Di‐μ‐Chloro‐Bis(η ⁴ ‐1,5‐Cyclooctadlene) Dirhodium(I)

1Pyridine and phosphine functionalised N-heterocyclic carbene complexes of rhodium and iridium

“…40-60°C. The starting materials [Rh(COD)(l-Cl)] 2 [6] [Rh-(COE)2(l-Cl)] 2 [7], [Rh(COD)(l-OMe)] 2 [8], [Rh(COE) 2 -acac] [9], and [Ir(COD)(l-H)(l-Cl) 2 ] 2 [10] as well as the phosphine imidazolium bromides (PCH 2 CH 2 C mes H)-Br and (PCH 2 CH 2 C DIPP H)Br [2c] (PCH 2 C mes )Br, (PCH 2 C DIPP )Br [11] and the pyridine functionalised NHC NC DIPP [12] were prepared according to the literature procedures.…”

Rh(I)-catalyzed CO gas-free carbonylative cyclization of organic halides with tethered nucleophiles using aldehydes as a substitute for carbon monoxide

“…Unfortunately, no carbonylated product was obtained for the reaction of o-iodobenzylacetoacetate 25 (entries [10][11][12]. The reaction was tolerant with respect to the synthesis of six-and sevenmembered ketones, 28 and 30 (entries [13][14][15][16][17][18]. In addition to iodobenzenes, the reaction of an alkenyl iodide 31 containing a malonate unit proceeded to give 2-cyclopentenone 32 although in low yields (entries 19-21).…”

“…Xylene was distilled from LiAlH 4 and stored over molecular sieves 4 Å . [RhCl(cod)] 2 was prepared using the method reported [14].…”

Synthesis of Substituted Phenols by Using the Ring‐Closing Metathesis/Isoaromatization Approach

“…A rhodium complex, [RhClA C H T U N G T R E N N U N G (cod)] 2 was prepared according to the reported procedure. [19] 2-Methylene-5-hexenals 6 were prepared by Mannich/Hofmann degradation from corresponding 5-hexenals 7 according to the reported procedures. [20] 2-Bromo-5-phenyl-1,5-hexadiene (8 g) was prepared by allylation of 2,3-dibromo-1-propene with 2-phenylallylmagnesium bromide and copper cyanide analogously to the reported procedure.…”