Preparation of salt-free N-acyl taurines
US4233229A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1978 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Jan 3, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C309/15
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a substantially salt free N-acyl taurine by reacting 1 mole of a higher molecular weight carboxylic acid chloride with 1 mole of a taurine salt containing at least 1 N-bonded H atom in a lower alkanol initially containing no more than about 15% by weight of water and about 1 mole of an alkali metal hydroxide at elevated temperatures, preferably at reflux, separating the insoluble precipitated alkali metal chloride from the alkanolic reaction medium at a temperature high enough to solubilize the N-acyl taurine reaction product, and cooling the reaction medium low enough to precipitate the desired N-acyl taurine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.