73473-94-6

Downstream Products

• 1351530-55-6 1,3-di-[(4S,5S)-2,2,4-triphenyl-1,3-dioxacyclohex-5-yl]imidazolium perchlorate 
• 1351530-49-8 (4S,5S)-5-amino-2,2,4-triphenyl-1,3-dioxacyclohexane 
• 73473-97-9 (2S,4S,5S)-5-amino-2-tert-butyl-2,4-diphenyl-1,3-dioxacyclohexane 
• 1351530-53-4 1,3-di-[(2R,4S,5S)-2-(1-naphthyl)-4-phenyl-1,3-dioxacyclohex-5-yl]imidazolium perchlorate 
• 1351530-48-7 (2R,4S,5S)-5-amino-2-(1-naphthyl)-4-phenyl-1,3-dioxacyclohexane 
• 73473-95-7 (2R,4S,5S)-5-amino-2,4-diphenyl-1,3-dioxacyclohexane 
• 1351530-51-2 1,3-di-[(2R,4S,5S)-2,4-diphenyl-1,3-dioxacyclohex-5-yl]imidazolium perchlorate 
• 73474-00-7 (2R,4S,5S)-(+)-5-Benzylidenamino-2,4-diphenyl-1,3-dioxan 

Relevant academic research and scientific papers

Synthesis and characterization of chiral mono N-heterocyclic carbene-substituted rhodium complexes and their catalytic properties in hydrosilylation reactions

Different chiral mono-substituted N-heterocyclic carbene complexes of rhodium were prepared, starting from [Rh(COD)Cl]2 (COD = cyclooctadiene) by addition of free N-heterocyclic carbenes (NHC), or an in-situ deprotonation of the corresponding iminium salt. All new complexes were characterized by spectroscopy methods. In addition, the structures of chloro(η4-1,5-cyclooctadiene)(1,3-di-[(1R,2R,3R,5S)-2,6, 6-trimethylbicyclo[3.1.1]hept-3-yl] imidazolin-2-ylidene)rhodium(I) (5a), chloro(η4-1,5-cyclooctadiene)(1,3-di-[(1R,2S,5R) -2-isopropyl-5-menthylcyclohex-1-yl]imidazol-2-ylidene)rhodium(I) (5b) and chloro(η4-1,5-cyclooctadiene)(1,3-di-[(2R,4S,5S) -2-methyl-4-phenyl-1,3-dioxacyclohex-5-yl]imidazolin-2-ylidene)rhodium(I) (5i) were analyzed by DFT-calculations. The enantioselective hydrosilylation of acetophenone, ethylpyruvate and n-propylpyruvate with diphenylsilane and hydrolysis was carried out with chiral C2-symmetrical mono-substituted N-heterocyclic carbene rhodium complexes giving for the first time an enantioselective excess of up to 74% ee in the case of the n-propylpyruvate.