摘要:
A description follows of 1,3-diones having general formula (I): together with their use as herbicides for the control of weeds in agricultural crops.
摘要:
Synergistic compositions are described, having a high herbicidal activity and containing the compound having formula (I): in a mixture with one or more known herbicidal products.
摘要:
There are described 1-phenoxy(phenylthio)-4-aryl-alkynyloxy-benzene derivatives endowed with a juvenile hormonic activity towards insects and with an acaricide activity. The use of these compounds for controlling insects infestations in both the agrarian and civil field and the processes for preparing said compounds are described too.
摘要:
There is disclosed a process for preparing polyhalogenated carbinols having formula: ##STR1## by reacting a compound having formula: ##STR2## with a system consisting of a compound having formula: ##STR3## and of a divalent metal or of a metal salt, in protic dipolar solvents, in which formulaeR=H, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkadienyl, phenyl, naphthyl, anthracyl group, a heterocyclic radical, optionally substituted;R'=H, a haloalkyl, --CN, --COOR" group with R" equal to H or to an alkyl group;X.sup.1 =Cl, Br; =X.sub.2 =F, Cl, Br;X.sup.3 =Cl, Br, CF.sub.3, CCl.sub.3 ; Y=Br or Cl when X.sup.1, X.sup.2 and X.sup.3 are different from Br.
摘要:
There are disclosed two hydroquinone diethers having at least one acetylenic and halogen-substituted chain and exhibiting juvenile hormone and acaricide activity and which show unexpected activity on Tenebrio molitor and Tribolium confusum.The two hydroquinone ethers are obtained by:(a) reacting one mole of hydroquinone alkali metal salt with two moles of 1,5-dichloropent-4-yne, or equimolar quantities of an alkali metal salt of 4-phenoxy-phenol with 1,5-dichlorpent-4-yne; or(b) by reacting the hydroquinone alkali metal salt or the 4-phenoxy-phenol alkali metal salt with the indicated quantities of 1,1,1,5-tetrachloropentane and then dehydrohalogenating the condensation product with alkali metal carbonates or hydroxides in dimethylsulphoxide.
摘要:
There are described compounds of formula: ##STR1## in which one of R and R.sup.1 is F or Cl and the other is H, F or Cl;X is a 1,4-phenylene or pyridyl bound in positions 2 and 5, optionally substituted;Y is a phenyl, 2- or 3-pyridyl, optionally substituted.The compounds of formula I are endowed with a high insecticide activity which is mainly directed against insect larvae and eggs.
摘要:
There is described a process for preparing the compound 1-decyloxy-4-[(7-oxa-4-octynyl)-oxy]-benzene consisting in condensing methyl-propargyl-ether with 1-bromo-3-chloro-propane and in reacting the resulting intermediate with 4-decyloxy-phenol in the presence of an alkaline hydroxide.The process can be carried out also without purifying the intermediate obtained from the first reaction.