| abstract |
New substd. phenyl trifluoromethyl ethers are of formula R1-(A1-Z1)n-A2-Z2-A3-OCF3 (I); R1 = H or 1-18C alkyl, in which CH2 gp(s) may be replaced by -E-, -O-, -S- and/or -CO- and/or CF2 gp(s) may be replaced by -CH2-, -E-, -O-, -S- and/or -CO- but 2 hetero-atoms are not linked directly; .E = CH=CX, CX=CH, (II), CHY, (III) or (IV), X = Y, CH3 or H; Y = CN, NCS, NCO or halogen; A1 and A2 independnetly = 1,4-phenylene, opt. with one or more halogen, CN and/or CH3 substit(s), in which CH gp(s) may be replaced by N; 1,4-cyclohexylene, in which one or 2 non-adjacent CH2 gps. may be replaced by -O- and/or -S-; 1,4-cyclohexenylene; 1,4-bicyclo(2,2,2)octylene; or piperidin-1,4-diyl; Z1 and Z2 independently = -CO-O-, -O-CO-, -CH2O-, -OCH2-, -CH2CH2-, -CH=CH- or a single bond; A3 = 1,4-phenylene, opt. with one or more halogen, CN and/or CH3 substit(s); n = 0, 1 or 2; if n = 1 or 2, R1 = alkoxy, A1 = A2 = A3 = unsubstd. 1,4-phenylene and Z2 = -CH2O-, -OCH2-, -CH2CH2-, -CH=CH- or a single bond. (I) can be prepd. (not claimed) by standard methods, e.g. as described in Houben-Weyl, Methoden der Organischen Chemie, Georg-Thieme-Verlag, Stuttgart, vol. IA, p. 867 ff. |