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A convenient one‐pot synthesis of 1,2‐azaphospholanium salts

“…The geometry of 8d is similar to that of previously investigated 1,2,2-triphenyl-1,2λ 4 -azaphospholanium iodide [7]. For example, the lengths of P(1) N(1) bonds are equal to 1.636(4) and 1.644(4)Å, respectively.…”

“…[1,7]). Thus, the presence of the positively charged phosphorus atom results in the stabilization of the planar configuration of the nitrogen.…”

“…Previously we have developed [5][6][7] a general approach to 1,2-heteraphosphacyclanes by intramolecular alkylation of -haloalkyl-substituted compounds of tetracoordinate phosphorus with P E bond 2 ( E = S, NR ). On the basis of this method, a number of N-arylsubstituted 1,2-azaphospholanium and 1,2-azaphosphinanium salts 1 (n = 3, 4) were obtained.…”

Metal Complexes of Phosphorus Compounds Including Indigoid Structure: Synthesis, Characterization, and Biological Study

“…The precipitated solid complexes were filtered, washed several times with ethanol followed by diethylether, and dried in a vacuum desiccator over anhydrous calcium chloride. All metal complexes (1)(2)(3)(4)(5) are received as powder, stable in air, insoluble in common organic solvents but soluble in DMF and DMSO, and give elemental analysis consistent with the proposed structures. Their elemental analysis and some physicochemical characteristic data are collected in Table II …”

“…1,2 Interest in the chemistry of phosphorus-containing heterocyclic compounds is linked with their participation in many biochemical processes, with their use as therapeutic preparations and agents for plant protection, and with use in organic synthesis, metal complex catalysis, and other areas. 3 Over the last decade, the ligands based on the cyclodiphosph(III or V)azane framework have been studied because of their ability to coordinate with main group and transition metals. 4,5 Although, the interaction of hexachlorocyclodiphosph(V)azanes with several functional groups containing compounds has been investigated in great detail, 1,2,4,6−16 the literature survey indicates the absence of analogous reactions with 5,5 indigodisulfonic acid disodium salt (indigo carmine).…”