摘要:
Derivatives of alkoxy, aryloxy and alkene isothiocyanates are produced by the reaction of a haloformate, an alkali, alkaline earth metal, lead or ammonium thiocyanate and a compound having the formula R.sup.1 YH wherein R.sup.1 is alkyl, aryl or alkoxy, Y is oxygen, sulfur or NR.sup.2 and R.sup.2 is hydrogen or R.sup.1, in the presence of a solvent or water and a catalyst.
摘要翻译:烷氧基,芳氧基和烯烃异硫氰酸酯的衍生物通过卤代甲酸酯,碱金属,碱土金属,硫氰酸铅或硫氰酸铵与具有式R1YH的化合物的反应产生,其中R 1是烷基,芳基或烷氧基,Y是氧,硫或 NR 2和R 2是氢或R 1,在溶剂或水和催化剂的存在下。
摘要:
There is disclosed a process for the preparation of thiocarbamates having the following general formula: ##STR1## wherein: R represents alkyl C.sub.1 -C.sub.4 optionally substituted with one or more halogen atoms, alkenyl C.sub.2 -C.sub.4 optionally substituted with one or more halogen atoms, phenyl optionally substituted with one or more halogen atoms, benzyl optionally substituted with one or more halogen atoms on the phenyl ring;R.sup.1 and R.sup.2, equal or different from one another, represent alkyl C.sub.1 -C.sub.4 or cycloalkyl;consisting in reacting organic dithiocarbonates with organic carbamoyl halides, in the presence of an aqueous solution of an inorganic base and a phase transfer catalyst, at a temperature of 10.degree. to 50.degree. C. for time periods of 5 to 10 hours.The thiocarbamates obtained are used as herbicides, fungicides, etc., and in general in various fields of "fine chemicals".
摘要:
Novel N-alkoxycarbonyl- and N-alkoxythiocarbonyl-amidines and a process for the preparation of alkoxycarbonyl- and alkoxythiocarbonyl- amidines by reacting an amidine with an ester of chlorocarbonic acid or chlorothiocarbonic acid in the presence of an inorganic acid acceptor and a 2-phase aqueous/organic solvent mixture at from 0.degree. to 60.degree.0 C.The novel end products which can be prepared by this process are useful starting materials for crop protection agents, and can be used in particular for the preparation of novel, selective herbicides.
摘要:
A process for the synthesis of thiocarbamic acid esters by reacting amine compounds having a general formula ##STR1## wherein A is an arylene radical, simple or substituted by halogens hydrocarbon radicals, alkoxy groups, or can be an alkylene radical having from 1 to 15 carbon atoms, straight-line or branched, simple or substituted, whereas X can be hydrogen --NH.sub.2 or can be an H.sub.2 --N--Z group in which the bivalent function Z derives from alkyl, aryl, cycloaryl, alkaryl, aralkyl radicals which can be, in their turn, simple or substituted, R and R' equal or different can be hydrogen or alkyl, aryl, alkaryl radicals and otherwise, with carbon monoxide, in the presence of a catalyst composed of a metallic selenide. The thiocarbamic acid esters are known compounds that find applications as medicaments for plants and as intermediates for organic synthesis.
摘要:
A process for the preparation of N-allyl-O-alkyl thionocarbamates is disclosed which comprises reacting in an aqueous solvent and in the presence of a phase transfer catalyst a thiocyanate salt, and an allyl halide to form an allyl isothiocyanate and then reacting said allyl isothiocyanate in the presence of certain catalysts with an alcohol.
摘要:
An improvement in the process for the preparation of N-allyl-O-alkyl thionocarbamates by the reaction of an allyl isothiocyanate with an alcohol is disclosed which comprises the use of a catalyst of the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are individually selected from alkyl or aryl or a mixture thereof, M represents a metal from Group III B, IV B, or V B of the Periodic Table of the Elements, and n is the integer 0 or 1; provided that the sum of n.sub.1, n.sub.2, n.sub.3, n.sub.4, and n.sub.5 equals the valance of said metal M.
摘要:
N-aryl(thiol)carbamates of the formula ##STR1## where X denotes hydrogen, fluorine, bromine, iodine, alkyl, alkoxy, haloalkyl, haloalkoxy, alkylthio, alkylsulfinyl or alkylsulfonyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, phenyl or benzyloxy, Y denotes hydrogen, halogen, alkyl, alkoxy, haloalkyl, haloalkoxy, alkylthio, alkylsulfinyl or alkylsulfonyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, phenyl or benzyloxy, n denotes one of the integers 1 and 2, Z denotes hydrogen, halogen or trifluoromethyl, A denotes oxygen, sulfur, sulfinyl or sulfonyl, and Q denotes oxygen or sulfur, and their use for combating unwanted plant growth.
摘要:
New m-anilide-urethanes, processes for their manufacture, herbicides containing these compounds, and processes for controlling unwanted plant growth with these compounds.
摘要:
Useful thionamide compounds are prepared by reacting sulfur with imines of the structural formula: ##STR1## where R is an alkyl group of 1 to 18 carbon atoms and is other than a phenyl or cyclohexyl group, R.sub.1 and R.sub.2 are alkyl or phenyl groups of 1 to 18 carbon atoms, and R.sub.3 is a phenyl group of 6 to 18 carbon atoms or is hydrogen, in the presence of a diol or triol compound. The total number of carbons in R, R.sub.1, R.sub.2, and R.sub.3 does not exceed 36 in number.