Claim 1, a process for the manufacture of benzoxazinonas characterised by the formula (1) where r u00b9 is H, alkyl or Halogen c u2081 u208b u2086; R u00b2 is H, alkyl or Halogen c u2081 u208b u2086; r u00b3 is H, alkyl or Halogen c u2081 u208b u2086; r u2074 is H, alkyl c u2081 u208b u2086, haloalquilo c u2081 u208b u2086, cicloa Lquilo c u2083 u208b u2086, alquenilo c u2083 u208b u2086, haloalquenilo c u2083 u208b u2086, alquinilo c u2083 u208b u2086, haloalquinilo c u2083 u208b u2086,C u2081 u208b u2086 cicloalquil c u2083 u208b u2086 alkoxy or alkyl c u2081 u208b u2086; r u2075 is H or alkyl c u2081 u208b u2086; r u2076 is H or alkyl c u2081 u208b u2086 is o or s; W and Z is o or s; carbamates; where the formula (2), where r u2075 and r u2076 as defined in formula (1); and r u2077 c u2081 u208b u2086 is alkyl, haloalquilo C u2081 u208b u2086, cianoalquilo c u2081 u208b u2086, nitroalquilo c u2081 u208b u2086, aryl,Aryl or heteroaryl 5 or 6 members c u2081 u208b u2086 where alkyl; aryl or heteroaryl Ring are not replaced, partially or fully Halogenated or substituted with 1 to 5 substituents selected from the group consisting no u2082 NS, c u2081 u208b u2086 haloalquilo c u2081 u208b u2086, alkyl, alkoxy, o, C u2081 u208b u2086, haloalcoxi c u2081 u208b u2086, Formilo, alquilcarbonilo c u2081 u208b u2086,Hidroxicarbonilo and alcoxicarbonilo c u2081 u208b u2086; are reacted with non - benzoxazinonas of formula (3), where r u00b9, R u00b2, r u00b3, r u2074 and W are as defined in the formula (1); and r u2078 is haloalquilo c u2081 u208b u2086, cianoalquilo c u2081 u208b u2086, nitroalquilo c u2081 u208b u2086, aryl, heteroaryl 5 or 6 members c u2081 u208b u2086 alkyl or aryl, aryl or heteroaryl where rings are not replaced, partially or fully halogenatedOr substituted with 1 to 5 substituents selected from the group consisting no u2082 NS, c u2081 u208b u2086 haloalquilo c u2081 u208b u2086, alkyl, alkoxy, Oh, c u2081 u208b u2086, haloalcoxi c u2081 u208b u2086,