Uracil compounds and a herbicide comprising the same

1. A uracil compound represented by Formula 1 or an agrochemically allowable salt thereof:

wherein

R 1 and R 2 , which may be the same or different, represent hydrogen or C 1 -C 6 alkyl;

R 3 represents hydrogen, hydroxyl, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 8 alkoxy, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 1 -C 6 alkoxy C 1 -C 6 alkyl or C 6 -C 10 aryl C 1 -C 6 alkoxy;

R 4 represents hydrogen, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl or C 1 -C 6 alkoxycarbonyl C 1 -C 6 alkyl;

R 5 represents hydrogen, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 2 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 haloalkenyl, C 2 -C 6 alkynyl, C 1 -C 6 alkoxycarbonyl C 1 -C 6 alkyl, C 6 -C 10 aryl C 1 -C 6 alkyl or C 6 -C 10 aryl C 1 -C 6 alkoxy;

X represents S, SO, or SO2;

Y represents C 1 -C 6 alkylene or C 1 -C 6 haloalkylene; W represents O, S, NH or N(C 1 -C 6 alkyl); and

Z represents halogen, cyano, CONH 2 or CSNH 2 .

2. The compound according to claim 1 , wherein R 1 and R 2 , which may be the same or different, represent hydrogen or methyl;

R 3 represents hydrogen, hydroxyl, methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, vinyl, allyl, methoxy, ethoxy, n-propoxy, n-butoxy, tert-butoxy, chloromethyl, dichloromethyl, fluoromethyl, difluoromethyl, trifluoromethyl or benzyloxy;

R 4 represents hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl or tert-butyl;

R 5 represents hydrogen, hydroxyl, methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, vinyl, allyl, propargyl, methoxy, ethoxy, n-propoxy, n-butoxy, tert-butoxy, benzyl, phenethyl, methoxycarbonylmethyl, methoxycarbonylethyl, methoxycarbonylpropyl, ethoxycarbonylmethyl, benzyloxy or phenethyloxy;

X represents S, or SO2;

Y represents CH 2 , CH(CH 3 ), CH 2 CH 2 , CH 2 CH 2 CH 2 , CH(CF 3 ), CH(CH 2 F), CH(CHF 2 ), CH 2 CHF or CH 2 CF 2 ;

W represents O, NH or N(CH 3 ); and

Z represents chlorine, cyano, CONH 2 or CSNH 2 .

3. The compound according to claim 1 , wherein R 1 and R 2 , which may be the same or different, represent hydrogen or methyl;

R 3 represents hydrogen, hydroxyl, methyl, methoxy or benzyloxy;

R 4 represents hydrogen or methyl;

R 5 represents hydrogen, methyl, ethyl, n-propyl, n-butyl, methoxy, allyl, propargyl, benzyl, benzyloxy or methoxycarbonylmethyl;

X represents S, or SO2;

Y represents CH 2 , CH(CH 3 ), CH 2 CH 2 , CH 2 CH 2 CH 2 or CH(CH 2 F);

W represents O or NH; and

Z represents chlorine, cyano or CSNH 2 .

4. The compound according to claim 1 , which is selected from:

3-[{2-[2-chloro-5-(3,6-dihydro-3-methyl-2,6-dioxo-4-trifluoromethyl-1(2H)-pyrimidinyl)-4-fluorophenylthio]-1-oxopropyl}amino]propionic acid methyl ester (Compound No. 36);

3-[{2-[2-chloro-5-(3,6-dihydro-3 -methyl-2,6-dioxo-4-trifluoromethyl-1(2H)-pyrimidinyl)-4-fluorophenylsulfonyl]-1-oxopropyl}amino]propionic acid methyl ester (Compound No. 61); and

an agrochemically allowable salt thereof.

5. A herbicide comprising a uracil compound represented by Formula 1, an agrochemically allowable salt thereof or a mixture thereof as an active ingredient:

wherein R 1 , R 2 , R 3 , R 4 , R 5 , X, Y, Z and W are the same as defined in claim 1 .

6. The herbicide according to claim 5 , further comprising an additive, wherein the uracil compound concentration is sufficient to remove grass weeds and broadleaf weeds by foliar application.

7. The herbicide according to claim 5 , further comprising an additive, wherein the uracil compound concentration is sufficient to remove grass weeds and broadleaf weeds without damage of crops upon soil treatment.

8. A herbicidal composition comprising:

0.1 wt % to 99.9 wt % of active ingredient selected from the group consisting of a uracil compound represented by Formula 1, an agrochemically allowable salt thereof or a mixture thereof; and

0.1 wt % to 99.9 wt % of an additive selected from a surfactant and a solid or liquid diluent:

wherein

R 1 , R 2 , R 3 , R 4 , R 5 , X, Y, Z and W are the same as defined in claim 1 .

9. The herbicidal composition according to claim 8 , which is formulated into a wettable powder, a suspension concentrate, an emulsifiable concentrate, an emulsion oil in water, a microemulsion, a soluble concentrate, a dispersible liquid, a water dispersible granule, a granule or a tablet.

10. The herbicidal composition according to claim 8 , wherein the active ingredient further comprises one or more selected from the group consisting of acetyl-CoA carboxylase inhibitor (ACC), acetolactate synthase, inhibitor (ALS), amide, auxin herbicide, auxin transport inhibitor, carotenoid biosynthesis inhibitor, enolpyruvylshikimate 3-phosphate synthase inhibitor (ESPS), glutamine synthetase inhibitor, lipid biosynthesis inhibitor, mitosis inhibitor, protoporphyrinogen IX oxidase inhibitor, photosynthesis inhibitor, synergist, growth substance, cell wall biosynthesis inhibitor and known herbicide.