounds.

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