Oxidation cyclohexyl amine

Cyclohexene 1.2 dicarboximide tetramethrin Cyclohexene oxide propargite Cyclohexyl aldehyde triapenthenol Cyclohexyl amine hexazinone, hexythiazox Cyclohexyl hydroxylamine furmecyclox Cyclohexyl magnesium bromide cyhexatin Cyclohexyl magnesium chloride cyhexatin Cyclohexyl urea lenacil... 

These principles were used to assign Cls, Ols and Nls NEXAFS spectra of polymers important to the microelectronics industry. Interpretation of polyamic acid and polyimide spectra were aided by assigning the spectra of simpler polymers and monomers. The compounds studied in the form of spun films were poly(vinyl methyl ketone) (PVMK), poly(dimethyl phenylene oxide) (PMPO), poly(pyromellitimido 4,4-methylene bis-cyclohexyl amine) (PMDA-MBCA PI), and poly(pyromellitimido oxydianiline) (PMDA-ODA PI) and in the form of MBE-deposited films were poly(amic acid) (PAA), and PMDA-ODA PI. Changes in the NEXAFS spectra as a function of evaporated Cr overlayer thickness were measured for PVMK, PMPO and PMDA-ODA PI. Evolution of the NEXAFS spectra as a function of deposited organic film thickness and thermal treatment were measured for PAA on Cu and Cr substrates. 

Figure 10 illustrates the use of osmium FibreCat catalysts for the cis-dihydroxylation of cyclooctene. Two FibreCat sanples (pyridine fibre "Py-OSO4" and cyclohexyl fibre "Cyclohex-Os04") and two co-oxidants (trimethyl-amine-N-oxide and 4-methylmorpholine-N-oxide) were tested for activity over 5 catalytic cycles. Between each cycle, the fibre was filtered and washed twice in 4 1 t-butanol/water. The reason for the gradual loss in activity is not currently clear, except to say that it is not due to loss of osmium fi om the fibre. This is demonstrated in Figure 11, where we plot the amount of osmium foimd in solution after each of ftie reactions shown in Figure 10. Most of the samples showed around 5 ppm Os in solution with the highest being 10 ppm. This is no more than...

Man erhalt auf diese Weise z.B. aus Triethylamin-oxid und 1-Brom-octan bzw. Brom-essigsaure-ethylester als Elektrophil 1-Diethylamino-octan (51%) bzw. Diethylamino-essigsaure-ethylester (31%) und aus l-Methyl-piperidin-1-oxid und 1-Brom-octan bzw. Bromessigsaure-ethylester 1-Octyl-piperidin (47%) bzw. Piperidinoessigsaure-ethylester (38%). Nach dem zweiten Reaktionsweg erhalt man z. B. aus Cyclohexyl-dimethyl-amin-oxid mit Cyan-trimethyl-silan als Nukleophil (Cyclohexyl-methyl-amino)-acetonitril (71%). 

Oxide 1, when treated with primary amines like n-butyl-, cyclohexyl-, or benzylamine, gives trans-9,10-amino alcohols (264). These amino alcohols have been utilized for the preparation of aziridine 265 by treatment with trialkyl- or triarylphosphines.156... 

The latter, on reaction with methylamine yielded via the P-epoxide 373, the trans-a aminoalcohol 374, which was N-acylated to the amide 375. Acid-catalysed dehydration of the tertiary alcohol 375, led to the olefin 375, from which the key radical precursor, the chlorothioether377 was secured in quantitative yield by reaction with N-chlorosuccinimide. In keeping with the earlier results recorded for structurally related compounds, 377 on heating in the presence of ruthenium dichloride and triphenylphosphine also underwent a 5-exo radical addition to generate the cyclohexyl radical 378 which recaptured the chlorine atom to furnish the a-chloro-c/5-hydroindolone 379. Oxidation of thioether 379 gave the corresponding sulfoxide 380, which on successive treatment with trifluoroacetic anhydride and aqueous bicarbonate led to the chloro-a-ketoamide 381. The olefin 382 resulting from base induced dehydrochlorination of 381, was reduced to the hydroxy-amine 383, which was obtained as the sole diastereoisomer... 

