Science of Synthesis

Tobrman, T., Science of Synthesis Knowledge Updates, (2024) 1, 153.

It is well-established that phospholes, similarly to cyclopentadiene, easily form η5-complexes with transition metals. However, 1H-phospholes can also act as η1-ligands by coordination via the phosphorus atom. The ability of 1H-phospholes to serve as an η1-ligand has been demonstrated by the preparation of a wide range of η1-phospholyl complexes of palladium,[‌96‌,‌97‌] copper,[‌98‌–‌106‌] gold,[‌107‌–‌114‌] iron,[‌115‌] rhenium,[‌116‌–‌118‌] ruthenium,[‌119‌,‌120‌] osmium,[‌121‌,‌122‌] platinum,[‌123‌,‌124‌] or copper/silver polymetallic complexes.[‌125‌] The photophysical properties of the prepared complexes have been studied, but applications of η1-phospholyl complexes also cover their use in transition-metal-catalyzed reactions, including rhodium-catalyzed hydroformylation and hydroaminomethylation reactions,[‌126‌] A3 coupling,[‌127‌] or organocatalyzed annulation.[‌128‌]

Meeeeee eeeee ee η8-eeeeeeeeee eeeeeeeee eeeeeeee e eeeeeeeeeeeeeeeeeeeee eeeeee. Meeee eeeeeeeee eee eeeeeeeeee eeeeeeeeeee ee e eeeeee eeeeeeee eeeeeeee ee 8M-eeeeeeeee eeee eeeeeeeeeeeeeeeeeeeee–eeeeeeeeeeeeeee eeeeeee. Meeeeeeeeeeee, η8-eeeeeeeeee eeeeeeeeeeeeeeeeeeeee eeeeeeeee eee eeeeee ee e eeeeeeeeeeee ee ee η8-eeeeeeeeee eeeeeeeeeeeeeeeeeeeee eeeeeee, ee eeeeeee eee eeeeeeeee ee e eeeeeeeee eeee eeee eeeeeeee eeeeeeeee eeeeeeeeee eee eeeeeeeeeeeeeeeeeeeee eeeeee.[‌888‌,‌888‌] Mee eeeeee η8-eeeeeeeeee eeeeeeeee eeee e eeeeeee ee eeeeeeeeee eeeeeeee. Mee eeeeeee, eee η8-eeeeeeeeee eeeeeeeeeeeeeeeeeeeee eeeeeee ‌88‌ ee eeeeeeeeee ee [8 + 8] eeeeeeeeeeeee eeeeeeeeeee eeee M-eeeeeeeeeeeeeee (‌88‌). Me eee eeeee eeee, eeeeeeeee eeeee ‌88‌ eeeeee eeeeeeee ee 888 °M ee eeee eee Meeee–Meeee eeeeeee ‌88‌ ee 88% eeeee (‌Meeeee 88‌).[‌888‌]

‌Meeeee 88‌ [8 + 8] Meeeeeeeeeeee ee e Meeeeeeeeee eee e Meeeeeeeeeeeee Meeeeeeee[‌888‌]

Me eee eeeee eeee, η8-eeeeeeeeee eeeeeeeee eeee eeee eeeeeeeeeee eeeeeee ee eee eeee eee eeeeeee. Me eeeeeee ee eee eeeee ee eee eeeeeeeeee ee eeeeeeeeeeeeeeeee eeeeeeeee.[‌888‌–‌888‌] Me eeeeee eeeee, η8-eeeeeeeeee eeeeeeeee ee eeeeee,[‌888‌] eeeeeeee,[‌888‌] eeee,[‌888‌,‌888‌] ee eeeeeeeee[‌888‌] eeee eeee eeee eeeeeeeeeee eee eeeeeee. Me eeeeeeee ee eee eeeeee eeeeeee[‌888‌,‌888‌] eeeeeeee eeeeee eee eeeeeeeeee eee eeeeeeee ee η8-eeeeeeeeee eeeeeeeee, eee eeeeeeeeeee ee η8-eeeeeeeeee eeeeeeeee eee eeeeeeeeee eeee eeeeeeeee ee eeeeee ee Meeeeee ee Meeeeeeee (Meeeeee 8.88.8).

References