Heterocyclic phenyl ethers and their herbicidal use

Claim 1

A 4-phenoxyalkanecarboxylic acid compound of the formula ##STR18## wherein R is halogen, CF 3 , NO 2 , CN, (C 1 -C 4 )-alkayl, or (C 1 -C 4 )-alkoxy, and n is 0 to 3; X is S or O; Y is O, S, SO, SO 2 , NH, or N-(C 1 -C 4 )-alkyl; R 1 is H or (C 1 -C 4 )-alkyl; and ##STR19## wherein R 2 is H, (C 1 -C 12 )-alkyl, (C 1 -C 12 )-alkyl substituted by at least one member selected from the group consisting of up to 6 halogen atoms, OH, CN, SCN, (C 1 -C 6 )-alkoxy, (C 1 -C 4 )-alkylthio, (C 1 -C 4 )-alkylsulfinyl, (C 1 -C 4 )-alkylsulfonyl, (C 1 -C 6 )-alkoxy-(C 2 -C 6 )-alkoxy, halogeno-(C 1 -C 2 )-alkoxy, methoxyethoxyethoxy, (C 1 -C 4 )-alkylamino, di-(C 1 -C 4 )-alkylamino, phenyl, phenoxy, phenyl or phenoxy mono- or disubstituted by halogen, (C 1 -C 4 )-alkyl, COOR 3 , or --CO--R 3 , (C 5 -C 6 )-cycloalkyl, (C 5 -C 6 )-cycloalkyl substituted by halogen or methyl, (C 3 -C 6 )-alkenyl, halogeno-(C 3 -C 6 )-alkenyl, (C 5 -C 6 )-cycloalkenyl, (C 3 -C 4 )-alkinyl, (C 3 -C 4 )-alkinyl mono- or di-substituted by (C 1 -C 6 )-alkyl, phenyl, halogen, (C 1 -C 2 )-alkoxy, phenyl, phenyl mono-, di-, or tri-substituted by (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, halogen, NO 2 or CF 3 , a cation equivalent of organic or inorganic base, or --N=C(R 1 )(R 4 ); R 3 is H, (C 1 -C 4 )-alkyl, phenyl-(C 1 -C 2 )-alkyl, phenyl-(C 1 -C 2 )-alkyl mono- or di-substituted by at least one member selected from the group consisting of (C 1 -C 4 )-alkyl and halogen, (C 3 -C 6 )-alkenyl, phenyl, phenyl mono- or di-substituted by at least one member selected from the group consisting of (C 1 -C 4 )-alkyl and halogen; R 4 and R 5 , taken alone, are the same or different and are H, (C 1 -C 6 )-alkyl, hydroxy-(C 1 -C 6 )-alkyl, (C 5 -C 6 )-cycloalkyl, phenyl, or phenyl mono- di-, or tri-substituted by (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, halogen, or CF 3 , but R 4 and R 5 are not both phenyl or substituted phenyl, and if R 4 is H or (C 1 -C 4 )-alkyl, the R 5 may be (C 1 -C 4 )-alkoxycarbonyl-(C 1 -C 4 )-alkyl; R 6 is H or CH 3 ; R 7 is H, CH 3 or C 2 H 5 ; R 8 is H, CH 3 , C 2 H 5 , or phenyl; R 9 is (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkyl mono-, di- or trisubstituted by halogen, cyclopropyl, (C 3 -C 6 )-alkenyl, phenyl, or phenyl mono-substituted by (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, halogen, CF 3 , or nitro; and R 10 is (C 1 -C 4 )-alkyl, phenyl, or phenyl mono- or di-substituted by halogen, CF 3 , NO 2 , or (C 1 -C 4 )-alkyl.