The invention relates to new 1-(2-oxyaminosulphonylphenylsulphonyl)-3-heteroaryl-ureas of the general formula (I) ##STR1## in which R.sup.1 represents an optionally substituted radical from the series comprising alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkylalkyl, aralkyl and aryl, R.sup.2 represents hydrogen or an optionally substituted radical from the series comprising alkyl, alkenyl, alkinyl and aralkyl and R.sup.3 represents an optionally substituted and/or optionally fused six-membered aromatic heterocyclic radical containing at least one nitrogen atom, the following compounds being excluded: 1-(2-methoxyaminosulphonylphenylsulphonyl)-, 1-(2-ethoxyaminosulphonylphenylsulphonyl)-, 1-(2-propoxy-aminosulphonylphenylsulphonyl)-, 1-(2-isopropoxyaminosulphonylphenylsulphonyl)- and 1-(2-butoxyaminosulphonylphenylsulphonyl)-3-(4,6-dimethyl-pyrimidin-2-yl)- urea, -3-(4,6-diethyl-pyrimidin-2-yl)-urea, -3-(4,6-dipropylpyrimidin-2-yl)-urea, -3-(4,6-diisopropyl-pyrimidin-2-yl)-urea and -3-(4,6-dibutyl-pyrimidin-2-yl)-urea, processes for their preparation and their use as herbicides.
Herbicidally active 1-(2-oxyaminosulphenylphenylsulphonyl)-3-triazinyl-ureas of the formula ##STR1## in which X is nitrogen, Y is nitrogn, Z is C-R.sup.6 and R.sup.1, R.sup.2, R.sup.4 and R.sup.6 are various organic radicals.
Rhodium(<scp>iii</scp>)-catalyzed directed amidation of unactivated C(sp<sup>3</sup>)–H bonds to afford 1,2-amino alcohol derivatives
作者:Yi Dong、Jiajing Chen、Heng Xu
DOI:10.1039/c8cc05637d
日期:——
A rhodium-catalyzed directed C(sp3)–H amidation to afford 1,2-amino alcohol oxime derivatives has been developed with good yields and a broad substrate scope. In previous methods for this type of reaction, 1-arylethan-1-ol oxime analogues were challenging substrates owing to strong competition fromC(sp2)–H bondactivation. This Rh-catalyzed C–H activation method overcomes the limitation of competitive
Herbicidally active novel 1-(2-oxyaminosulphonylphenylsulphonyl)-3-heteroaryl-iso (thio)-ureas of the formula ##STR1## in which R is optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl-alkyl, cycloalkyl, aralkyl, aryl or heteryl, R.sup.1 is optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkyl-alkyl, aralkyl or aryl, R.sup.2 is hydrogen, or optionally substituted alkyl, alkenyl, alkinyl or aralkyl, R.sup.3 is an optionally substituted and/or optionally fused 6-membered aromatic heterocycle which contains at least one nitrogen atom, and Q is oxygen or sulphur, or strong acid-adducts thereof.
Novel herbicidally active fluoroalkoxyphenylsulphonylguanidines of the formula ##STR1## in which M is hydrogen or one equivalent of a metal, R.sup.1 is fluorine-substituted alkyl, and R.sup.2, R.sup.3 and R.sup.4 each independently is hydrogen or various organic radicals, or 1:1 adducts thereof with strong acids.