Rhodium catalysis hydroboration

Some other catalytic events prompted by rhodium or ruthenium porphyrins are the following 1. Activation and catalytic aldol condensation of ketones with Rh(OEP)C104 under neutral and mild conditions [372], 2. Anti-Markovnikov hydration of olefins with NaBH4 and 02 in THF, a catalytic modification of hydroboration-oxidation of olefins, as exemplified by the one-pot conversion of 1-methylcyclohexene to ( )-2-methylcycIohexanol with 100% regioselectivity and up to 90% stereoselectivity [373]. 3. Photocatalytic liquid-phase dehydrogenation of cyclohexanol in the presence of RhCl(TPP) [374]. 4. Catalysis of the water gas shift reaction in water at 100 °C and 1 atm CO by [RuCO(TPPS4)H20]4 [375]. 5. Oxygen reduction catalyzed by carbon supported iridium chelates [376]. - Certainly these notes can only be hints of what can be expected from new noble metal porphyrin catalysts in the near future. 

Ammonia N-donor Ligands Asymmetric Synthesis by Homogeneous Catalysis Decarbonylation Catalysis Hydride Complexes of the Transition Metals Hydroboration Catalysis Hydrogenation Isomerization of Alkenes Hydrosilation Catalysis P-donor Ligands Rhodium Organometallic Chemistry. 

One computational study see Molecular Orbital Theory) has appeared using RhCl(PH3)2 to model the rhodium-catalyzed hydroboration of ethylene see Hydroboration Catalysis). Both associative and dissociative pathways were examined (equation 47). In the associative path, three possible... 

Schnyder A, Togni A, Wiesli U (1997) Electronic effects in asymmetric catalysis. Synthesis and structure of model rhodium complexes containing ferrocenyl ligtmds for use in the hydroboration reaction. Organometallics 16 255-260... 

JJJ Juliette, IT Horvath, JA Gladysz. Transition metal catalysis in fluorous media practical application of a new immobilization principle to rhodium-catalyzed hydroboration. Angew Chem hit Ed Engl 36 1610-1612, 1997. 

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