GroovyDoo
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Chloromethylation of 1,3-Benzodioxole (Chinese article)
Hello everyone!
I found an chinese article about chloromethylation of 1,3-Benzodioxole in the presence of micellar catalysts.
I don't understand this language, need translation. 
Can anybody help?
Abstract:
Benzodioxole was monochloromethylated directly by aqueous formaldehyde and hydrogen chloride gas in CCl4 in the presence of quaternary ammonium salts.
With hexadecyltrimethylammonium bromide at temperature 60~65 ℃ and for 15 hours of reaction, 1,3-benzodioxole was converted to piperonyl
chloride with conversion more than 98% and selectivity up to 97%. The method has advantages of high selectivity, high conversion, negligible
by-products and easy workup of the main product.
Attachment: Chloromethylation of 1,3-Benzodioxole in the Presence of Micellar Catalysts.pdf (237kB)
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turd
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| Quote: | | I don't understand this language |
Unfortunately neither do I. Have you tried online translation services?
Be sure to also check out bromomethylation. There are references using biphasic systems and also mono-phasic HBr/AcOH systems. I have made a few
experiments on para-dimethoxy-benzene and they gave me lots of bis-bromomethylarene product (definitely) and I think also lots of bis-aryl-methane
product (not unambiguously identified, but low nominal yield and high mp seems to indicate that). The best run so far was a biphasic system
without PTC.
Anyway, good luck - very interesting topic.
[Edited on 6-2-2014 by turd]
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GroovyDoo
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Yes, I tried online translation services - results is terrible
Feeling like an epigraphiest...
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