387353-77-7Relevant articles and documents
PROCESS FOR PREPARING ALISKIREN AND ITS INTERMEDIATES
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Page/Page column 34, (2012/03/09)
The present application relates to a process for the preparation of aliskiren and its pharmaceutically acceptable salts. In particular, the present application relates to a process for the preparation of intermediates for aliskiren, and their conversion to aliskiren or its salts.
METHOD FOR PRODUCING OPTICALLY ACTIVE (4E)-5-CHLORO-2-ISOPROPYL-4-PENTENOIC ACID OR BASIC AMINO ACID SALT THEREOF
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Page/Page column 7, (2008/12/08)
To provide a method for producing an optically active (4E)-5-chloro-2-isopropyl-4-pentenoic acid, a basic amino acid salt thereof or an optically active (4E)-5-chloro-2-isopropyl-4-pentenoic acid ester with high yield and high optical purity by simple operation. An optically active (4E)-5-chloro-2-isopropyl-4-pentenoic acid is obtained by precipitating a basic amino acid salt of optically active (4E)-5-chloro-2-isopropyl-4-pentenoic acid from a solvent solution containing an optical isomer mixture of (4E)-5-chloro-2-isopropyl-4-pentenoic acid and an optically active basic amino acid or a salt thereof, and then the basic amino acid salt of optically active (4E)-5-chloro-2-isopropyl-4-pentenoic acid is subjected to a desalting reaction. Further, an esterification reaction is carried out to obtain an optically active (4E)-5-chloro-2-isopropyl-4-pentenoic acid ester.
METHOD FOR PRODUCING (4E)-5-CHLORO-2-ISOPROPYL-4-PENTENOATE AND OPTICALLY ACTIVE SUBSTANCE THEREOF
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Page/Page column 12, (2010/11/27)
To provide a process for producing a (4E)-5-chloro-2-isopropyl-4-pentenoate in high yield and efficiently. A compound (2) is reacted with a base in the presence of an aprotic solvent and then with (1E)-1,3-dichloro-1-propene in the same reaction vessel to obtain a compound (3), and then either of -COOR moieties in the compound (3) is replaced with a hydrogen atom in the same reaction vessel to obtain a compound (4): wherein R is a lower alkyl group or an aralkyl group.