A mixture of tris(propenyl)phosphinoxides: A new effective collector reagent for copper-nickel ore flotation

Elemental phosphorus in strongly basic media as phosphorylating reagent: a dawn of halogen-free ‘green’ organophosphorus chemistry

“…Tertiary phosphine oxides of the above origination bearing benzyl or 5-chloro-2-thienyl radicals react with alkyl, aromatic or heteroaromatic aldehydes under conditions of Wittig-Horner reaction to deliver stereoselectively (in high yields) E-isomers of alkenes, stylbenes or their heteroanalogs along with corresponding diorganophosphinic acids. 41 Among the wide range of novel organophosphorus compounds thus synthesized, ligands for the design of catalytically and biologically prospective metallocomplexes, 1(f),9(d),42 flameretardants, 2(a) extractants of rare-earth and transuranium elements 3 (d) and effective reagents for flotation processes 43 have been found.…”