Fig. 1: Comparison of different pathways conversing phosphate salts to OPCs.
A Synthesis of OPCs from P4. a Prepared by bulk chemicals such as PCl3, PCl5, POCl3, etc. b An alternative route to directly convert P4 to OPCs. c Prepared by P2O5L2 and P4O10L3 resulted from P2O5. B Synthesis of OPCs from phosphate. d Prepared by valence-active intermediates from reducing phosphates. e, f Prepared by redox-neutral phosphate conversion strategy. C This work (gray box) presents an approach that converts phosphates into P–X reagents for synthesizing a variety of OPCs. A suggested mode of enhancing the solubility and reactivity of phosphate with TBAC is an example (D).
