New 1-phenyl-2-heterocyclyl-2-hydroxy or halo ethane derivs. - useful as systemic or contact fungicides for plant protection

摘要

Heterocyclic cpds. of formula RR1CH-CR2R3-R4 (I) and their acid addn. salts are new: R = phenyl substd. by 1-3 halo and/or 1-2 1-3C alkyl and/or 1-2 1-3C alkoxy and/or 1 or 2 CF3, up to a max. of 3 substits.; R1 = 1-6C alkyl or alkylthio, 3-6C alkenyl, alkynyl, alkenylthio or alkynylthio (all opt. substd. by 1-4C alkoxy) or arylthio opt. substd. by 1-3 halo, and/or 1-2 1-3C alkyl and/or 1-2 1-3C alkoxy and/or 1 NO2, up to a max. of 3 substits; R2 = OH, Cl or Br; R3 2-6C alkenyl; aryl or aryl (1-3C) alkyl (opt. ring-substd. as in R1) or CRR5; R4 = 3-pyridyl (or its N-oxide), 2-pyrazinyl (or its 1- or 4-oxide or 1,4-dioxide) or 5-pyrimidinyl (or its 1-oxide or 1,3-dioxides); R5 = H, 1-10C alkyl (opt. substd. by 1 or 2 1-3C alkoxy or by one Cl or Br), vinyl, 1-6C alkoxy, Br, I or aryl (opt. substd. by 1-3 halo and/or 1-2 1-3C alkyl and/ or 1-2 1-3C alkoxy, up to a max. of 3 substits).