16987-02-3Relevant academic research and scientific papers
Processes for producing phenoxy propionic acid derivatives
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, (2008/06/13)
PCT No. PCT/JP97/01711 Sec. 371 Date Dec. 3, 1998 Sec. 102(e) Date Dec. 3, 1998 PCT Filed May 21, 1997 PCT Pub. No. WO97/46538 PCT Pub. Date Dec. 11, 1997The present invention relates to processes for producing D(+)-2-[4-(6-chloro-2-quinoxalyloxy)phenoxy]propionic acid and ester derivatives thereof and which can be used as selective herbicides for foliage treatment for controlling gramineous weeds against broad leaf crop plants.
Process for the preparation and purification of D-hydroxyphenoxypropionic acid
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, (2008/06/13)
A process for the preparation of D-hydroxyphenoxypropionic acid and its purification from its reaction mixture containing the acid, together with inorganic salts and various organic impurities, by crystallization of D-hydroxyphenoxypropionic acid by cooling followed by washing the crystals of D-hydroxyphenoxypropionic acid by elution.
Process for preparing optically active 2-(4-hydroxy-phenoxy) propionic acid compounds
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, (2008/06/13)
A process for preparing an optically active 2-(4-hydroxyphenoxy)propionic acid compound, which comprises reacting an optically active compound having the formula: STR1 wherein X is a chlorine atom or a bromine atom, and M is a hydrogen atom or an alkali metal atom, with hydroquinone or an alkali metal salt of hydroquinone, in the presence of an alkali metal hydroxide and water, and precipitating optically active disodium 2-(4-hydroxyphenoxy)propionate.
Process for the preparation of dextrorotatory 2-phenoxypropionic acid derivatives
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, (2008/06/13)
Dextrorotatory 2-phenoxypropionic acids are made by heating an alkali metal salt of dextrorotatory 2-chloropropionic acid with an alkali metal phenate in an inert organic solvent of high boiling point under reflux.
