WebSep 1, 2000 · The values of φ cr decrease in the order CpRh(CO) 2 > Cp‘Rh(CO) 2 > Cp*Rh(CO) 2 ≫ (acac)Rh(CO) 2 > (ind)Rh(CO) 2 and vary by over 3 orders of magnitude depending on the complex chosen and the excitation wavelength employed. The results obtained indicate that the photoefficiencies of these complexes are predominantly … WebApr 15, 2024 · Chiral cyclopentadienyl rhodium (CpRh) complex-catalyzed asymmetric C−H functionalization reactions have witnessed a significant progress in organic synthesis. In sharp contrast, the reported chiral Cp ligands are limited to C-linked Cp and are often synthetically challenging.
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WebSep 2, 1986 · Irradiation of CpRh(C2H4)CO in a methane matrix at 20 K, X 229 nm, results in a new band at 1169 cm ~again assignable to CpRh(C2H4), a new terminal v(CO) band, 2024 cm1, and bands due to free ethene (954 cm1) and free CO (2139 cm1). Prolonged photolysis at 229 nm causes an increase in all products, irradia- tion at X 436 nm results … WebApr 3, 2024 · The asymmetric synthesis of alkynyl and monofluoroalkenyl isoindolinones from N-methoxy benzamides and α,α-difluoromethylene alkynes is enabled by C-H … WebJul 19, 2024 · Despite extensive research on transition metal-catalyzed Fujiwara–Moritani type C–H olefinations, the alkenes used in these transformations are still mainly limited to active acrylate esters and styrenes. Selective aryl C–H olefination with electron-rich alkenes is recognized as a challenging issue. We herein report that simple and readily accessible … bty532