Differentially Substituted Phosphines via Decarbonylation of Acylphosphines
作者:Rongrong Yu、Xingyu Chen、Stephen F. Martin、Zhiqian Wang
DOI:10.1021/acs.orglett.7b00579
日期:2017.4.7
A new route to phosphines was developed by a method that features a “pre-join and transform” process that proceeds via acylphosphine intermediates that may be readily prepared from carboxylic acids and disubstituted phosphines. The efficient decarbonylations of these acylphosphines using a nickel catalyst delivered the corresponding phosphines. This method shows that the carboxyl group can play a role
BBr
<sub>3</sub>
‐Mediated P(III)‐Directed C−H Borylation of Phosphines
作者:Jiahang Lv、Xue‐Jun Zhang、Minyan Wang、Yue Zhao、Zhuangzhi Shi
DOI:10.1002/chem.202104100
日期:2022.2.16
Boron Chemistry. An efficient metal-free system has been uncovered for the site-selective C−H borylation of phosphines directed by P(III) atom just using BBr3. This robust method enables the rapid construction of phosphine boronate esters in selective, practical, low-cost, and environmentally friendly modes.
Ru(II)-catalyzed direct alkylation of tertiaryphosphines via hydroarylation of activated olefins promoted by mono-N-protected amino acid (MPAA) was achieved. This protocol provides a straightforward access to a large library of Buchwald-type bulky alkylated monophosphines from commercially available biaryl phosphine. Moreover, two ruthenacycle intermediates of tertiaryphosphines via C-H bond cleavage
Rh
<sup>I</sup>
‐Catalyzed P
<sup>III</sup>
‐Directed C−H Bond Alkylation: Design of Multifunctional Phosphines for Carboxylation of Aryl Bromides with Carbon Dioxide
作者:Zhuan Zhang、Thierry Roisnel、Pierre H. Dixneuf、Jean‐François Soulé
DOI:10.1002/anie.201906913
日期:2019.10
We report the C-H alkylation of biarylphosphines at the ortho' position(s) with alkenes by using rhodium(I) catalysis, which provides straightforward access to a large library of multifunctionalized phosphines. Some of these modified ligands outperformed commercially available phosphines in the Pd-catalyzed carboxylation of aryl bromides with carbon dioxide in the presence of a photoredox catalyst
Rhodium-Catalyzed, Phosphorus(III)-Directed Hydroarylation of Internal Alkynes: Facile and Efficient Access to New Phosphine Ligands
作者:Minyan Wang、Zhuangzhi Shi、Huanhuan Luo、Dawei Wang
DOI:10.1055/a-1314-0064
日期:2022.3
of newphosphines through Rh- or Ru-catalyzed C–H bond functionalizations, synthetic access to more diverse phosphines remains a challenge. We describe an efficient process for the rhodium-catalyzed phosphorus(III)-directed hydroarylation of internal alkynes to generate various alkenylated and 2′,6′-dialkenylated biarylphosphines with high selectivity. A range of diverse alkynes and phosphines were