cas 2655-14-3, 3,5-Xylyl methylcarbamate | Articles data

Articles about 2655-14-3Total 7 be found

An easy and efficient one-step procedure for the preparation of alkyl and aryl alkylcarbamates from S-methyl N-alkylthiocarbamates
A general, one-step procedure for the synthesis of alkyl and aryl alkylcarbamates, by the direct reaction of S-methyl N-alkylthiocarbamates with alcohols or phenols in toluene at reflux in the presence of triethylamine, is reported. All the target products were obtained in high yield (15 examples, average yield 94%) and very high purity (>99.2%). The recovery of a co-product of industrial interest, methanethiol, in an amount of one mole for each mole of thiocarbamate, with complete exploitation of the reagent, should also be noted. Georg Thieme Verlag Stuttgart.
Degani, Iacopo,Fochi, Rita,Magistris, Claudio
experimental part
p. 2919 - 2924
(2009/04/06)

One-pot, three-step preparation of alkyl and aryl alkylcarbamates from S-methyl N-alkylthiocarbamates
A general procedure for the synthesis of alkyl and aryl alkylcarbamates starting from the corresponding 5-methyl N-alkylthiocarbamates is described. This procedure consists of three steps that are carried out in a one-pot fashion, without isolating the intermediate N-alkylcarbamoyl chlorides or alkyl isocyanates. All the target products were obtained in high yields (16 examples, average yield 91%). To be noted is the recovery of a co-product of industrial interest, dimethyl disulfide, in a half mole amount for each mole of thiocarbamate, with complete exploitation of the reagent. The alkyl isocyanates, if required, can also be isolated in high yields. Georg Thieme Verlag Stuttgart.
Artuso, Emma,Degani, Iacopo,Fochi, Rita,Magistris, Claudio
experimental part
p. 1612 - 1618
(2009/04/03)

Fluid insecticidal formulations for treatment of parasitic insect larvae by dermal application
The present invention relates to the use of polysiloxanes containing at least one quaternary ammonium group as formulation auxiliary in formulations of larvicidal and/or ovicidal active compounds and to compositions containing a) a larvicidal and/or ovicidal active compound and b) a polysiloxane derivative with at least one quaternary ammonium group per molecule, and, if appropriate, further auxiliaries and carriers.
-
(2008/06/13)

Process for preparing herbicidal ureas and insecticidal carbamates and carbamate derivatives
The present invention provides a process for preparing herbicidal ureas and insecticidal carbamates and carbamate derivatives comprising reacting an amine, alcohol, or oxime nucleophile with a urea in an inert organic solvent.
-
(2008/06/13)

Pyrazole oxime derivatives and compositions
A pyrazole oxime derivative represented by the general formula (I) which is useful as an insecticide and fungicide, STR1 wherein the structural elements are defined in the specification, and the method of controlling said pests. The compounds represented by the general formula (I) can be synthesized by the methods disclosed in the specification.
-
(2008/06/13)

Process for preparing ureas
The present invention provides a novel process for preparing herbicidal and insecticidal ureas, carbamates and carbamate derivatives of the formula E is -O- or -C(R4)2- ;, R is C1-C7 alkyl;, R1 is H, C1-C7 alkyl, C3-C7 cycloalkyl, phenyl, or C1-C4 alkylphenyl;, R2 is H, C1-C7 alkyl, C3-C7 cycloalkyl, C2-C7 alkenyl, C2-C7 alkynyl, or phenyl optionally substituted with Cl, Br, -NO2, -CF3, C1-C4 alkyl, C1-C4 alkoxy, or -N(C1-C4 alkyl)2;, R3 is H, F, Cl, Br, -CF3, C1-C7 alkyl option-ally substituted with F, Cl, or Br, -S(O)nC1-C7 alkyl, C1-C7 alkoxy, C3-C7 cycloalkyl optionally substituted with F, Cl, or Br, or phenyl optionally substituted with F, Cl, Br, -NO2, -CF3, or C1-C4 alkyl;, R4 is H or C1-C4 alkyl;, R5 is C1-C7 alkoxy or -S(O)nC1-C7 alkyl;, R6 is C1-C5 alkyl optionally substituted with F, Cl, or Br, C3-C5 cycloalkyl, phenyl, or, , - X is R3, -N=CH-N(C1-C4 alkyl)2, -N(C1-C4 alkyl)2 or -N(C2-C4 alkenyl)2, Y is H or S(O)nC1-C7 alkyl;, Z is H, C1-C4 alkyl, Cl, F, Br, haloalkyl, -NO2, -N(C1-C4 alkyl)2, -C≡N, phenyl, -S(C1-C4 alkyl), or C1-C4 alkoxy;, n is 0, 1, or 2; and, m is 1, 2 or 3,comprising reacting a nucleophile of the formula A-H, wherein A is as defined above, with a urea of the formula wherein each R is independently chosen from R as set forth above and each R1 is independently chosen from R1 as set forth above.
-
(2008/06/13)

Process for the production of N-methylcarbamates
Process for the production of N-methylcarbamates: STR1 (wherein RO- is the radical of a substituted phenol or of a naphthol), wherein: in a first reaction step methylamine and diphenyl carbonate are reacted with each other, operating in the liquid phase and as a continuous process, in order to form phenol and phenyl-N-methylurethane; in a second reaction step phenyl-N-methylurethane, within the related reaction mixture outcoming from the first step, is thermally continuously decomposed, to yield a gaseous stream containing methyl isocyanate, from which the components different than methyl isocyanate are condensed off; in a third step the methyl isocyanate stream, outcoming from the second step, after an optional preliminary condensation, is continuously fed and contacted with a solution of a substituted phenol or of a naphthol in an inert organic solvent, containing a basic catalyst, to form N-methylcarbamate (I); N-methylcarbamate (I) is finally recovered from the reaction mixture outcoming from the third step.
-
(2008/06/13)