| 摘要 |
<p>New 2,6-dinitro-4-trifluoromethylaniline derivs. are of formula (I): In the formula Q is NHCN, N3, SCN, SACN or SCH2COOMe; A is 1-4C alkylene, R1 is H, 1-5C non-tert. alkyl, 3-4C alkenyl, 2-3C chloroalkyl, 3-4C chloroalkenyl or cyclopropylmethyl, R2 is 1-7C non-tert. alkyl, 3-4C alkenyl, phenyl, 2-3C chloroalkyl, 3-4C chloroalkenyl, chlorophenyl, cyclopropylmethyl, 3-4C alkynyl, tetrahydrofuryl-1-3C-alkyl, N-methyl-2-propionamide (sic) or N(R3)2, with the proviso that R2 can only be N(R3)2 when R1 H; R3 is 1-3C alkyl). The triethylamine, pyridine and alkali metal salts of (I) when Q = NHCN are also claimed. Cpds. (I) are useful as (a) fungicides, e.g. for control of mildew (Plasmopara) on grape vines, and (b) as herbicides. In an example, the triethylamine salt of 3-cyanoamino-2,6-dinitro-N-(3-pentyl)-4-trifluoromethylaniline is prepd. by reacting 3-chloro-2,6-dinitro-N-(3-pentyl)-4-trifluoromethylaniline with cyanamide in the presence of triethylamine.</p> |
