1261896-19-8Relevant articles and documents
Copper-catalyzed regioselective C-H aerobic oxidative cycloetherification of o -arylphenols bearing an additional directing group
Zhao, Jiaji,Wang, Yong,Zhu, Qiang
supporting information; experimental part, p. 1551 - 1555 (2012/06/16)
An efficient copper-catalyzed C-H oxidative cycloetherification of o-arylphenols containing an additional directing group under an oxygen atmosphere was developed. 2,6-Disubstituted dibenzofuran derivatives were prepared by regioselective activation of the sterically more hindered C-H bond. The presence of the extra directing group not only controls the regioselectivity, but also increases the cyclization efficiency significantly.