Document Detail


Synthesis and photochemistry of 1-iodocyclohexene: influence of ultrasound on ionic vs. radical behaviour.
MedLine Citation:
PMID:  17846569     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Simultaneous application of UV light and ultrasonic irradiation to a reaction mixture containing 1-iodocyclohexene is reported. The irradiation of 1-iodocyclohexene in methanol was carried out with or without addition of zinc. The effect of ultrasound or mechanical stirring on this solid-liquid system was also compared. The irradiation of 1-iodocyclohexene in methanol in the presence of zinc increases the yield of the nucleophilic trapping product, compared with the yield after irradiation in the absence of zinc. The photodegradation of 1-iodocyclohexene was slightly accelerated after addition of zinc. A rapid formation of radical product was accompanied by substantial decrease of 1-iodocyclohexene after application of ultrasound and irradiation without the zinc. The ultrasound significantly affects the photobehaviour of this reaction, predominantly its radical route. The joint application of ultrasound and zinc contributes positively to the production of radical and ionic products. The sonochemical stirring is more effective than mechanical stirring.
Authors:
Marika Blaskovicova; Anton Gaplovsky; Jaroslav Blasko
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2007-02-16
Journal Detail:
Title:  Molecules (Basel, Switzerland)     Volume:  12     ISSN:  1420-3049     ISO Abbreviation:  Molecules     Publication Date:  2007  
Date Detail:
Created Date:  2007-09-11     Completed Date:  2007-10-23     Revised Date:  2009-10-27    
Medline Journal Info:
Nlm Unique ID:  100964009     Medline TA:  Molecules     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  188-93     Citation Subset:  IM    
Affiliation:
Institute of Chemistry, Faculty of Natural Sciences, Comenius University, Mlynska dolina CH-2, SK-842 15, Bratislava, Slovakia. noskova@fns.uniba.sk
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MeSH Terms
Descriptor/Qualifier:
Chromatography, Gas
Cyclohexenes / chemical synthesis,  chemistry*
Free Radical Scavengers / pharmacology
Iodine Compounds / chemical synthesis*,  chemistry*
Magnetic Resonance Spectroscopy
Mechanics
Methanol
Molecular Structure
Photochemistry*
Sonication
Ultrasonics*
Ultraviolet Rays
Zinc / pharmacology
Chemical
Reg. No./Substance:
0/Cyclohexenes; 0/Free Radical Scavengers; 0/Iodine Compounds; 67-56-1/Methanol; 7440-66-6/Zinc

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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