3-amino-2-mercaptobenzoic acid derivatives and processes for their preparation
US6380422B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Feb 26, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C319/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula I and disulfides thereof and salts thereof are important intermediate products for the preparation of compounds having a microbicidal and plant-immunizing action, of the formula III In the compounds of the formulae I and III:X is halogen,n is 0, 1, 2 or 3;Z is CN, CO—A or CS—A,A is hydrogen, halogen, OR1, SR2 and N(R3)R4;R1 to R4 are hydrogen, a substituted or unsubstituted, open-chain, saturated or unsaturated hydrocarbon radical containing not more than 8 carbon atoms, a substituted or unsubstituted cyclic, saturated or unsaturated hydrocarbon radical containing not more than 10 carbon atoms, substituted or unsubstituted benzyl or phenethyl, a substituted or unsubstituted alkanoyl group containing not more than 8 carbon atoms, a substituted or unsubstituted benzoyl group or a substituted or unsubstituted heterocyclyl radical; orR3 and R4, together with the nitrogen atom to which they are bonded, are a 5- or 6-membered, substituted or unsubstituted heterocyclic radical having 1-3 heteroatoms O, S and/or N.Processes for the preparation of compounds of the formula I are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.