| abstract |
Thiolcarboxylic acid ester derivs. of formula (I) are new; X = O, S, oxymethylene, methyleneoxy, thiomethylene, methylenethio, ethylene, ethenylene or ethynylene; Y and Z = S or O, provided that they are not both O; R = 1-6C alkyl, mono- di- or tri-nuclear aryl or heteroaryl, these aryl and heteroaryl gps. opt. substd. by R1; R1 = halogen, CN, NO2, 1-6C alkyl, 3-6C cycloalkyl, 1-6C alkoxy, trifluoromethyl, mono or dinuclear aryloxy or mono, di or trinuclear aryl, these aryloxy and aryl gps. being themselves opt. susbtd. by R1. |