3,4-trans-4-ethyl-1-(substituted phenyl)-3- (substituted phenyl)

Details 3,4-trans-4-ethyl-1-(substituted phenyl)-3- (substituted phenyl) 3,4-trans-4-ethyl-1-(substituted phenyl)-3- (substituted phenyl)

1991-09-06

1992-06-23

Springer, David B.

Chemistry: fertilizers

Processes and products

Forms or conditioning

548543, C07D20734, A01N 4336

Patent

active

051239540

ABSTRACT:
A 3,4-cis isomer of 4-ethyl-1-(substituted phenyl)-3-substituted phenyl)pyrrolidin-2-one, when reacted with a base, can be effectively convered into a 3,4-trans isomer thereof which has a high herbicidal activity useful as an effective ingredient for a herbicidal composition. Furthermore, 3,4-trans-4-ethyl-1-(substituted phenyl)-3-(substituted phenyl)pyrrolidin-2-one compounds represented by the formula (III) ##STR1## (wherein R.sup.2 is an isopropyl group, and X is a fluorine atom, chlorine atom or bromine atom substituted at the 3-position, or fluorine atoms substituted at the 3- and 4-positions or the 3- and 5-positions) have an extremely excellent activity particularly as a herbicidally active ingredient of the herbicidal composition for rice paddy fields.

REFERENCES:
patent: 4069038 (1978-01-01), Teach
patent: 4960457 (1990-10-01), Wollard

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