Method of producing a bis(2-carboxyethyl)alkyl phosphine oxide and a derivative thereof
US5679849A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1996 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Jan 17, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/5304
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of producing a bis(2-carboxyethyl)-alkyl phosphine oxide represented by the following general formula (1) is disclosed. ##STR1## The method comprises the following Steps 1-4: step 1 wherein phosphine is reacted with acrylonitrile to produce bis(2-cyanoethyl)phosphine and then, in step 2, reacted with an alkene to produce a bis(2-cyanoethyl)alkyl phosphine, and in step 3, reacted with an oxidizing agent to produce a bis(2-cyanoethyl)alkyl phosphine oxide, and in step 4, said bis(2-cyanoethyl)alkyl phosphine oxide is reacted with water or a lower alcohol to give a bis(2-carboxyethyl)alkyl phosphine oxide or a derivative thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.