Claims
- 1. A method of defoliating plants comprising applying to the plants a defoliating amount of a compound having the formula: ##STR10## wherein n=0, 1 or 2
- R.sup.1 =hydrogen, C.sub.1 -C.sub.4 linear or branched alkyl, or benzyl with the provisos that:
- if n=0, 1 or 2,
- R=phenyl or naphthyl
- phenyl substituted with 1 or 2 members selected from the group consisting of:
- 3- or 4-halo
- 3,5-dichloro
- 2-(C.sub.1 -C.sub.4 alkyl)
- 4-(C.sub.3 -C.sub.4 alkyl)
- 2,5-dimethyl
- phenyl
- 3-methoxy
- 4-(C.sub.2 -C.sub.5 alkoxy)
- C.sub.2 -C.sub.5 alkylcarbonyl
- 3- or 4-carboxy, alkali metal salt
- 3- or 4-methoxycarbonyl
- C.sub.2 -C.sub.5 alkylaminocarbonyl
- phenylaminocarbonyl
- 3-cyano
- amino and
- 3-nitro;
- 3- or 4-pyridinyl; or
- furanyl;
- if n=0 or 1,
- R=phenyl substituted with:
- 2-halo
- 2,4-dihalo
- 2,5-dimethyl
- 4-CF.sub.3
- 3-pentyloxy
- 3-(C.sub.2 -C.sub.3 alkoxycarbonyl) or
- morpholinocarbonyl; or
- thienyl;
- if n=1 or 2,
- R=phenyl substituted with:
- 3-CF.sub.3
- 4-methoxy
- 4-nitro
- 4-nitrotolyl or
- 3,4-dichloro;
- if n=0,
- R=phenyl substituted with:
- 2-halo
- 3-methyl
- 3,5-dimethyl or
- phenoxy;
- furanyl substituted with methyl and ethoxy, or carbonyl;
- if n=1,
- R=phenyl substituted with:
- 2.
- 2. 6-dichloro
- 4-CH.sub.3 or
- 4-ethoxycarbonyl;
- if n=0 or 2,
- R=phenyl substituted with tolylaminocarbonyl. 2. A method as in claim 1 in which R.sup.1 is hydrogen or C.sub.1 -C.sub.4 linear or branched alkyl with the provisos that:
- if n=0, 1 or 2,
- R=phenyl substituted with:
- 3-halo
- 3,5-dichloro
- 3-methoxy
- 4-carboxy alkali metal salt
- 3-amino
- 3-nitro
- 3-cyano;
- 3- or 4-pyridinyl;
- if n=0 or 1,
- R=phenyl substituted with:
- 2-halo
- 4-(Br or Cl)
- 2,4-dichloro
- 2,5-dimethyl
- 2-thienyl
- if n=1 or 2,
- R=phenyl substituted with:
- 3-CF
- 3-CH.sub.3 -4-NO.sub.2
- 4-nitro
- 4-methoxy;
- if n=0,
- R=phenyl subsituted with:
- phenoxy;
- if n=1,
- R=phenyl substituted with:
- C.sub.2 -C.sub.4 alkoxy
- 4-(C.sub.1 -C.sub.4 n-alkyl)
- 4-methylcarbonyl
- 3-(C.sub.2 C.sub.3 alkoxycarbonyl) P3 4-methoxycarbonyl.
- 3. A method as in claim 1 in which the said compound is the comound of claim 1 wherein R.sup.1 is hydrogen or methyl, n is 0, 1 or 2 and R is phenyl substituted with 3-Cl, 3-Br, 3-F, 2,5-dimethyl, 3-trifluoromethyl, 3-nitro or 3-cyano.
- 4. A method as in claim 1 in which the said compound is the compound of claim 10 wherein n is 1, R.sup.1 is hydrogen and R is 3-fluorophenyl.
- 5. A process in accordance with claim 1 wherein R is 3-halophenyl.
- 6. A process in accordance with claim 5 wherein R is 3-chlorophenyl.
- 7. A process in accordance with claim 5 wherein R.sup.1 is hydrogen; n is 0; and R is 3-chlorophenyl.
- 8. A process in accordance with claim 5 wherein R.sup.1 is hydrogn; n is 1; and R is 3-chlorophenyl.
- 9. A process in accordance with claim 5 wherein R.sup.1 is 6-methyl; n is 1; and R is 2-fluorophenyl.
Parent Case Info
This is a division of U.S. patent application Ser. No. 531,362 filed Sept. 12, 1983, now U.S. Pat. No. 4,569,690, which is a continuation-in-part of U.S. patent application Ser. No. 425,739 filed Sept. 28, 1982 and now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
2845339 |
Bluestone |
Jul 1958 |
|
3920438 |
Brewer et al. |
Nov 1975 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
071317 |
Feb 1984 |
JPX |
Non-Patent Literature Citations (2)
Entry |
S. Hoff et al, Tetrahedron Letters, No. 52, pp. 5267-5268, (1972). |
Bauer et al, J. Org. Chem., vol. 30, pp. 949-951, (1965). |
Divisions (1)
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Number |
Date |
Country |
Parent |
531362 |
Sep 1983 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
425739 |
Sep 1982 |
|