190717-38-5Relevant articles and documents
METHOD FOR PURIFYING 4-HALO CYCLOHEXANE-1-CARBOXYLIC ACID, AND METHODS FOR PRODUCING PRODUCTS CONTAINING 4- HALO CYCLOHEXANE-1-CARBOXYLIC ACID
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Paragraph 0037-0038, (2020/03/31)
To provide a method for purifying a 4-halo cyclohexane-1-carboxylic acid which can be highly purified without performing column purification, and a method for producing a product containing the 4-halo cyclohexane-1-carboxylic acid.SOLUTION: There is provided a method for purifying a 4-halo cyclohexane-1-carboxylic acid comprising a crystallization step of subjecting a mixture including a 4-halo cyclohexane-1-carboxylic acid and a 3-halo cyclohexane-1-carboxylic acid to a crystallization operation in a mixed solvent of water and a water-soluble organic solvent or a hydrocarbon solvent to increase a content of the 4-halo cyclohexane-1-carboxylic acid.SELECTED DRAWING: None
Imidazole n-benzyldioxol derivatives, method for preparing same, resulting intermediates, pharmaceutical compositions and use of said derivatives as endothelin antagonists
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, (2008/06/13)
PCT No. PCT/FR96/01749 Sec. 371 Date Jun. 9, 1998 Sec. 102(e) Date Jun. 9, 1998 PCT Filed Nov. 7, 1996 PCT Pub. No. WO97/17339 PCT Pub. Date May 15, 1997The invention relates to the new products of formula (I): in which: R1 represents alkyl, optionally su