Kupfer

E. Kupfer, K. Neupert-Laves, M. Dobler, and W. KeUer-Scliiedeia, Tieh. Chim. Licta 65, 3 (1982). 

In pyridine, as in 2-propanol, the selectivity of reduction favors the A" -3-ketone over the 17- and 20-ketones.Kupfer suggests that resonance interactions between the double bond and the 3-ketone are smaller in pyridine and in 2-propanol than in methanol. However, by slow addition (1 hour) of one equivalent of NaBH4 in pyridine to a solution of androst-4-ene-3,17-dione i n methanol, testosterone has been obtained in good yield (72 %). Similarly,... 

Albumlngehalt, m. albumin content, albuminisieren, v.t. albuminize. Albuminisienmg, /. albuminization. Albumin-kupfer, m. copper albuminate, -stoff, m. albuminous substance, protein, -sub-stanz, f. albuminoid substance, -urie, /. albuminuria. 

Berg-kalk, m. rock time (Geol.) mountain limestone. -kiesel, m. rock flint, chert felsite. -kohle,/. (mineral) coal, -kork, m. mountain cork (a light form of asbestos), -kreide, /. rock lime, -kristall, -krystall, m. rock crystal (transparent quartz), -kupfer, n. native copper, -lasur, /. azurite. -leder, n. mountain leather (a form of asbestos), -maun, m miner. 

Brom-jod, n. iodine bromide, -kalium, n. potassium bromide, -kalzium, n., kalk, tn. calcium bromide, -kampher, tn. bromo-camphor, Pharm.) monobromated camphor, -kohlenstoff, tn. carbon (tetra)bromide. -korper, tn. Colloids) "bromide body (bromide ion), -kupfer, n. copper bromide, lauge, /. bromine lye (solution of sodium hypobromite and bromide made by passing bromine into sodium hydroxide solution), -lithium, n. lithium bromide. -Idsung, /. bro-nune solution, -magnesium, n. magnesium bromide. -metall, n. metallic bromide. 

Bnich-kupfer, n. scrap copper, -last, /. breaking load, -metall, n. broken metal, scrap metal, -modul, m. modulus of rupture, -probe, /. breaking test, breakdown test, -punkt, m. breaking point, -riss, m. (Meial.) failure crack, -silber, n. broken silver, scrap silver, -spaonung,/. breaking stress tensile strength, -stein, m. quarry stone broken stone, -stelle,/. broken place, place of fracture. -strich, m. (Math.) fraction stroke (between numerator and denominator), -stiick, n. fragment shred, -stiicke, pi. debris scrap, -teil, m. fraction, -zahl, /. fractional number. 

Cyan-kalium, n. potassium cyanide, -kalium-losung, /. potassium cyanide solution, -ko-balt, m. cobalt cyanide, -kohlensaure, / cyanocarbonic acid. -kupfer, n. copper cyanide, -laugerei, -laugung, /. cyaniding. cyanidation. -losung, / cyanide solution, -metall, n. metallic methyl cyanide, -natrium, n. sodium cyanide. -platin, n. platinum cyanide. 

Elektrolyt-kupfer, n. electrolytic copper, -nickel) n. electrolytic nickel, -silber, n. elee trolytic silver, -zinn, n, electrolytic tin. elektromagnetisch, a. electromagnetic. Elektromagnetismus, m. electromagnetism, elektro-mechsnisch, a. electromechanical. 

Ferrocyan-kaUum, n. potassium ferrocyanide. -kupfer, n. cupric ferrocyanide. -natrium, n. sodium ferrocyanide. -silber, n. silver ferrocyanide. -verbindung, /. ferrocyanide. -wasserstoff, m., -wasserstoffsMure, /. ferro-cyanic acid, -zink, n. zinc ferrocyanide. -zinn, n. tin ferrocyanide. 

Flach-kupfer, n. flat copper, -land, n. flat land, level country. 

Gar-kratie, /. refinery slag, -kupfer, n. refined copper, -leder, n. dr sed leather. 

Geif, m. silver-bearing pyrites, -erz, -kupfer, n. chalcopyrite. 

Haargefass, n. capillary vessel, haargenau, a. extremely exact or accurate, haarig, a. hairy pilose (of fabrics) nappy. Haar-kies, m. capillary pyrites, millerite. -kraft, f. capillarity, -kupfer, n. capillarj copper. 

Eratz-kupfer, n. copper from waste, -messing, n. brass cuttings, -wurzel, /. white hellebore (root). 

Kupfer, n. copper, -abfall, m. waste copper, -alaim, m. (Pharm.) cuprum aluminatum. 

Kupfer-asche, /. copper scale, -azetat, n. copper acetate, -azetylen, n. copper acetylide. -bad, n. copper bath, -barre, /. copper bar copper ingot, -belze, /. copper mordant, -blatt, n. copper foil, -blau, n. blue verditer, azurite. -blech, n. sheet copper, copper foil, -blel, n. copper-lead alloy, -bleiglanz, m. Min.) cuproplumbite. -bleivitriol, m. linarite. -blende, /. tennantite. -blute, / copper bloom (capillary cuprite), -braim, n. tils ore (earthy ferruginous cuprite),... 

Kupfer-bromid, n. copper bromide, specif, cupric bromide, copper(II) bromide, -bro-mtir, n. cuprous bromide, copper(I) bromide, -chlorid, n. copper chloride, specif, cupric chloride, copper(II) chloride, -chloriir, n. cuprous chloride, copper(I) chloride, -cyamd, Ti. copper cyanide, specif, cupric cyanide, copper(II) cyanide, -cyaniir, n. cuprous cyanide, copper(I) cyanide, -dom, m. slag from liquated copper, -draht, m. copper wire, -drahtnetz, n. copper gauze, -drehspane,... 

Kupfer-erz, n. copper ore. -fahlerz, n. tetrahe-drite tennantite. -farbe, /. copper color copper pigment. 

Kupfer-hammerschlag, m. copper scale, -hoch-ofen, m. copper blast furnace, -hiitte,/. copper smeltery, -hydrat, n. copper hydroxide, -hydroxyd, n. copper hydroxide, specif, cupric hydroxide, copper(II) hydroxide, -hydroxy-dul, n. cuprous hydroxide, copper(I) hydroxide. 

Kupfer-nickel, m. copper-nickel (niccolite). -niederschlag, m. copper precipitate or deposit. -ocher, -ocker, m. = Kupferbraun. 

Kupfer-oxydverbindung, /. cupric compound, copper(II) compound. -pecherz,n. = Kupferbraun. -platte, /. copper plate, copperplate. 

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