A novel task-specific ionic liquid for Beckmann rearrangement: A simple and effective way for product separation

Tetrahedron Letters

Volumn 45, Issue 12, 2004, Pages 2681-2683

  Gui, Jianzhou ^a   Deng, Youquan ^b   Hu, Zhide ^a   Sun, Zhaolin ^a,c  

^a LANZHOU UNIVERSITY   (China)

^b LANZHOU INSTITUTE OF CHEMICAL PHYSICS   (China)

^c LIAONING UNIVERSITY   (China)

Author keywords

Beckmann rearrangement; Extraction; Ketoxime; Task specific ionic liquid

Indexed keywords

CAPROLACTAM; CYCLOHEXANONE; CYCLOHEXANONE OXIME; ION; ORGANIC SOLVENT; OXIME; SULFUR DERIVATIVE; UNCLASSIFIED DRUG; WATER;

ARTICLE; BECKMANN REARRANGEMENT; EXTRACTION; LIQUID; MISCIBILITY; REACTION ANALYSIS; SEPARATION TECHNIQUE; SOLUBILITY;

EID: 1542332371     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2004.01.131     Document Type: Article

References (14)

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11. To confirm the hydrolysis stability of TISC, 5 g of TISC and 5 g of water were heated to 80°C. Sample was taken at 15 min intervals and the pH value of the solution was checked with a pH indicator from Shanghai. No decrease of pH value was determined during 6 h, indicating that TISC did not hydrolyze.
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14. Solubility in water: In a 10 mL polypropylene centrifuge tube, 1.00 g of the TISC and 2.5 mL of deionized water were shaken on a vortex mixer for 30 min and centrifuged for 20 min. A 10 μL aliquot of the aqueous phase was removed with a microsyringe and diluted to 2.5 mL with deionized water. The absorbance of this solution at 211 nm was measured by UV-vis spectrophotometer (Perkin-Elmer Lamda 900) and compared with that obtained from dissolving a weighed amount (1-9 mg) of the TISC in 2.5 mL of deionized water.