| 摘要 |
1474704 Trifluoromethylcyclohexyl uracils BASF AG 11 Oct 1974 [13 Oct 1973] 44083/74 Heading C2C Trifluoromethylcyclohexyl uracils of the general formula wherein R 1 is halogen; R<SP>2</SP> is C 1-3 alkyl or R<SP>1</SP> and R<SP>2</SP> together denote -(CH 2 ) n - in which n is 3, 4 or 5 and R<SP>3</SP> is H or acyl of up to 8C atoms, are prepared by reacting a trifluoromethyl cyclohexyl urea with a #-keto ester of formula or by reacting a trifluoromethylcyclohexyl isocyanate with a #-amino-ester of formula to give, in either case, a compound of formula and cyclizing the product in the presence of a base the said product or corresponding halocompound in which H has been replaced by halogen as R<SP>1</SP>. Amongst the examples the compounds 3 - (3 - trifluoromethyl) cyclohexyl- 5-bromo-6-methyl uracil and the 5,6-trimethyl lene derivative are prepared. Herbicidal compositions comprise as active ingredient a uracil of Formula I together with a solid or liquid carrier and optionally with an emulsifying, wetting or dispersing agent, a fertilizer, fungicide, nematocide, insecticide, antidote and/or plant growth regulator. |
