Base- and Additive-Free Ir-Catalyzed <i>ortho</i>-Iodination of Benzoic Acids: Scope and Mechanistic Investigations
作者:Elis Erbing、Amparo Sanz-Marco、Ana Vázquez-Romero、Jesper Malmberg、Magnus J. Johansson、Enrique Gómez-Bengoa、Belén Martín-Matute
DOI:10.1021/acscatal.7b02987
日期:2018.2.2
A protocol for the C–H activation/iodination of benzoic acids catalyzed by a simple iridium complex has been developed. The method described in this paper allows the ortho-selective iodination of a variety of benzoic acids under extraordinarily mild conditions in the absence of any additive or base in 1,1,1,3,3,3-hexafluoroisopropanol as the solvent. The iridium catalyst used tolerates air and moisture
Biphenyl derivatives, process for preparing the same and intermediates therefor
申请人:TANABE SEIYAKU CO., LTD.
公开号:EP0401125A2
公开(公告)日:1990-12-05
Novel biphenyl derivatives of the formula:
wherein R¹ is a substituted or unsubstituted aminocarbonyl group, aminothiocarbonyl group, a substituted or unsubstituted lower alkoxycarbonyl group, cyano group, or a group of the formula:
one or two of R² to R⁷ are hydrogen atom, and the remaining groups are the same or different and are each a lower alkoxy group, a phenyl(lower)alkoxy group or hydroxy group, or the adjacent two groups thereof combine to form a lower alkylenedioxy group, and Alk¹ is a lower alkylene group, or a pharmaceutically acceptable salt thereof, which are useful for the prophylaxis and treatment of hepatic diseases, and processes for preparing the same, and intermediates therefor.