Dual Photoredox/Gold Catalysis Arylative Cyclization of o-Alkynylphenols with Aryldiazonium Salts: A Flexible Synthesis of Benzofurans
Z Xia, O Khaled, V Mouriès-Mansuy… - The Journal of …, 2016 - ACS Publications
A new method for the arylative cyclization of o-alkynylphenols with aryldiazonium salts via
dual photoredox/gold catalysis is described. The reaction proceeds smoothly at room
temperature in the absence of base and/or additives and offers an efficient approach to
benzofuran derivatives. The scope of the transformation is wide, and the limitations are
discussed. The reaction is proposed to proceed through a photoredox-promoted generation
of a vinylgold (III) intermediate that undergoes reductive elimination to provide the …
dual photoredox/gold catalysis is described. The reaction proceeds smoothly at room
temperature in the absence of base and/or additives and offers an efficient approach to
benzofuran derivatives. The scope of the transformation is wide, and the limitations are
discussed. The reaction is proposed to proceed through a photoredox-promoted generation
of a vinylgold (III) intermediate that undergoes reductive elimination to provide the …
[引用][C] Dual Photoredox/Gold Catalysis Arylative Cyclization of o-Alkynylphenols with Aryldiazonium Salts: A Flexible Synthesis of Benzofurans
X Zhonghua, K Omar, MM Virginie, O Cyril, F Louis - 2016