DCC–Celite hybrid immobilized solid support as a new, highly efficient reagent for the synthesis of O-alkyl hydrogen alkylphosphonates under solvent-free conditions
An efficient and solvent-free synthesis of O-alkyl hydrogen alkyl phosphonates is described. The methodology involves the condensation of alkyl phosphonic acids using DCC-Celite under solvent-free conditions. (c) 2008 Elsevier Ltd. All rights reserved.
Micromachined Gas Chromatography Columns For Fast Separation of Organophosphonate and Organosulfur Compounds and Methods for Deactivating Same
申请人:Masel Richard I.
公开号:US20090211452A1
公开(公告)日:2009-08-27
Improved microcolumns and methods for producing microcolumns particularly suitable for use in gas chromatographs are disclosed. In particular, following deposition of the stationary phase coating, the microcolumns are subjected to a postcoating treatment with a molecule that binds to the active sites in the stationary phase column thereby eliminating or reducing loss of gas chromatograph performance associated with those active sites. The postcoating treatment molecule binds to the same active sites as the analytes of interest.