Butyltrichlorosilane (CAS NO.7521-80-4) is a colorless liquid with a pungent odor. It is corrosive to metals and skin. It reacts with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride and flammable butane. Can serve as a chlorination agent. React...
Side products of the reaction are ethylene and hydrogen, yields of which increase with increasing temperature and rising degree of substitution of chlorine by bromine. A mechanism is discussed in which the initiation step is the generation of halobutyl radicals of the type H 2 膴 (CH 2 ) 2 ...
The ester of the formula (I) is obtained by reacting an alcohol or its halide of the formula (II), ##STR5## wherein R1, X and Y are as defined above and A is a hydroxyl group or a halogen atom such as chlorine or bromine, with approximately equimolar amounts of a carboxylic acid...
(I) are obtained by a process which comprises reacting 5-aminopyrazoles of the formula (II) ##STR3## in which R1, R2 and R3 have the abovementioned meanings with compounds of the formula (III) ##STR4## in which Hal represents fluorine, chlorine, bromine or iodine, preferably fluorine...
R1 is benzyl, phenyl, thiophene or imidazolyl optionally substituted with C1-4alkyl or halogen, such as methyl, fluorine or bromine; R2 is hydrogen or C1-4alkyl such as methyl; R3 is phenyl; R4 is hydrogen; R5 is hydrogen or C1-6alkylcarbonyl such as methylcarbonyl; X is —SO2...
(I) wherein L is a radical of formula (h) wherein Z is Z1, Y is NH and X is O or S, said X being represented by X1 and said compounds by the formula (I-b-1), can generally be prepared by reacting an isocyanate or isothiocyanate of formula (V) with a reagent of formula (...
and converting the resulting compounds where appropriate into their addition salts with physiologically tolerated acids. Suitable and preferred nucleofugic leaving groups for Nu are halogen atoms, in particular bromine or chlorine. The reaction is expediently carried out in the presence of an inert ...
The N-substituted benzamides are active as insecticides and nematicides and can be prepared by reacting a benzoyl halide of the formula (II) ##STR2## in which R8, R9, R10, R11and R12are identical or different and represent hydrogen, halogen, nitro, alkyl, halogenoalkyl, halogenoalkoxy or...
and furthermore lower alkyl-thio, for example CH3 S-- or C2 H5 S--, or HCO--NH--, di-(lower alkyl)-amino, for example dimethylamino or diethylamino, lower alkyl-O--CO--, for example CH3 O--CO-- and C2 H5 O--CO--, halogen, preferably fluorine, chlorine or bromine, --C.tbd...
The alcohol (7) is converted into the corresponding bromide (8) using bromine and triphenylphosphine. The bromide (8) is used to alkylate the anion of the Schiff's base (8A) derived from the methyl ester of ala