Preparations and Use of RuOJ

This may be nsed for oxidations in aqneons base of primary alcohols, aldehydes, activated alkyl halides, ctT-diols and nitroalakanes to carboxylic acids, and of secondary alcohols and secondary halides to ketones. 

To a solntion of RnClj (0.008 g, 0.03 mmol) in water (3 cm ), prepared some 12 h in advance, is added an aqueous solution of K IS O ) (0.7 g, 2.6 mmol) or the more solnble Na2(S20g) in M KOH or NaOH (50 cm ) with stirring. This gives a deep orange-red solntion of [RuO ] at pH 14 the electronic spectrum should have bands at 466 and 386 nm [213]. 

A useful example is the oxidative dehydrogenation of primary amines to nitriles. The amine (2 mmol) is added dropwise or in small portions to a vigoronsly stirred solutuion of [RnO ] prepared as above (100 cm ) the reaction is complete when the dark orange colonr of [RuO ] reappears. The solution is extracted with dieth-ylether (3x25 cm ), dried over MgSO and the ether removed [549]. 

Seddon EA, Seddon KR (1984) The chemistry of ruthenium. Elsevier, Amsterdam 

Bergmann H et al (1970) In Schleitzer-Steinkopf E (ed) Gmelins Handbuch der Anorganischen Chemie. Verlag Chemie, Weinheim 

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