- Direct formation of 2,3,5-trichloropyridine and its nucleophilic displacement reactions in ionic liquid
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Reaction of trichloroacetaldehyde and acrylonitrile in the presence of a catalytic amount of copper (I) chloride in ionic liquid afforded 2,3,5-trichloropyridine, fluprination of which with KF and CsF in ionic liquid afforded 3,5-dichloro-2-fluoropyridihe and 5-chloro-2,3-dichloropyridine. Reaction of 2,3,5-trichloropyridine, 3,5-dichloro-2-fluoropyridine, or 5-chloro-2,3-dichloropyride with 2-(4-hydroxyphenoxy) propionates in ionic liquid afforded the corresponding 2-aryloxylpropionates in good yields.
- Zhong, Ping,Hu, Huanan,Guo, Shengrong
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p. 4301 - 4311
(2007/10/03)
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- 2-(heteroaryloxyphenoxy)alkylsulfonates useful as herbicidal agents
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2-(Heteroaryloxyphenoxy)alkylsulfonate compounds which are effective for the selective control of grass weed species in the presence of crops are described. Also described are a method for the selective herbicidal use of the compounds and a method for the
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- Herbicidal esters of D-1-(phenoxy-4-phenoxy)propionic acid
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Optically active enantiomers of the formula I STR1 where R is a group of the formulae STR2 R1 and R2, among others, are halogen or CF3 and Z is a carboxyl, carboxylate, carboxylic acid ester, thioester, carbonamide, carboxylic acid anilide, carbohydrazide or thioamide group, are interesting herbicides the effect of which is considerably superior to that of the optically inactive racemates.
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