Camphor potassium

Isopropylbenzyl salicylate Isopropyl dibenzoylmethane Isopropyl methoxycinnamate 4-Methylbenzylidene camphor Octocrylene Octrizole Octyl dimethyl PABA Octyl methoxycinnamate Octyl triazone Phenylbenzimidazole sulfonic acid Polyacrylamidomethyl benzylidene camphor Potassium methoxycinnamate Potassium phenylbenzimidazole sulfonate Red petrolatum Sodium phenylbenzimidazole sulfonate TEA-phenylbenzimidazole sulfonate... 

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. 

Gotti et al. [42] reported an analytical study of penicillamine in pharmaceuticals by capillary zone electrophoresis. Dispersions of the drug (0.4 mg/mL for the determination of (/q-penicillaminc in water containing 0.03% of the internal standard, S -met hy I - r-cystei ne, were injected at 5 kPa for 10 seconds into the capillary (48.5 cm x 50 pm i.d., 40 cm to detector). Electrophoresis was carried out at 15 °C and 30 kV, with a pH 2.5 buffer of 50 mM potassium phosphate and detection at 200 rnn. Calibration graphs were linear for 0.2-0.6 pg/mL (detection limit = 90 pM). For a more sensitive determination of penicillamine, or for the separation of its enantiomers, a derivative was prepared. Solutions (0.5 mL, final concentration 20 pg/mL) in 10 mM phosphate buffer (pH 8) were mixed with 1 mL of methanolic 0.015% 1,1 -[ethylidenebis-(sulfonyl)]bis-benzene and, after 2 min, with 0.5 mL of pH 2.5 phosphate buffer. An internal standard (0.03% tryptophan, 0.15 mL) was added and aliquots were injected. With the same pH 2.5 buffer and detection at 220 nm, calibration graphs were linear for 9.3-37.2 pg/mL, with a detection limit of 2.5 pM. For the determination of small amounts of (L)-penicillamine impurity, the final analyte concentration was 75 pg/mL, the pH 2.5 buffer contained 5 mM beta-cyclodextrin and 30 mM (+)-camphor-10-sulfonic acid, with a voltage of 20 kV, and detection at 220 nm. Calibration graphs were linear for 0.5-2% of the toxic (L)-enantiomer, with a detection limit of 0.3%. 

Methylcyclohexene, from 2-methyl-cyclohexanone tosylhydrazone and methyllithium, 51,69 Methylenecyclopropanes, 50,30 Methyl iodide, with triphenyl phosphite and cyclohexanol, 51,45 with triphenyl phosphite and neopentyl alcohol, 51,44 METHYL ftrans-2-IODO-l-TETRA-LIN)CARBAMATE, 51,112 Methyl (frans-2-iodo-l-tetralin)carba-mate, with potassium hydroxide to give 1,2,3,4-tetrahydronaph-thalene(l,2)imine, 51,53 Methyllithium, with camphor tosylhydrazone to give 2-bomene, 51, 66... 

Potassium triethylborohydride, 260 Sodium borohydride, 21 Ring-forming reactions 2,2 -Dihydroxy-1,1 -binaphthyl, 113 Other asymmetric reactions Camphor-10-sulfonic acid, 62 Di-jjL-chlorobis(l,5-cyclooctadiene)di-rhodium-2,3-0-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenyl-phosphine)butane, 153... 

The ether is distilled from the combined extracts and the crude triethyl carbinol is dried with 10 g. of anhydrous potassium carbonate. The alcohol is then distilled at atmospheric pressure, and the portion (80-90 g.) boiling at 139-1420 is collected. The low-boiling distillate is treated with 5 g. of anhydrous potassium carbonate, filtered and redistilled, whereby another portion (about 25 g.) of triethyl carbinol boiling at 139-1420 is obtained. The process is repeated once, or twice if necessary, and an additional 20 g. is collected (Note 5). The total yield is 125-135 g. (82-88 per cent of the theoretical amount) (Note 6). Triethyl carbinol is a viscous liquid with a penetrating, camphor-like odor. 

Bulk powders are made in considerable variety, but they consist always of nitrocellulose fibers which are stuck together but are not completely colloided. Some contain little else but nitrocellulose others contain, in addition to potassium and barium nitrates, camphor, vaseline, paraffin, lampblack, starch, dextrine, potassium dichromate or other oxidizing or deterrent salts, and diphenylamine for stabilization, and are colored in a variety of brilliant hues by means of coal-tar dyes. In the United States bulk powders are manufactured by one or the other of two processes, either one of which, however, may be modified considerably the materials are incorporated under wooden wheels, grained, and partially gelatinized, or the grains arc formed in a still where a water suspension of ptdped nitrocellulose is stirred and heated with a second liquid, a solvent for nitrocellulose which is volatile and immiscible with water. 

Both isomeric forms of (+)- and (—)-(camphorylsulfonyl)oxaziridines are available by oxidation of the corresponding sulfonimines with buffered potassium peroxymonosulfate (oxone). Since oxidation can only take place from the endo-fa.ce of the C=N double bond due to steric blocking of the exo-face, a single oxaziridine isomer is obtained. The enantiomerically pure sulfonimines can be prepared in three steps in better than 80% yield from inexpensive (+)- and (—)-camphor-10-sulfonic acids. Alternatively they are commercially available200. 

