首页>
外国专利>
SEPARATION AND RECOVERY OF ALPHA OMEGA-DIHYDROXY-DELTA, (OMEGA-3)-ALKANEDIONE, OMEGA-HYDROXY-(OMEGA3)-KETOFATTY ACID AND ITS SALT, DICARBOXYLIC ACID AND ITS SALT
SEPARATION AND RECOVERY OF ALPHA OMEGA-DIHYDROXY-DELTA, (OMEGA-3)-ALKANEDIONE, OMEGA-HYDROXY-(OMEGA3)-KETOFATTY ACID AND ITS SALT, DICARBOXYLIC ACID AND ITS SALT
PROBLEM TO BE SOLVED: To separate and recover the subject compounds useful as an important intermediate of a perfume by selectively crystallizing out an alkali metal salt of ω-hydroxy-(ω-3)-ketofatty acid from a mixture containing an alkali metal salt of a long chain dicarboxylic acid, and then performing a solid-liquid separation. ;SOLUTION: This alkali metal salt of ω-hydroxy-(ω-3)-ketofatty acid of formula I [(k) is 9-13 integer; M is an alkali metal], useful as an important intermediate of a large cyclic lactone-based perfume, is separated and recovered by selectively crystallizing the compound of formula I from a mixture containing the compound of formula I and an alkali metal salt of a long chain dicarboxylic acid of formula II [(m) is 9-13 integer], and then performing a solid liquid separation to a cake and a filtrate liquid.;COPYRIGHT: (C)1999,JPO
展开▼
