Process for the preparation of phenolic thiocarboxylic acid esters
US5110978A · kind A · utility
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10Claims
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Key dates
| Filing date | Dec 21, 1990 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Dec 21, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C323/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of compounds of formula I ##STR1## by reacting a phenol with formaldehyde and a thiol of formula HS--C.sub.n H.sub.2n --COO--R.sub.3 under excess pressure and in the presence of dimethylamine. The symbols R.sub.1 and R.sub.2 are independently alkyl, R.sub.3 is alkyl or alkyl interrupted by --O-- or --S--, and n is 1 or 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.