Methoxymethyl p-toluenesulfonate
US4219495A · kind A · utility
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1Claims
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Key dates
| Filing date | Feb 28, 1979 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Feb 28, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A new esterifying agent, i.e. methoxymethyl tosylate, is provided for use in preparing methoxymethyl esters of organic carboxylic acids. The new esterifying agent is found to be particularly advantageous in the esterification of penicillin 3-carboxyl groups or cephalosporin 4-carboxyl groups to the methoxymethyl ester group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.