Palladium(II)-Catalyzed Ortho-Arylation of Benzylic Phosphonic Monoesters Using Potassium Aryltrifluoroborates
摘要:
The new monophosphonic acid directing group was successfully utilized in the Pd (II)-catalyzed orthoarylation of benzylic phosphonic monoesters using potassium aryltrifluoroborates. A wide range of benzylic phosphonic monoesters underwent clean ortho-arylation in high yields, and excellent functional group tolerance was also observed.
Arylmethylphosphonates and phosphonic acids useful as anti-inflammatory
申请人:The Upjohn Company
公开号:US05500417A1
公开(公告)日:1996-03-19
This invention provides a new use of acids, esters, and salts of arylmethylphosphonates of Formula I, ##STR1## or phosphonic acid derivatives of Formula II ##STR2## as anti-inflammatory and anti-arthritic agents. Representative compounds include 4-dodecyloxybenzylphosphonic acid dimethyl ester, (2-naphthalenylmethyl)phosphonic acid dimethyl ester, and ([1,1 '-biphenyl]-2-ylmethyl)phosphonic acid dimethyl ester. The invention also provides novel acids, esters, and salts of arylmethylphosphonic acid, phosphonic acid and derivatives.
Palladium(II)-Catalyzed <i>ortho</i>-Olefination of Benzylic Phosphonic Monoesters
作者:Xiangjian Meng、Sunggak Kim
DOI:10.1021/ol400565r
日期:2013.4.19
The new monophosphonic acid directing group is successfully utilized in the Pd(II)-catalyzed ortho-olefination of benzylic phosphonic monoesters and offers further development of other phosphoryl-related directing groups in the transition-metal-catalyzed C-H activations.
<i>ortho</i>-Acetoxylation of Phosphonic and Phosphoric Monoacids via Pd(II) Catalysis
作者:Li Yan Chan、Xiangjian Meng、Sunggak Kim
DOI:10.1021/jo4011188
日期:2013.9.6
A simple and efficient method is developed for Pd-catalyzed ortho-acetoxylation using organophosphates, namely, benzylic phosphonic and aryl phosphoric monoacids, as the directing group.
Palladium(II)-Catalyzed Ortho-Arylation of Benzylic Phosphonic Monoesters Using Potassium Aryltrifluoroborates
作者:Xiangjian Meng、Sunggak Kim
DOI:10.1021/jo401716p
日期:2013.11.15
The new monophosphonic acid directing group was successfully utilized in the Pd (II)-catalyzed orthoarylation of benzylic phosphonic monoesters using potassium aryltrifluoroborates. A wide range of benzylic phosphonic monoesters underwent clean ortho-arylation in high yields, and excellent functional group tolerance was also observed.