Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1999-04-30
2000-02-15
Geist, Gary
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562564, C07C 5116, C07C22922, C07C22930
Patent
active
060255226
ABSTRACT:
Process for making secondary amphoacetate and amphodiacetate of the formula ##STR1## wherein R.sup.1 is C.sub.8 -C.sub.18 -alkyl or C.sub.8 -C.sub.18 -alkenyl, R.sup.2 is hydrogen or a group of the formula --CH.sub.2 COOM and M is alkaline or alkaline earth metal, which comprises heating a compound of the formula 2 ##STR2## at pH between 7-14, at a temperature of 80 to 90 deg C. and for at least 24 hours and subsequent reaction with an aqueous solution of chloroacetic acid or is alkali salt at a pH from 7 fo 14 and a temperature of 80 to 90.degree. C. Due to the long period for the ring opening in the first step predominantly secondary products are obtained which are advantageous in that they show a low viscosity of their aqueous solution.
REFERENCES:
Database CAPLUS on STN, Acc. No. 1992:407492, Sotodani et al., `Preparation fo amindoamine compounds with low discoloration.` JP 04026663 A2 (abstract), 1992.
Cox Graham
Henning Torsten
Clariant Finance (BVI) Ltd.
Davis Brian J.
Dearth Miles B.
Geist Gary
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