Double Ligands Enabled Ruthenium Catalyzed ortho-C-H Arylation of Dialkyl Biarylphosphines: Straight and Economic Synthesis of Highly Steric and Electron-Rich Aryl-Substituted Buchwald-Type Phosphines was written by Wang, Liang-Neng;Tang, Pan-Ting;Li, Ming;Li, Jia-Wei;Liu, Yue-Jin;Zeng, Ming-Hua. And the article was included in Advanced Synthesis & Catalysis in 2021.Reference of 5460-32-2 This article mentions the following:
A double-ligands enabled Ru catalyzed C(sp2)-H arylation of dialkyl phosphines is described, which provides a straight access to aryl-substituted dialkyl phosphine ligands. The combination of 1,3-diketone and amino acid ligands is essential for this transformation. An important six-membered cycloruthenium intermediate was successfully isolated and characterized by x-ray diffraction. Mechanistic studies showed that the 1,3-diketone promoted the process of oxidative addition of cycloruthenium intermediate. Some of modified CyJohnPhos ligands exhibited highly catalytic activity in Pd catalyzed C-N bond formation. In the experiment, the researchers used many compounds, for example, 4-Iodo-1,2-dimethoxybenzene (cas: 5460-32-2Reference of 5460-32-2).
4-Iodo-1,2-dimethoxybenzene (cas: 5460-32-2) belongs to iodide derivatives. Organic iodides are widely used in organic synthesis. Halogenation of aromatic hydrocarbons is a very important reaction via an electrophilic aromatic substitution. A typical method for synthesis of aromatic iodides is diazotization of primary aromatic amines followed by treatment of potassium iodide. Aliphatic alcohols are converted to alkyl iodides by treating with hydrogen iodide.Reference of 5460-32-2
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com