Synthesis of 2‐Aryl‐ and 2‐Heteroaryl‐3,5‐dimethoxy‐1,4‐benzoquinones Involving Pd‐Catalyzed Cross‐Coupling of (2,3,4,6‐Tetramethoxyphenyl)boronic Acid |
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| Authors: | Enio&#x;Jos Leo&#x;Lana Fernando Carazza Rosilene Aparacida&#x;de&#x;Oliveira |
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| Institution: | Enio José Leão Lana,Fernando Carazza,Rosilene Aparacida de Oliveira |
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| Abstract: | A series of 2‐aryl‐ and 2‐heteroaryl‐substituted 3,5‐dimethoxy‐1,4‐benzoquinones (compounds 27 – 36 ) have been synthesized by cross‐coupling of (2,3,4,6‐tetramethoxyphenyl)boronic acid ( 2 ) with aromatic bromides or iodides in the presence of Pd0(Ph3)4] and Na2CO3, followed by AgO‐promoted oxidation of the resulting biaryl compounds 17 – 26 . |
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