Cobalt complexes in [EMIM]Cl - A catalyst for oxidation of alcohols to carbonyls

Inorganic Chemistry Communications

Volumn 13, Issue 1, 2010, Pages 195-198

  Ramakrishna, Dileep ^a   Ramachandra Bhat, Badekai ^a  

^a NATIONAL INSTITUTE OF TECHNOLOGY KARNATAKA   (India)

Author keywords

Catalytic oxidation; Co(II) complexes; Green oxidation; Schiff base

Indexed keywords

EID: 72249112352     PISSN: 13877003     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.inoche.2009.11.014     Document Type: Article

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35. The reaction product analysis was carried out using gas chromatography (GC) (Shimadzu 2014, Japan); the instrument has a 5% diphenyl and 95% dimethyl siloxane Restek capillary column (30 m length and 0.25 mm diameter) and a flame ionization detector (FID). The initial column temperature was increased from 60 °C to 150 °C at the rate of 10 °C/min and then to 220 °C at the rate of 40 °C/min Nitrogen gas was used as the carrier gas. The temperatures of the injection port and FID were kept constant at 150 °C and 250 °C, respectively during product analysis. The retention times for different compounds were determined by injecting commercially available compounds under identical gas chromatography conditions. The oxidation products are commercially available, and were identified by GC co-injection with authentic samples.
36. A solution of cobalt (II) complex (0.02 mmol) in 0.1 mL ethyl-methyl-imidazolium (EMIM) ionic liquid was added to the solution of substrate (1 mmol) and NaOCl (1 mmol). The mixture was stirred at room temperature. At the requisite times aliquots of the reaction mixture were removed and the alcohol and aldehyde/ketone extracted with ether. The ether solution was then analyzed by GC.