The present application relates to pyrrolonic compounds. In addition, it refers to processes and intermediates for preparing herbicidal compositions comprising these compounds and to methods for employing these compounds in order to control plant growth. Claim 1: A herbicidal compound of formula (1) wherein X is selected from S and O； Rᵃ is selected from hydrogen and halogen； Rᶜ is selected from hydrogen, formyl, hydroxyl, halogen, nitro, cyano, C₁₋₈ alkyl,C₁₋₆ cyanoalkyl,C₁₋₆ haloalkyl,C₁₋₆ hydroxyalkyl,C₂₋₆ alkenyloxy C₁₋₆ alkyl,1. C8332121 asphalt；C₁₋₆ alkoxy,alcoxi C alquilo CCilt alkyl C₁₋₆ alkyl,C₁₋₆ cyanoalkoxy,C₁₋₆ haloalkoxy,C₁₋₆alkoxy C₁₋₆ alkoxy,C₂₋₈ alkenyl,1. C 83228331 asphalt；C₂₋₆ cyanoalkenyl,C₂₋₆ cyanoalkynyl,C₂₋₆ alkenyloxy,1. Asphalt c832222；C₂₋₆ haloalkenyl,C₂₋₆ haloalkynyl,C₂₋₆ haloalkenyloxy,C₂₋₆ haloalkyloxy,C₁₋₆alkenyl C₂₋₆ alkoxy,C₁₋₆alkynyl C₂₋₆ alkoxy,alquil C sulfinilo alquil C sulfonilo haloalquiltio Chaloalkyl C₁₋₆sulfinyl, haloalkyl C₁₋₆sulfonyl, alkyl C₁₋₆sulfonyloxy, alkyl C₁₋₆carbonyl, haloalkyl C₁₋₆carbonyl, alkenyl C₂₋₆carbonyl, alkynyl C₂₋₆carbonyl, haloalkenyl C₂₋₆carbonyl, haloalkynyl C₂₋₆carbonyl, trialkylsilyl C₁₋₆alquinyl ₋₆,One r8309； r8310； N -,un grupo R C (O) N (R) -A R8309；]un grupo R R NSO -a R⁵R⁶NC (O) C₁₋₆ alkyl group,a C₆₋₁₀ aryloxy group optionally substituted with 1 to 3 groups independently selected from halogen, nitro, cyano, C₁₋₃ alkyl,C₁₋₃ alkoxy,C₁₋₃ haloalkyl and C₁₋₃ haloalkoxy,an aryl C₆₋₁₀-Cqu alkyl group optionally substituted with 1 to 13 groups independently selected from halogen, nitro, cyano, C₁₋₃ alkyl,C₁₋₃ alkoxy,C₁₋₃ haloalkyl and C₁₋₃ haloalkoxy,a C₆₋₁₀ benzyloxy group optionally substituted with 1 to 3 groups independently selected from halogen, nitro, cyano, C₁₋₃ alkyl,C₁₋₃ alkoxy,C₁₋₃ haloalkyl and C₁₋₃ haloalkoxy,a C₃₋₆ heterocyclic group optionally substituted with 1 to 3 groups independently selected from C₁₋₄ alkyl,a C₃₋₆ cycloalkyl group optionally substituted with 1 to 3 groups independe
