Intermediate compounds. 1. Claim 1: the process of preparing formula (1) compound, wherein R1 is h, tar c833318327；C₃₋₈ alkoxycarbonylalkyl,C83324c83318327a hydraulic oil；C₃₋₇ alkenyl,1. C 83238331 asphalt；C₃₋₇ cycloalkyl,C₄₋₇ cycloalkylalkyl,C₂₋₃ cyanoalkyl,C₁₋₄ nitroalkyl,C₁₋₇ haloalkyl,C₃₋₇ haloalkenyl,C₂₋₇ alkoxyalkyl or C₃₋₇ alkylthioalkyl；R² is C₁₋₇ alkyl,1. Lease No. c8332-318328a；C₃₋₈ alkoxycarbonylalkyl,C83324c83318327a hydraulic oil；C₃₋₇ alkenyl,1. C 83238331 asphalt；C₃₋₇ cycloalkyl,C₄₋₇ cycloalkylalkyl,C₂₋₃ cyanoalkyl,C₁₋₄ nitroalkyl,a. Halogenated ALCOXY c833228d3183277a,C₁₋₇ haloalkyl,C₃₋₇ haloalkenyl,C₂₋₇ alkoxyalkyl or C₂₋₃ alkoxycarbonyl；or phenyl optionally substituted by halogen, C₁₋₄ alkyl or C₁₋₄ haloalkyl；X is O, o x is C (r8310a) = C (r8311a) -,Among them, the carbon atom combines with r8310,In addition, it is also connected with carbon atom to r830808；And carbon atoms to r831181,In addition, the phenyl ring entity (1) in the formula is added；each R³ is independently halogen, -CN, nitro, C₁₋₅ alkyl,C₂₋₅ alkenyl,C₂₋₅ alkynyl,C₃₋₅ cycloalkyl,C₄₋₅ cycloalkylalkyl,C₁₋₅ haloalkyl,C₃₋₅ haloalkenyl,C₃₋₅ haloalkynyl,C₂₋₅ alkoxyalkyl,C₁₋₅ alkoxy,C₁₋₅ haloalkoxy,Asphalt no.c8332121C₁₋₅ haloalkylthio or C₂₋₅ alkoxycarbonyl；N is 0, 1, 2 or 3； r830808；R⁶ and R⁷ are independently H, halogen, nitro, -CN, C₁₋₅ alkyl,C₂₋₅ alkenyl,C₂₋₅ alkynyl,C₃₋₅ cycloalkyl,C₄₋₅ cycloalkylalkyl,C₁₋₅ haloalkyl,C₃₋₅ haloalkenyl,C₃₋₅ haloalkynyl,C₂₋₅ alkoxyalkyl,C₁₋₅ alkoxy,C₁₋₅ haloalkoxy,Asphalt no.c8332121C83218c83318248a asphalt；C₁₋₄ alkylsulfonyl,C₁₋₅ haloalkylthio or C₂₋₅ alkoxycarbonyl；Including hydrogenation of a herbicide intermediate compound prepared (2), wherein R1,R2,R3,n, R⁴,10. Formula (1) is defined above for r8310 and r8311；and Pyr is a pyridine ring optionally substituted with halogen or C₁₋₄ alkyl.Compuestos intermediarios. Reivindicación 1: Un proceso para preparar un compuesto de la fórmula (1) en donde R¹ es H, alquilo C₁₋₇, alcoxicarbonilalquilo C₃₋₈, alqui
