Both n- and s-butyl lithium were prepared by slow addition of the appropriate halide to the freshly prepared dispersion of lithium in n-hexane (for n-butyl lithium) or cyclohexane (for s-butyl lithium) under sonication. Petroleum ether has boiling point 60–80 8C. Silica gel (60–120 ...
effluent is mixed with an alkali metal sulphate such as a sodium compound under conditions for the formation of the corresponding alkali metal bisulphate, the bisulphate is dried or crystallized and then reacted with an alkali metal halide such as chloride to form the corresponding hydrogen halide....
Example 3 A printing color of the following constitution is prepared: Grams The product of the action of benzoylchloride 45 sulfonic acid on the condensation product from 1 mol of cyanuric chloride, 2 mols of 2-aminoanthraquinone and 1 mol of aniline--- 60 3:5:5-trimethylhydantoin__--- 7...
creates an intermediate that undergoes rearrangement to release acyl halide, hydrogen halide acid, and phosphine oxide. Further tautomerization of the acyl halide occurs, which forms α-halo acyl halide. Finally, hydrolysis takes place, which leads to the formation of α-halo carboxylic acid[2-4]...
Solutions of water-insoluble copolymers are prepared by polymerizing in an aqueous solution containing at least 10% by weight of a water-soluble halide or thiocyanate salt of a metal of Group I or II of the Periodic Table, in the presence of a water-soluble, free-radical initiator and at ...
halide and as shell portion a copolymer of methyl acrylate, ethyl acrylate, ethyl methacrylate ethyl hexyl acrylate, n-butyl (meth)acrylate and/or itacaconic acid and vinylidene halide; and B being present in form of an aqueous alkaline solution and consists of a (co)polymer of unsaturated ...
They are prepared by reacting 2-fluoromethyl-4-methyl - 6 - hydroxypyrimidine with a halide (R1)(R2O)P(X)Hal, preferably in the presence of an acid binding agent or using the phenol in the form of a salt. An inert organic solvent may be used and temperatures of 30-90 DEG C. are...
They may be made by treatment of the appropriate hydroxy monocarboxylic ester with sodium and treatment of the sodium compound with a halide of the desired aryl or aralkyl radical. Alternatively, they may be made by treating the halogenated ester such as ethyl a - or b -chlorpropionate with ...
esterifies in several manners to form esters which are themselves hypnotics and sedatives, and it may be carried through a synthesis whereby it is converted into a higher homologous neopentyl halide which itself constitutes a valuable intermediate for the prep- aration of hypnotics and the like ...
The dyes are added to an aqueous gelatine solution mixed with a gelatine containing silver halide and cast on to a substrate to give a layer. The dyes may also be used in multilayer material which contains a layer dyed with a cyan dyestuff which is selectively sensitive to red, a layer ...