摘要:
A process for the preparation of a hydroxybenzaldoxime O-ether of the formula ##STR1## in which R.sup.1 represents alkyl, comprising(a) in a first step, hydrogenating a nitro-benzaldoxime O-ether of the formula ##STR2## using the calculated amount of hydrogen in the presence of a catalyst and in the presence of a diluent, and(b) in a second step, reacting the amino-benzaldoxime O-ether of the formula ##STR3## thus obtained with a diazotizing agent in acidic, aqueous solution, and, without isolation, thermally hydrolyzing the resultant diazonium salt of the formula ##STR4## in which X.crclbar. represents an equivalent of an inorganic anion, in acidic, aqueous solution.
摘要:
A process for the preparation of a hydroxybenzaldoxime O-ether of the formula ##STR1## in which R.sup.1 is alkyl, alkenyl or alkinyl, comprising reacting an aminobenzaldoxime O-ether of the formula ##STR2## in which R.sup.1 has the abovementioned meaning, with a diazotizing agent in acidic, aqueous solution, and thermally hydrolyzing the resulting diazonium salt of the formula ##STR3## in which X.crclbar. in an equivalent of an inorganic anion andR.sup.1 has the abovementioned meaning,in acidic, aqueous solution without intermediate isolation.The products are intermediates for agricultural and pharmaceutical chemicals.Novel amino-benzaldoxime O-ethers of the formula ##STR4## wherein R.sup.1 has the above-mentioned meaning.
摘要:
New benzothiophenecarboxamide S-oxides of the formula (I) ##STR1## in which R.sup.1 represents optionally substituted alkyl, or represents alkenyl or alkinyl, or represents in each case optionally substituted cycloalkyl or cycloalkylalkyl, or represents in each case optionally substituted aralkyl, aralkenyl, aralkinyl or aryl and R.sup.2 represents hydrogen or optionally substituted alkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are bonded represent an optionally substituted heterocycle, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently of one another in each case represent hydrogen, halogen, cyano, nitro, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy or halogenoalkylthio, and R.sup.1 represents hydrogen or halogen, a process for their preparation, and their use as microbicides in plant protection and in the protection of materials. New intermediates for the preparation of substances of the formula (I).
摘要:
A process for the preparation of a methyl ketone of the formula ##STR1## in which R.sup.1 is alkyl, alkenyl, alkinyl, optionally substituted aryl or optionally substituted heteroaryl,R.sup.2 is alkyl,R.sup.3 is alkyl orR.sup.2 and R.sup.3, together with the carbon atom to which they are bonded, from a cycloalkyl ring,comprising reacting a methyl sec.-alkyl ketone of the formula ##STR2## with a halide of the formulaR.sup.1 --CH.sub.2 --Xin whichX is halogen,in the presence of a base, a diluent, and a phase-transfer catalyst.
摘要:
Hydroxybenzaldoxime O-ethers of the formula ##STR1## in which R.sup.1 represents alkyl,are obtained by a process in which a tert.-butoxy-benzaldoxime of the formula ##STR2## is reacted with alkylating agents of the formulaR.sup.1 --Xin whichR.sup.1 has the abovementioned meaning andX represents halogen or OSO.sub.2 OR.sup.1,whereinR.sup.1 again has the abovementioned meaning,in the presence of a strong base and phase transfer catalyst and in the presence of a diluent at temperatures between 0.degree. C. and 50.degree. C., and the products are then treated with anhydrous acid at temperatures between 0.degree. C. and 50.degree. C.,Hydroxybenzaldoxime O-ethers can be used as intermediate products for the synthesis of compounds with a fungicidal, insecticidal and antimycotic activity. The tert.-butoxy-benzalodoxime starting material is a new compound.
摘要:
A process for the preparation of a hydroxybenzaldoxime O-ether of the formula ##STR1## in which R.sup.1 is alkyl, alkenyl or alkinyl,comprising reacting an aminobenzaldoxime O-ether of the formula ##STR2## in which R.sup.1 has the abovementioned meaning,with a diazotizing agent in acidic, aqueous solution, and thermally hydrolyzing the resulting diazonium salt of the formula ##STR3## in which X.crclbar. in an equivalent of an inorganic anion andR.sup.1 has the abovementioned meaning,in acidic, aqueous solution without intermediate isolation.The products are intermediates for agricultural and pharmaceutical chemicals.Novel amino-benzaldoxime O-ethers of the formula ##STR4## wherein R.sup.1 has the above-mentioned meaning.
摘要:
The invention relates to a plurality of processes for the preparation of novel cis-alkoxy-substituted spirocyclic 1 H-pyrrolidine-2,4-dione derivatives of the formula (I) in which A, G, X and Y are as defined in the disclosure.
摘要:
The invention relates to a novel method for producing phthalic acid dichloride (benzene-1,2-dicarbonylchloride) from phthalic anhydride by reaction with phosgene in the presence of N,N-dialkylformamides.
摘要:
The present invention relates to a plurality of novel processes and novel intermediates for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines, which are known as intermediates for preparing compounds having fungicidal properties (WO 95-04728).
摘要:
The present invention relates to a plurality of novel processes and novel intermediates for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines, which are known as intermediates for preparing compounds having fungicidal properties (WO 95-04728).