Claims
- 1. An acaricidal compound of the formula ##STR3## in which: R.sub.A is hydrogen or a substituent at position 3' or 4' selected from lower alkoxy, fluoro, methoxymethoxy, 3'-methyl, 4'-methyl if X is bromo, methylcarbonyloxy, methylphenylsulfonyloxy, methylsulfonyloxy, methylsulfonyl, methylthio, or O,O-diethyl phosphonyloxy,
- R.sub.B is hydrogen or R.sub.A and R.sub.B together are --C.sub.4 H.sub.4 -- bridging positions 2'-3+ or 3'-4';
- R.sub.3 is hydrogen, methyl, or phenyl;
- R.sub.4 is hydrogen or methyl; and
- X is bromo or chloro.
- 2. An acaricidal compound of claim 1 in which:
- (a) R.sub.A is hydrogen or a substituent at position 3' or 4' selected from lower alkoxy, methoxymethoxy, 3'-methyl, methylthio, or methylsulfonyl;
- R.sub.B is hydrogen or R.sub.A and R.sub.B together are --C.sub.4 H.sub.4 -- bridging positions 2'-3' or 3'-4';
- R.sub.3 is hydrogen, methyl, or phenyl;
- R.sub.4 is hydrogen or methyl; and
- X is chloro; or
- (b) R.sub.A is hydrogen or a substituent at position 3' or 4' selected from lower alkoxy, fluoro, methoxymethoxy, methyl, methylcarbonyloxy, methylphenylsulfonyloxy, methylsulfonyloxy, methylthio, or O,O-diethyl phosphonyloxy;
- R.sub.B, R.sub.3, and R.sub.4 are as defined above; and
- X is bromo.
- 3. 2-(2,2-Dibromoethenyl)-4-methyl-5-phenylthiophene, a compound of claim 1.
- 4. 2-(2,2-Dibromoethenyl)-3,4-dimethyl-5-phenylthiophene, a compound of claim 1.
- 5. 2-(2,2-Dichloroethenyl)-5-(naphth-1-yl)thiophene, a compound of claim 1.
- 6. 2-(2,2-Dibromoethenyl)-5-phenylthiophene, a compound of claim 1.
- 7. 2-(2,2-Dibromoethenyl)-5-(4-fluorophenyl)thiophene, a compound of claim 1.
- 8. 2-(2,2-Dibromoethenyl)-5-(4-acetyloxyphenyl)thiophene, a compound of claim 1.
- 9. 2-(2,2-Dibromoethenyl)-5-(4-methylsulfonyloxyphenyl)thiophene, a compound of claim 1.
- 10. 2-(2,2-Dichloroethenyl)-5-phenylthiophene, a compound of claim 1.
- 11. 2-(2,2-Dichloroethenyl)-4-methyl-5-phenylthiophene, a compound of claim 1.
- 12. 2-(2,2-Dibromoethenyl)-5-(3-methylphenyl)thiophene, a compound of claim 1.
- 13. An acaricidal composition comprising an acaricidally effective amount of at least one compound of claim 1 in admixture with an agriculturally acceptable carrier.
- 14. A method for controlling acarids which comprises applying to the locus where control is desired an acaricidally effective amount of at least one compound of claim 1.
Parent Case Info
This application is a continuation of application Ser. No. 869,472 filed June 2, 1986 now abandoned.
Foreign Referenced Citations (2)
Number |
Date |
Country |
2810262 |
Sep 1978 |
DEX |
117922 |
Feb 1974 |
JPX |
Non-Patent Literature Citations (2)
Entry |
Chem Abst, James vol. 94 (1981), 94:174862p. |
E. Campaigne, J. Am. Chem. Soc., 66, 684 (1944). |
Continuations (1)
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Number |
Date |
Country |
Parent |
869472 |
Jun 1986 |
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