Rhenium(VII) Oxo−Alkyl Complexes:  Reductive and α-Elimination Reactions

Methyltrioxorhenium and its applications in olefin oxidation, metathesis and aldehyde olefination

“…However, neither the rhenium carbene nor the metallacycle could be directly observed. However, rhenium(VII) carbenes could be generated independently already before, but have never been applied as catalysts or carbene transfer reagents for the aldehyde olefination [132][133][134][135]. Therefore, based on the work of Espenson et al [136][137][138] another mechanistic suggestion was made for the MTO/MDO based olefination of aldehydes by Abu-Omar et al (Scheme 5) [24].…”

Methyltrioxorhenium heterogenized on commercially available supporting materials as cyclooctene metathesis catalyst

“…A surface compound of similar composition is considered to be a plausible candidate for the catalytic active species in heterogeneous MTO catalyzed metathesis reactions by some researchers (see Scheme 1) [32][33][34][35][36]. Isolated and fully characterized Rhenium carbene complexes featuring Re in high oxidation states and displaying also oxo ligands attached to the rhenium carbene moiety are, however, still quite rare [37][38][39][40]. Nevertheless, the application of MTO as heterogeneous metathesis catalyst is of significant interest, due to the very easy synthetic accessibility and the usually high stability of this organometallic compound [41,42].…”

Aminotroponiminate Zinc Complexes with Different Leaving Groups as Catalysts for the Intramolecular Hydroamination of Alkenes

“…The NMR signals for the Ph‐Zn group are not very significant. They are slightly shifted upfield/downfield compared to the starting material Ph 2 Zn 17. In general the compounds are volatile and show intense molecular peaks in the MS spectrum.…”