| 摘要 |
<p>There are described compounds of the formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="24" wi="77" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>in which R<Sup>5</Sup> is methyl or halomethyl,
<UnorderedLists id="ula01" listStyle="none"><ListItem>R<Sup>2</Sup> is -CN, -CONRyRz, -COOR<Sup>6</Sup> or -<Sub>COS</Sub>R<Sup>6</Sup>,</ListItem><ListItem>R<Sup>1</Sup> and R<Sup>6</Sup> each represent hydrogen, a cation or an optionally substituted alkyl, alkenyl, alkynyl or aryl,</ListItem><ListItem>Ry and Rz each represent hydrogen, alkyl or aryl,</ListItem><ListItem>A represents hydrogen, or A and one of -XR<Sup>3</Sup> and -ZR<Sup>4</Sup> together form a double bond, and the other of -XR<Sup>3</Sup> and -ZR<Sup>4</Sup> represents -OR<Sup>10</Sup> or -NHR<Sup>11</Sup> in which R<Sup>10</Sup> is alkyl or acyl and R<Sup>11</Sup> is alkyl, aryl or acyl,</ListItem><ListItem>X and Z (when not forming part of a double bond with A), which may be the same or different, each represent oxygen, sulphur or a group -NR<Sup>7</Sup>-,</ListItem><ListItem>R<Sup>7</Sup> represents hydrogen or alkyl,</ListItem><ListItem>R<Sup>3</Sup> and R<Sup>4</Sup> each represent alkyl or R<Sup>3</Sup> and R<Sup>4</Sup> together form an optionally substituted alkylene or arylene chain</ListItem><ListItem>or -XR<Sup>3</Sup> and <Sup>-ZR4</Sup> together form <Sup>=C</Sup>(<Sup>CN</Sup>)<Sup>2</Sup> or <Sup>=NR8</Sup>, in which R<Sup>8</Sup> represents alkoxy, benzyloxy, hydroxy, phenyl, -NHCONH<Sub>2</Sub>, -NHCSNH<Sub>2</Sub> or -NH phenyl,</ListItem><ListItem>or one of -XR<Sup>3</Sup> and -ZR<Sup>4</Sup> is -OH (or an ester or ether thereof) and the other is hydrogen, -CN or -SO<Sub>3</Sub><Sup>⊖</Sup>cation,</ListItem><ListItem>or -XR<Sup>3</Sup> and -ZR<Sup>4</Sup> together form carbonyl oxygen.</ListItem><ListItem>There are also described methods for making the compounds and herbicidal compositions containing them.</ListItem></UnorderedLists></p> |
