Übersetzung für "Evaporieren" in Englisch

Pour a few ml of the solution onto a glass plate and allow the solvent to evaporate.

Evaporation of the filtrate and recrystallization from ethyl acetate gives a further 1.20 g of pure product.

By evaporation, the ring closure is completed to give, after recrystallization from tert.

Is it possible to evaporate ether with the Concentrator plus?

The plants have the vital necessity to evaporate the present water in soil.

After evaporation of the solution to constant weight 86.2 g (84.9% theory) of a dark brown resin are obtained.

After cooling, filtering and evaporating the filtrate the oily crude product is taken up in 100 ml n-pentane, insoluble potassium iodide filtered off, the filtrate evaporated and dried at 45° C. and 20 mbar.

By the addition of 0.1 ml 32% hydrochloric acid and the evaporation of the organic phase, the ring closure is completed to give, after recrystallization from diethyl ether, 10.66 g (41.9 mmole) threo-5-(2-chlorophenylhydroxymethyl)-4-methoxy-2(5H)-furanone.

The tert-butyl methyl ether is evaporated off, and the residue is then admixed with 2 equivalents by volume of hexane, after which the phthalan dissolves and the 3-isochromanone crystallizes out of the solution.

In order to evaporate the dichloromethane as rapidly as possible the surface of the suspension was gassed with nitrogen while stirring.

Hot air is again conveyed over the coated surfaces in order to evaporate (remove by a current of air) solvent contained in the coating, the solvent is removed by suction and the printed circuit boards are dried.

After evaporating the solvent in vacuo, the crude product is purified by flash chromatography on 50 g of silica gel (32-63 ?m, dichloromethane/petroleum ether/ethanol 20:5:1 containing 0.7% of triethylamine).

The fractions with an Rf of 0.48 give, after evaporation and recrystallisation from toluene, 2.64 g.

By the addition of 0.1 ml. 32% hydrochloric acid and evaporation of the organic phase, the ring closure is completed to give, after recrystallisation from diethyl ether, 10.66 g. (41.9 mmole) threo-5-(2 -chlorophenylhydroxymethyl)-4-methoxy-2(5H)-furanone.

Stripping off the solvent in vacuo and evaporating the residue in the presence of benzene gave a crude product which, when purified by medium pressure chromatography over silica gel using a chloroform/methanol gradient, gives 670 mg (92% yield) of the pure compound.

Stripping off the solvent in vacuo and evaporation in the presence of benzene gives the crude product, which is purified by medium pressure chromatography over silica gel using a chloroform/methanol gradient, 110 mg of pure substance (82% yield) being eluted at a chloroform/methanol ratio of 6:4 (v/v).

Compound 15 is converted quantitatively into the acetic acid salt of the final product, from which the final product is obtained pure by evaporation with triethylamine several times.

Further non-volatile organic substances can be polyhydric alcohols like glycerine or monosaccharides like glucose and also disaccharides like sucrose as well as inositols which also have a strong influence on the water structure of a surface and which afford a coating after evaporation of the solvent.

The cold and dry characteristic climate of the region attenuates in the area thanks to the action of the masses of water that they constantly evaporate.

After the solvents had been evaporated, the residue was dissolved with water and the pH was adjusted to 5 using a saturated solution of NaH 2 PO 4 .

In that respect it was surprisingly found that ultrahydrophilic titanium surfaces on which salt solutions were caused to evaporate became stable in relation to the wettability loss.

A further subject matter of the present invention relates to an insecticidal, smoulderable product comprising an above-described support and the components of the above-described water-in-oil formulation according to the invention, where the nonaqueous solvent can evaporate from the support during the preparation (for example during a drying step which follows the preparation or at a later point in time).

If you do your own extractions please do not evaporate your sample dry in solvents such as acetone or hexane.

Subsequent rapid column filtration of the cold solution over about 5 g of silica gel (eluent tert.butyl methyl ether) and evaporation of the solvent in vacuo yielded the crude product.

Because these persistent organic pollutants break down more slowly in the Arctic than in warmer regions, they pose greater dangers to human and animal populations. For example, polychlorinated biphenyls (oily, man-made substances known more popularly as PCBs, and which evaporate from rubbish dumps and burning oil) have been found in the breast milk of Canadian Inuit women. PCBs cause cancer and damage the neurological and hormonal development of children. There is also high concentration of PCBs in some seal, walrus and polar bear populations which threatens their reproduction.