Process for preparing 1,2,4-triazole derivatives
US4123437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Feb 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/6518
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,2,4-TRIAZOLE DERIVATIVES WHICH HAVE PARTICULAR IMPORTANCE AS INTERMEDIATES FOR, E.G., THE PREPARATION OF ACTIVE SUBSTANCES FOR PEST CONTROL, CORRESPONDING TO THE FORMULA ##STR1## wherein R.sup.1 represents an unsubstituted or substituted alkyl, alkenyl, or alkynyl, naphthyl, benzyl, phenylethyl, ##STR2## or phenylpropyl radical, or a mono or polycyclic cycloalkyl radical which can be bound by way of an alkylene bridge member, or a substituted phenyl radical, And new processes for the preparation of compounds of the formula ##STR3## wherein R represents hydrogen, an optionally substituted alkyl, alkenyl or alkynyl radical, an optionally substituted phenyl, naphthyl, benzyl, phenylethyl or phenylpropyl radical, a mono- or polycyclic cycloalkyl radical which can be bound by way of an alkylene bridge member and/or be substituted by alkyl, or a partially hydrogenated naphthyl radical, which processes are performed by addition to a hydrazine of the formula EQU R -- NH--NH.sub.2 or to a hydrazone of the formula ##STR4## wherein R has the above given meaning, R.sub.1 represents hydrogen or lower alkyl and R.sub.2 represents lower alkyl, of an alkoxy-carbonyl-isothiocyanate of the formula…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.