| 摘要 |
<p>Pollen suppressants of the formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="36" wi="53" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein Z represents a divalent organic radical of the formula -CH=CH-CH=CH-, -CH=CH-CH=N-, -CH=CH-N=CH-, -CH=CH-NH-, -CH=CH-O-, or -CH =CH-S or said radical in which an H of Z is replaced with a halogen atom with the proviso that no more than three H of Z are replaced by fluorine: a C<Sub>l</Sub>-C<Sub>4</Sub> alkyl, C<Sub>1</Sub>-C<Sub>4</Sub> alkoxy, C<Sub>1</Sub>-C<Sub>4</Sub> alkanoyl, cyano, nitro, hydroxy, or trihalomethyl group; or a group of the formula -NH<Sup>1</Sup>R<Sup>2</Sup> wherein R<Sup>1</Sup> and R<Sup>2</Sup> independently represent a hydrogen atom or a C<Sub>1</Sub>-C<Sub>4</Sub> alkyl group; Y is Y<Sup>1</Sup>R<Sup>3</Sup> or NR<Sup>4</Sup> R<Sup>5</Sup> wherein Y<Sup>1</Sup> is oxygen or sulfur; R<Sup>3</Sup> is hydrogen, C<Sub>1</Sub>-C<Sub>4</Sub> alkyl, C<Sub>1</Sub>-C<Sub>4</Sub> alkoxyalkyl, cyclohexylmethyl, halogenated C<Sub>t</Sub>-C<Sub>4</Sub> alkyl, phenyl, or benzyl; and R<Sup>4</Sup> and R<Sup>5</Sup> are independently selected from the group consisting of hydrogen, C<Sub>1</Sub>-C<Sub>4</Sub> alkyl, or C<Sub>1</Sub>-C<Sub>4</Sub> alkyl substituted with carboxyl or C<Sub>1</Sub>-C<Sub>4</Sub> alkoxycarbonyl, and R represents C<Sub>1</Sub>-C<Sub>4</Sub> alkyl, phenyl, naphthyl, or phenyl or naphthyl substituted with one to three substituents selected from the group consisting of halogen, trihalomethyl, C<Sub>1</Sub>-C<Sub>4</Sub> alkoxy, C<Sub>1</Sub>-C<Sub>4</Sub> alkyl, and cyano, are disclosed along with methods of producing these compounds and of using them to produce hybrid seeds in self-fertilizing plants.</p> |
