| 摘要 |
<p>Disclosed is a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith a yellow dye-forming coupler having formula <Bold>I</Bold>:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="45" wi="108" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" /></Chemistry> wherein
<UnorderedLists id="ula01" listStyle="none"><ListItem>each A is independently a divalent group selected from the divalent groups consisting of aryl and -C(R<Sup>1</Sup>)(R<Sup>2</Sup>)-, in which each R<Sup>1</Sup> and R<Sup>2</Sup> is independently selected from the group consisting of hydrogen, alkyl, alkoxy, aryloxy, heterocyclic, and aryl groups, and one A can be joined to form a ring with another A or with R<Sup>3</Sup>, and m is from 2 to 6;</ListItem><ListItem>R<Sup>3</Sup> is selected from the group consisting of hydrogen, alkyl, heterocyclic, and aryl groups, provided that R<Sup>3</Sup> may form a ring with A or is a group joined to R<Sup>4</Sup> to form a heterocyclic five- or six-membered ring;</ListItem><ListItem>R<Sup>4</Sup> is selected from the group consisting of aryl, heterocyclic, and alkyl groups and may form a heterocyclic ring bonded to R<Sup>3</Sup>;</ListItem><ListItem>Y is selected from the group consisting of-SO<Sub>2</Sub>-, -C(=O)-, -C(=O)NR<Sup>9</Sup>R<Sup>10</Sup>-, -C(=O)O-, and -P(=O)(OR<Sup>9</Sup>)(OR<Sup>10</Sup>-) where R<Sup>9</Sup> and R<Sup>10</Sup> are independently H or an alkyl or aryl group; and<!-- EPO <DP n="8001"> --></ListItem><ListItem>the remaining substituents are as described in the summary of the invention.</ListItem></UnorderedLists></p> |
