18213-90-6Relevant articles and documents
Oxidative Dehydrosulfurative Carbon-Oxygen Cross-Coupling of 3,4-Dihydropyrimidine-2-thiones with Aryl Alcohols
Phan, Trong Nguyen Huu,Lee, Jihong,Shin, Hyunik,Sohn, Jeong-Hun
, p. 5423 - 5430 (2021/05/05)
A Pd-catalyzed/Cu-mediated oxidative dehydrosulfurative carbon-oxygen cross-coupling reaction of 3,4-dihydropyrimidin-1H-2-thiones (DHPMs) with aryl alcohols is described. Due to the ready availability of diverse DHPMs and aryl alcohols, the reaction method offers facile access to biologically and pharmacologically valuable 2-aryloxypyrimidine derivatives with rapid diversification.
Ruthenium-catalysedmeta-selective CAr-H bond alkylationviaa deaminative strategy
Zhu, Ze-Fan,Chen, Guang-Le,Liu, Feng
supporting information, p. 3411 - 3414 (2021/04/07)
The use of aliphatic amines as alkylating reagents in organic synthesisviaC-N bond activation remains underdeveloped. We herein describe a novel ruthenium-catalysed and directing-group assisted protocol for the synthesis ofmeta-alkylated arenesviadual C-H and C-N activation. Bench-stable and easily handled redox-active Katritzky pyridinium salts derived from abundant amines and amino acid species were used as alkyl radical precursors. This catalytic reaction could accommodate a broad range of functional groups and provide access to variousmeta-alkylated products.
Synthesis of m-Alkylphenols via a Ruthenium-Catalyzed C-H Bond Functionalization of Phenol Derivatives
Li, Gang,Gao, Panpan,Lv, Xulu,Qu, Chen,Yan, Qingkai,Wang, Ya,Yang, Suling,Wang, Junjie
supporting information, p. 2682 - 2685 (2017/05/24)
The first example of the synthesis of m-alkylphenols via a ruthenium-catalyzed CAr-H bond functionalization of phenol derivatives with sec/tert-alkyl bromides is reported. Mechanistic studies indicated that the m-CAr-H bond alkylation may involve a radical process and that a six-membered ruthenacycle complex was the active catalyst. Moreover, this approach can provide an expedited strategy for the atom-/step-economical synthesis of many noteworthy pharmaceuticals and other functional molecules.
