Palladium-Catalyzed C(sp<sup>2</sup>)–N Bond Cross-Coupling with Triaryl Phosphates
作者:Zicong Chen、Xiangmeng Chen、Chau Ming So
DOI:10.1021/acs.joc.9b00703
日期:2019.5.17
The first general palladium-catalyzed amination of aryl phosphates is described. The combination of MorDalPhos with [Pd(π-cinnamyl)Cl]2 enables the amination of electron-rich, electron-neutral, and electron-poor aryl phosphates with a board range of aromatic, aliphatic, and heterocyclic amines. Common functional groups such as ether, keto, ester, and nitrile show an excellent compatibility in this
Industrially important triaryl phosphites, traditionally prepared from PCl3, have been synthesized by a diphenyl diselenide-catalyzed one-step procedure involving white phosphorus and phenols, which provides a halogen- and transition metal-free way to these compounds. Subsequent oxidation of triaryl phosphites produces triaryl phosphates and triaryl thiophosphates. Phosphorotrithioates are also prepared
Nickel-Catalyzed Amination of Aryl Phosphates through Cleaving Aryl C–O Bonds
作者:Jin-Hua Huang、Lian-Ming Yang
DOI:10.1021/ol201437g
日期:2011.7.15
amination of triaryl phosphates was achieved using a Ni(II)–(σ-Aryl) complex/NHC catalyst system in dioxane at 110 °C in the presence of NaH as base. Electron-neutral, -rich, and -deficient triaryl phosphates were coupled with a wider range of amine partners including cyclic and acyclic secondary amines, aliphatic primary amines, and anilines in good to excellent yields.
MICROWAVE-ASSISTED SYNTHESIS OF TRIARYL PHOSPHATES
作者:A. D. Sagar、N. A. Shinde、B. P. Bandgar
DOI:10.1080/00304940009355923
日期:2000.6
Patented procedures are also available in the literaturei ‘’ for the synthesis of triarylphosphates. Some of the reported methods have limitations such as (i) drastic reaction conditions,? (ii) liberation of hydrogen chloride which may cause corrosion problems in industrial reactors, (iii) tedious work-up, and (iv) long reaction times. In certain cases, pyridine or dialkylanilines have been used to neutralize
A step-economical and operationally simple nickel-catalyzed cross-electrophile coupling of aryl phosphates with arylbromides through C−O bond cleavage, which precluded the employment of relatively moisture-labile and unreadily available organometallics, was developed. The reaction proceeded smoothly in the presence of magnesium turnings and lithium chloride in THF to afford the corresponding biaryls