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Fungicides
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Inventors: Clough, John M.; Godfrey, Christopher R. A.; de Fraine, Paul J.; Hutchings, Michael G.; Ferguson, Ian;
Assignee: Imperial Chemical Industries PLC (London, GB2)
Primary Examiner: Gray; Bruce
Assistant Examiner:
Attorney, Agent or Firm: Cushman, Darby & Cushman
Fungicidal compounds having the formula: ##STR1## and stereoisomers thereof, wherein R.sup.1 is optionally substituted C.sub.2-10 alkenyl, optionally substituted C.sub.5-6 cycloalkenyl, optionally substituted C.sub.2-10 alkynyl, or C.sub.1-10 alkyl substituted with --CN, --NC, --COR.sup.2, --CO.sub.2 R.sup.2, --NO.sub.2 or --SCN; X is O, S(O)n or NR.sup.2 and is attached to the 3- or the 4-position of the phenyl ring; Y and Z, which may be the same or different, are H, halogen, --CH.sub.3, --C.sub.2 H.sub.5, or --OCH.sub.3 ; R.sup.2 is H, C.sub.1-4 alkyl, C.sub.1-4 alkenyl, or, when R.sup.2 is C.sub.1-4 alkyl in the group --COR.sup.2, it joins with the alkyl group to which --COR.sup.2 is attached to form a 5- or 6-membered aliphatic ring; and n is 0, 1 or 2. |
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DETAILED DESCRIPTION What we claim is : 1.
Fungicidal compounds of the formula (I) : ##STR8## and stereoisomers thereof, wherein R.
sup.
1 is optionally substituted C.
sub.
2-10 alkenyl, optionally substituted C.
sub.
5-6 cycloalkenyl, optionally substituted C.
sub.
2-10 alkynyl, or C.
sub.
1-10 alkyl substituted with --CN, --NC, --COR.
sup.
2, --CO.
sub.
2 R.
sup.
2, --NO.
sub.
2 or --SCN; X is O, S(O)n or NR.
sup.
2 and is attached to the 3- or the 4-position of the phenyl ring; Y and Z, which may be the same or different, are H, halogen, --CH.
sub.
3, --C.
sub.
2 H.
sub.
5, or --OCH.
sub.
3 ; R.
sup.
2 is H, C.
sub.
1-4 alkyl, C.
sub.
1-4 alkenyl, or, when R.
sup.
2 is C.
sub.
1-4 alkyl in the group --COR.
sup.
2, it joins with the alkyl group to which --COR.
sup.
2 is attached to form a 5- or 6-membered aliphatic ring; and n is 0, 1 or 2.
2.
A compound according to claim 1 wherein R.
sup.
1 is C.
sub.
2-10 alkenyl or C.
sub.
2-10 alkynyl, X is O and Y and Z are H, halogen, --CH.
sub.
3, --C.
sub.
2 H.
sub.
5 or --OCH.
sub.
3.
3.
A compound according to claim 2 wherein R.
sup.
1 is alkynyl and Y and Z are H.
4.
A compound according to claim 3 wherein R.
sup.
1 is --CH.
sub.
2 CH.
tbd.
CH 5.
A compound according to claim 4 wherein X is attached to the 4- position.
6.
A fungicidal composition comprising a fungicidally effective amount of a compound according to claim 1 and a fungicidally acceptable carrier or diluent therefor.
7.
A method of combating fungi which comprises applying to plants, to the seeds of plants or to the locus of the plants or seeds, an effective amount of a compound according to claim 1.
Description:
This invention relates to derivatives of propenoic acid useful as fungicides, to processes for preparing them, to fungicidal compositions containing them, and to methods of using them to combat fungi, especially fungal infections in plants.
According to the present invention there is provided a compound having the formula (I) : ##STR2## and stereoisomers thereof, wherein R.
sup.
1 is optionally substituted C.
sub.
2-10 alkenyl, optionally substituted C
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Drugs 
