Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1995-12-22
1996-10-22
Morris, Patricia L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D24912
Patent
active
055678254
ABSTRACT:
The improvement proposed in the invention consists in the use of, as a reaction solvent in the reaction of a 1,3,5-trialkyl-2-halogenobenzene and an alkali metal salt of 3-mercapto-1H-1,2,4-triazole in the presence of a copper catalyst for the preparation of a 3-(2,4,6-trialkylphenylthio)-1H-1,2,4-triazole useful as an intermediate in the preparation of herbicide compounds, a compound represented by the general formula ##STR1## in which R is a lower alkyl group, Y is a methylene group or an N-(lower alkyl)imino group and Z is a divalent hydrocarbon group to form a 5-membered ring or 6-membered ring together with the group --N--CO--Y--, such as N-methyl-2-pyrrolidone, N,N'-dimethyl-2-imidazolidinone and N,N'-dimethyl propylene urea, so as to obtain the product in a high yield without the danger of explosion.
REFERENCES:
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Chemical Abstracts, vol. 121, No. 7, p. 1175, abstract No. 205358m(abstract of JP-A-06 080 651) (1994).
Chemical Abstracts, vol. 111, No. 25, p. 789, abstract No. 232788b (abstract of JP-A-01 121 279) (1989).
Methoden der Organischen Chemie, (Houben-Weyl), Band E11, Organische Schwefel-Verbindungen, Georg Thiem Verlag (Stuttgart), p. 174 (1985).
M. Fieser, Fieser and Fieser's Reagents for Organic Synthesis, vol. 11, Wiley-Interscience (New York), pp. 202-203 (1974).
Ohi Hideo
Ozawa Noriyuki
Chugai Seiyaku Kabushiki Kaisha
Ihara Chemical Industry Co. Ltd.
Morris Patricia L.
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