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.
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:US05593980A1
公开(公告)日:1997-01-14
This invention provides a new use of acids, esters, and salts of arylmethylphosphonates of Formula I, ##STR1## or a phosphonic acid of Formula II ##STR2## and derivatives 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.
Thuong,N.T. et al., Bulletin de la Societe Chimique de France, 1965, p. 1925 - 1930
作者:Thuong,N.T. et al.
DOI:——
日期:——
Enantioselective synthesis of α-hydroxy phosphonates via oxidation with (camphorsulfonyl)oxaziridines
作者:Diana M. Pogatchnik、David F. Wiemer
DOI:10.1016/s0040-4039(97)00705-3
日期:1997.5
Reaction of phosphonate anions with enantiomerically pure (camphorsulfonyl)oxaziridines results in formation of nonracemic alpha-hydroxy phosphonates. This enantioselective hydroxylation methodology provides convenient access to optically active alpha-hydroxy phosphonates and their corresponding phosphonic acids. (C) 1997 Elsevier Science Ltd.
Chabrier,P. et al., Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1964, vol. 259, p. 2244 - 2247