Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/14638
Title: | Palladium-catalyzed oxidative ethoxycarbonylation of aromatic C-H bond with diethyl azodicarboxylate | Authors: | Yu, WY Sit, WN Lai, KM Zhou, Z Chan, ASC |
Issue Date: | 2008 | Publisher: | Amer Chemical Soc | Source: | Journal of the American chemical society, 2008, v. 130, no. 11, p. 3304-3306 How to cite? | Journal: | Journal of the American Chemical Society | Abstract: | This communication describes the Pd(OAc)2-catalyzed ethoxycarbonylation reactions of aromatic C-H bonds using diethyl azodicarboxylate (DEAD) together with Oxone or K2S2O8. Substrates such as 2-arylpyridines, pyrrolidinone, acetylindoline, quinoline, and oximes were ethoxycarbonylated with excellent chemo- and regioselectivities. The catalytic reaction is probably initiated by chelation-assisted cyclopalladation of the ortho-C-H bond. Preliminary studies suggested that reactive ethoxyacyl radicals generated from thermal decomposition of DEAD were involved in the ester formation. | URI: | http://hdl.handle.net/10397/14638 | DOI: | 10.1021/ja710555g |
Appears in Collections: | Journal/Magazine Article |
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