Synthesis of New Chiral Crown Ethers Containing Phosphine or Secondary Phosphine Oxide Units

Abstract

The transition-metal complexes of phosphine and secondary phosphine oxide compounds can be used in various catalytic reactions. In this paper, the synthesis and characterization of eight new crown ethers containing trivalent phosphorus in their macroring are reported. These macrocycles are promising candidates as ligands for catalytic reactions.

Tf2O/DMSO-mediated dual activation of aryl phosphinate to access various aryl phosphonates

“…Aryl phosphonates are an important class of organophosphorus compounds (OPCs), which have attracted continuous interest from chemists due to their extensive applications in diverse areas, ranging from medicinal chemistry to materials sciences. 1 In particular, aryl phosphonates have also been widely used as building blocks, 2 ligands 3 and synthetic intermediates 4 in organic chemistry. Therefore, considerable efforts have been devoted to the development of efficient and convenient methods for the preparation of various aryl phosphonates over the past few decades.…”