468083-38-7

Upstream product

• 109-99-9 tetrahydrofuran 
• 142939-90-0 fac-tricarbonyl(2,2'-bipyridine)triflatorhenium(I) 
• 79060-88-1 sodium tetrakis[(3,5-di-trifluoromethyl)phenyl]borate 

Downstream Products

• 234448-73-8 [Re(2,2'-bipyridine)(C_.ident.C-C₆H₅)] 
• 956015-90-0 Re(CO)3(bipyridyl)(3,5-(pz3CCH₂OCH₂)2C₆H₃) 

Relevant academic research and scientific papers

A thallium mediated route to σ-arylalkynyl complexes of bipyridyltricarbonylrhenium(I)

A simple, one-pot preparation of rhenium(I) σ-arylalkynyl complexes is reported using thallium(I) hexafluorophosphate as a halogen abstraction agent. This new route to rhenium σ-alkynyls enjoys higher yields compared to analogous preparations using silver salts by eliminating potential electrochemical degradation pathways.

New synthetic routes to cationic rhenium tricarbonyl bipyridine complexes with labile ligands

Triflate abstraction from the complex [Re(OTf)(CO)3(bipy)] (1) using the salt NaBAr′4 (Ar′ = 3,5-bis(trifluoromethyl)phenyl) in dichloromethane solution in the presence of L = PPh3, NCMe, NCPh, imines, ketones, Et2O, THF, MeOH, and Mel affords cationic complexes [Re(L)(CO)3(bipy)]+ as their BAr′4-salts. The new complexes have been characterized spectroscopically and, for [Re(η1-O=C(Me)R)(CO)3(bipy)]BAr′4 (R = CH3, 6a; R = Ph, 6b), and [Re(THF)(CO)3(bipy)] BAr′4 (9), also by single-crystal X-ray diffraction. Compared with conventional methodologies, the route reported here allows the coordination of a broader range of weakly coordinating ligands and requires considerably milder conditions. On the other hand, the reactions of lithium acetylides with [Re(THF)(CO)3(bipy)]BAr′4 (9) can be used for the high-yield syntheses of rhenium alkynyls [Re(C≡CR)(CO)3(bipy)] (R = Ph, 12; R = SiMe3, 13). Complex 9 was found to catalyze the aziridination of benzylideneaniline with ethyl diazoacetate.