Adams' catalyst in poly(ethylene glycol) (PEG) (400) has been found to be a superior solvent over the ionic liquids by severalfold in promoting the hydrogenation of various functional groups. Both the catalyst and PEG were recycled efficiently over 10 runs without loss of activity, and substrate cross contamination was not observed despite a change in the substrate four times.
Tantalum(V) chloride has been demonstrated as an efficient catalyst in ring opening of epoxides with aromatic amines for the synthesis of b-amino alcohols for the first time.
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