5-substituted-2,4-diphenylpyrimidine derivatives and their use

Details 5-substituted-2,4-diphenylpyrimidine derivatives and their use 5-substituted-2,4-diphenylpyrimidine derivatives and their use

1991-12-17

1993-03-02

Ford, John M.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

544298, 504178, A01N 4354, C07D23934

Patent

active

051905752

ABSTRACT:
A compound of the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, or a halogen atom, a (C.sub.1 to C.sub.3)-alkyl group, a halo-(C.sub.1 to C.sub.3)-alkyl group, a (C.sub.1 to C.sub.6)-alkoxy group, a (C.sub.2 to C.sub.6)-alkynyloxy group, a (C.sub.2 to C.sub.6)-alkenyloxy group, a halo-(C.sub.2 to C.sub.6)-alkynyloxy group, a halo-(C.sub.2 to C.sub.6)-alkenyloxy group, a (C.sub.1 to C.sub.2)-alkylthio group, a halo-(C.sub.1 to C.sub.6)-alkoxy group, a halo-(C.sub.1 to C.sub.2)-alkylthio group, a phenoxy group, a (C.sub.1 to C.sub.3)-alkylcarboxy group, a halo-(C.sub.1 to C.sub.3)-alkylcarboxy group, a (C.sub.1 to C.sub.2)-alkoxy-(C.sub.1 to C.sub.2)-alkoxy group, a halo-(C.sub.1 to C.sub.2)-alkoxy-halo-(C.sub.2 to C.sub.3)-alkoxy group, a (C.sub.1 to C.sub.3)-alkylsulfonyloxy group, a halo-(C.sub.1 to C.sub.3)-alkylsulfonyloxy group, a cyano group, a (C.sub.1 to C.sub.3)-alkoxycarbonyl group or an aminomethyl group, at the ortho or meta position; R.sup.2 and R.sup. 3, which may be either the same or different, each represents a hydrogen atom, a halogen atom, a (C.sub.1 to C.sub.2)-alkyl group, a halo-(C.sub.1 to C.sub.2)-alkyl group, a (C.sub.1 to C.sub.2)-alkoxy group, a nitro group, a (C.sub.1 to C.sub.2)-alkylthio group, a halo-(C.sub.1 to C.sub.2)-alkylthio group or a halo-(C.sub.1 to C.sub.2)-alkoxy group; and R.sup.4 represents a (C.sub.1 to C.sub.2)-alkyl group, provided that both R.sup.1 and R.sup.2 are not a hydrogen atom at the same time and that both of R.sup.2 and R.sup.3, if each representing a substituent other than a hydrogen atom, are not at the ortho position for the pyrimidine ring at the same time. The compound is used as herbicides.

REFERENCES:
patent: 5022915 (1991-06-01), Prisbylla
Takahashi et al., Journal of Heterocyclic Chemistry, vol. 23, pp. 77-80 (1986).
Bredereck et al., Chem. Ber. 97, 3397 (1964).
Zumach et al., Angew Chem. Internat. Edit., 9, 54 (1970).
Becker et al., J. Org. Chem. 28, 1986 (1963).
Truce et al., J. Am. Chem. Soc. 77, 5063 (1955).

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