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Utilization of ultrasound for the synthesis of 4-substituted 2,2,6,6-tetramethylpiperidinyloxyls

V. Kaliská, Š. Toma, and A. Tkáč

Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, CS-842 15 Bratislava

 

Abstract: Sonication facilitates the synthesis and accelerates the yields of 4-sub­stituted 2,2,6,6-tetramethylpiperidinyloxyls. This effect is highly pronoun­ced on the substrates with a long lipophilic chain in position 4. The influence of solvent and temperature on the yield of the reaction has been studied. H202 oxidation of the piperidine derivatives promoted by ultrasonic irradiation has been successful also without catalyst.

Full paper in Portable Document Format: 422a243.pdf

 

Chemical Papers 42 (2) 243–248 (1988)

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