AIBN = 2,2 -azobisisobutyronitrile 9-BBN = 9-borabicyclo [3.3.1]nonane Bn = benzyl BOC = f-butoxycarbonyl Bz = benzoyl CAN = ceric anunoninm nitrate Cp = cyclopenta-dienyl Cy = cyclohexyl DAST = diethylaminosnllur trifln-oride DBA = l,3-dibromo-5,5-dttnethylhydantoin DDQ = 2,3-dichloro-5,6-dicyano-l,4-benzoquinone DET = diethyl tartrate DIAD = diisopropyl acetylene dicarboxylate DIBAL-H = diisobutylalummum hydride DIPEA = diisopropyl ethyl amine DMDO = dimethyldioxirane HMPA = hexamethylphosphortriamide EDA = lithium diisopropy-lamide Ms = methylsulfonyl MOM = methoxymethyl NBS = iV-bromosuccmimide NMO = A-methylmorpholine iV-oxide PDC = pyridinium dichromate PMP = p-methoxyphenyl THP = tetrahydropyranyl TIPS = trisiso-propylsilyl TMANO = trimethylamine A-oxide TBDMS = t-butyldimethylsilyl Tf = trifluoromethanesulfonyl TMP = 2,2,6,6-tetramethylpiperidyl TMS = trimethylsilyl Ts = p-toluenesulfonyl. 

An acidic solution of 2,4-dinitrophenylhydrazine reacts with N-p-chlorophenyl-sulfonyl-3-ethoxy-l,2-thiazetidine 1-oxide to give (80%) the bis-2,4-dinitrophenyl-hydrazone of glyoxal. The adduct of A-sulfinyl-p-chlorophenylsulfonamide with dihydropyran is inert to catalytic hydrogenation and bromination. Treatment of two l,2-thiazetidine-3-one 1-oxides (e.g., 421) with hydriodic acid results in ring-cleavage and loss of sulfur. They are not oxidized to 1,1-dioxides by peracetic acid, ° but m-chloroperbenzoic acid accomplishes this oxidation. The unstable adducts with ketene decompose to amides with loss of hydrogen sulfide and sulfur dioxide or may be trapped by reaction with aromatic amines as shown for thiazetidine 1-oxide 422.An aldol-type condensation has been reported for A -cyclohexyl-1,2 thiazetidine-3-one 1-oxide and p-(A(A"-dimethylamino)benz-aldehyde. " Sulfur monoxide is lost in the flash-vacuum thermolysis of 422a. ... 

Such experiments show that oxalate, tartrate, and citrate give fairly strong complexes, and indeed these mixtures do not suffer quite such rapid oxidation as the other systems (57, 70). Stability constants for the complexing of U(III) by acetate, 2-hydroxy-2-methylpropionate, nitriloacetate, trans-cyclohexyl-1,2-diaminotetraacetate, ethylenedi-amine tetraacetate, and diethylenetriamine pentaacetate have been reported, but no pure compounds have been isolated (71). Thiocyanate also accelerates oxidation of the uranium, but the blue complex that is formed can be extracted with triethyl phosphate, tributyl phosphate, or better, trioctyl phosphine oxide the organic extract decomposes only slowly (45, 72). 

Sulfenamides, made from 170, by reactions involving primary and secondary amines under oxidizing conditions, include A-cyclohexyl-2-benzothiazole sulfenamide (173) and N-oxydiethylene-2-bcnzolhiazolc sulfenamide (2-(morpholinothio)benzothiazole) (174). Sulfenamides release 2-mercapto accelerators and amine during vulcanization. The amine is a secondary accelerator that brings about fast vulcanization after a slow start. Applications include in tyres and conveyor belts. They are not applicable to hot-air vulcanization processes95. 

CYCLOHEXYL ALCOHOL (108-93-0) Combustible liquid (flash point 154°F/ 68°C). Contact with oxidizers can cause fire and explosions. Violent reaction with chromium trioxide, nitric acid. Incompatible with strong acids, caustics, aliphatic amines, isocyanates. Attacks some plastics, rubber, or coatings. 

CYCLOHEXYL-4,6-DINITROPHENOL (131-89-5) Combustible solid (flash point unknown). Contact with alkaline materials or UV light may cause decomposition. Reacts with strong oxidizers, with a risk of tire or explosions. Incompatible with sulfuric acid, nitric acid, caustics, aliphatic amines, isocyanates. 

CYCLOHEXYL KETONE (108-94-1) Forms explosive mixture with air (flash point 111°F/44°C). Incompatible with amines, oxidizers, hydrogen peroxide, strong acids. Violent reaction with nitric acid above 165°F/73°C. Dissolves plastics, resins, and rubber. Attacks red metals and lead. Flow or agitation of substance may generate electrostatic charges due to low conductivity. 

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