Using “click” chemistry to access a new class of tripodal P3-ligand containing PC bonds

Abstract

High yielding "click" reactions between phosphaalkynes and organo-triazides have afforded examples of tris(triazaphosphole)s, the utility of which as a new class of tripodal P(3)-ligand has been demonstrated with the preparation of an unusual diplatinum complex.

Recent Developments in the Chemistry of Pyridyl-functionalized, Low-coordinate Phosphorus Heterocycles

“…4 Interestingly, while the analogous donorfunctionalized all-nitrogen-containing triazoles have been investigated intensively in coordination chemistry during the last decade, 49 the synthesis and coordination chemistry of donorfunctionalized, chelating 3H-1,2,3,4-triazaphosphole derivatives remains practically unknown. 50 Only one example has so far been characterized crystallographically, where a tripodal tris(triazaphosphole) acts as a tridentate ligand with P-coordination toward a Pt(0) center, as reported by Jones et al 51 On the basis of these findings, the preparation of the pyridyl-functionalized, chelating triazaphospholes 37 and 38 Scheme 10. Synthesis of a phosphorus derivative of terpyridine.…”

Recent Developments in the Chemistry of 3H‐1,2,3,4‐Triazaphos­phole Derivatives

“…Nevertheless, the first two examples of 1,2,3,4‐triazaphosphole–metal complexes have been been reported by Jones et al recently 43. With the tridentate ligand 28 (Scheme ), coordination of the three triazaphosphole moieties through the phosphorus atoms to a Pt 0 center with formation of 59 has been observed (Figure 11).…”

Nitrogen, phosphorus, arsenic, antimony and bismuth

“…''Click'' reactions between organoazides and phosphaalkynes have been shown to be a useful tool to prepared tripodal ligands with PQC bonds. 60 Phosphaalkenes have also been employed as ligands in the gold-catalysed cyclisation of 1,6-enynes. 61 The crystal structures of a range of diphosphenes RPQPR have been carefully evaluated as disorder of the two phosphorus atoms may occur giving spurious PQP bond lengths.…”