Bis(acctonitro)chloronitropalladium(II). /-Butyl hydroperoxide-Dialkyl taitratesr-Vanadium(IV) isoproxide. t-Butylhydroperoxide-Molybdenum carbonyl. t-Butylhydroperoxide-Vanadyl acetylacetonate. [(— )-Camphor-10-ylsulfonyl]-3-aryloxaziridines. m-Chloroperbenzoic acid-Potassium fluoride. Dimethylsulfonium methylidc. 3,5-Dinitroperbenzoic acid. Hydrogen peroxide-Vilsmeier reagent. p3-Oxohexakis(p-... 

An unusual cyclopropanation of 9-bromocamphor derivatives (5) to a 7-spirocyclo-propyl camphor derivative (6) has been realized by the action of potassium r-butoxide (or sodium hydride) in warm DMSO (Scheme 8).29 The exo-hydroxy group and a nonhydrogen endo-substituent at C(2) were proven to be essential structural elements, and the solvent DMSO the sole effective reaction medium. 

The complete process was as follows camphoric anhydride from camphoric acid was reduced with sodium amalgam to campliolide, and this combined with potassium cyanide gave homocamphoric nitrile. The nitrile was hydrolysed, and the calcium salt of the resulting homocamphoric acid, on heating, gave camphor ... 

Resolution was effected by treatment with the silver salt of d-camphor-sulphonic acid and subsequent decomposition of the camphor-sulphonate formed, by means of potassium iodide ... 

Attempts at the reaction of isatins with menthone, pulegone, camphor [118], isopulegone, dihydroisopulegone, tetrahydrocarvone, or norcamphor [19] were unsuccessful even with prolonged heating (potassium hydroxide, water, ethanol, 100°C, 3 days). 

Other ingredients that may be found in smokeless powders include camphor, carbazole, cresol, diethyleneglycoldinitrate (DEGDN), dimethylse-bacate, dinitrocresol, di-normal-propyl adipate, 2.4-dinitrodiphenylamine, PETN, TNT, RDX, acaroid resin, gum arabic, synthetic resins, aluminum, ammonium chlorate/oxalate/perchlorate, pentaerythritol dioleate, oxamide, lead carbonate/salicylate/stearate, magnesium oxide, sodium aluminum fluoride, sodium carbonate/bicarbonate, petrolatum, dioctylphthalate, stannic oxide, potassium cyrolate, triphenyl bismuth. 

Analysis of the nny 82 ammunition as previously detailed shows that it uses a mercuric corrosive primer. Analysis of the Chinese 351/73 ammunition revealed that it has a copper-coated iron-jacketed bullet with an iron core and a lead tip, the cartridge case is steel with a brown colored lacquered finish, a brass primer cup, and the propellant is single based with DPA, 2 x nitrodiphenylamines, camphor, and contains no inorganic additives, and the discharged primer composition is antimony, potassium, chlorine, mercury, tin, sulfur, iron, manganese, phosphorus, zinc, and lead in descending order (lead, antimony, mercury type). 

According to later experiments of Walker and Cormack,1 it is possible to obtain isolauronolic acid by electrolyzing the methy 1-ester-potassium salt of camphoric acid ... 

Regeneratable polymeric organotin dihydride beads have been used to reduce halides selectively (e.g. 3-bromocamphor to camphor).52 /3-Unsubstituted cyclohex-enones undergo exclusive and almost quantitative 1,4-reduction by potassium tri-s-butylborohydride to the corresponding saturated ketone [e.g. (16)] 53 reductive alkylation of carvone proceeds similarly to (17 R = Me, X = H).53 In contrast,... 

Camphorquinone is extremely sensitive to oxidizing agents and yields camphoric acid when merely boiled in alkaline solution m the presence of air9 The diketone is boiled during one day with 3-4 molecular equivalents of alcoholic potassium hydroxide The alcohol is then evaporated off, and the residue taken up in water. After filtering, the camphoric acid is precipitated with dilute sulfuric acid and recrystallized... 

Preparation. Both the title zirconium catalyst (1), and the corresponding hafnium derivative (2) have been synthesized according to Scheme 1. Addition of 2 equiv of 2-bomen-2-yllithium (4) (generated via the Shapiro reaction from (-b)-camphor (3)) to ethyl formate gives bis(2-bomen-2-yl)methanol (5). Cycliza-tion of alcohol (5) is carried out with Potassium Hydrogen Sulfate at 100-150 °C to afford dibornacyclopentadiene (6). Deprotonation of (6) with n-Butyllithium followed by reaction with Zir-conium(IV) Chloride affords (1). Reaction with HfCl4 affords (2). 

Reduction of ketones. Saturated and conjugated ketones can be reduced by the reagent to alcohols, probably by a mechanism similar to electrochemical reduction (as illustrated for acetophenone in scheme I). In some cases, ptnacols are formed as well. Thus acetophenone is reduced to the alcohol (45 % yield) and the pinacol (45% yield). Generally the alcohol is the predominant product. For example, benzophenonc is reduced to benzhydrol in 98 % yield. a,)3-Unsaturated ketones are reduced to saturated alcohols. Reduction of camphor gives predominantly the exo-alcohol note that reduction with sodium in alcohol or with potassium, in the presence of graphite (not intercalated), gives predominantly the endo-alcohol. 

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