| abstract |
Substd. benzyl cyclopropane carboxylate esters of formula (I) are new: Where X = CH or N; A = a gp. (i)-(iv) R1 = CN, 2-8C alkyl, CF3, 3-8C alkenyl, Me3Si, 1-4C alkoxycarbonyl, phenyl (1-6C) alkyl or phenyl (3-6C) alkenyl (in which the aromatic rings can be substd. by 1-5 halo or 1-3 of 1-6C alkyl (opt. partially or fully halogenated) or 1-6C alkoxy); or R1 is phenyl substd. by EtO; 2- or 3- Br; 2- or 4- CF3; 2,4- or 2,6-F2; 2-F-6-Cl; 2,4- or 2,6-Me2, or 2,3,6-Cl3; R2 = H or halo; R3 = phenyl (opt. substd. by 1-5 halo or 1-3 of 1-6C alkyl (opt. partially or fully halogenated) or 1-6C alkoxy); R4 = Me or halogen; Proviso: X = CH if R1 = CF3 or Me3Si. More specifically A = A' with R1 = CN, 2-4C alkyl, CF3, 3-4C alkenyl, Me3Si, 1-2C alkoxycarbonyl, phenyl (1-4C) alkyl or phenyl (3-4C) alkenyl (opt. ring substd. by halo or Me); or phenyl substd. by 2-Br; 2,4- or 2,6-F2; 2-F-6-Cl or 2,3,6-Cl3. |