Oxidation, viii

Glasson, P. R. (1963). Reactivity of lime and related oxides. VIII. Production of activated lime and magnesia. Journal of Applied Chemistry, 13, 111-19. 

Schulze, D.G. (1984) The influence of aluminum on iron oxides VIII. Unit-cell dimension of Al-substituted goethites and estimation of A1 from them. Clays Clay Min. 32 36-44... 

Analog wird aus 2,3-Bis-[hydroximino]-5,5-dimethyl-l-oxo-cyclohexan bei der Dehydrierung mit Trikalium-hexacyanoferrat (III) ausschlieBlich das Furazan-2-oxid Vll - das instabilere Iso-mere - gebildet, das sich beim Kochen in Petrolether (100 120°)/Toluol in das stabilere Fu-razan-2-oxid VIII umwandelt220. 

Chlor-4-methyl-furazan-2-oxid (VIII), hergestellt aus 1,2-Bis-[hydroximino]-propan mit Di-stickstofftetroxid in Diethylether [im Gemisch mit 4-Chlor-3-methyl-furazan-2-oxid (IX) (IX VIII = 2,4)], lagert sich beim Erwarmen zum Furazan-2-oxid IX um361 ... 

Acetyl methyl nitrolic acid (VI) is the well known product of the reaction of HN03 on acetone. After loosing HN02 it condenses with acetylene to yield 3-acety-lisoxazole (VII). Through the same sequence of reactions it eventually forms IX. Dimerization of the nitrile oxide (VIII) yields diisoxazoylfuroxane (X). 

COOH) IV/lb, 839/845 (Alkohol-Oxid.) VIII, 437 (Malonester-Synth.)... 

Essigsaure -ethylester IV/la, 913 (In-Oxid.) VIII, 526 (Ver-ester.), 558 (Claisen-Tischt-schenko-Reakt.) X/l, 460 (C-N02 - COOR) E5,... 

Oxid.) VIII, 408 (Alkohol-Oxid.) E21b, 1701 (CO-Fe -+ COOH) Thallium-Salz XIII/4, 379 -methylester ES, 669 Tellurolane 1-Oxo- El2b, 642 (R2Te + 02), 642 (R2TeCl2 + OH-)... 

Cope, A. C., Ciganek, E., Howell, C. F., Schweizer, E. E. Amine oxides. VIII. Medium-sized cyclic olefins from amine oxides and quaternary ammonium hydroxides. J. Am. Chem. Soc. 1960, 82,4663-4669. 

MeOH vi, PhCOCl-pyridine vii, Os04-A/-methylmorpholine oxide viii, TsCl-pyridine, ix,... 

Reagents i, ethylene glycol-H ii, CrO,-HOAc iii, base iv, CHjNj v, Al(OPr )j-Pr OH-toluene vi, dihydropyran vii, bipyridine-chromium oxide viii, aq. HOAc ix, Et30+ BF4 x, NaBH4 xi, H30 ... 

Reagents i, NaH-(MeO)jCO ii, NaOMe-CHi =QMe)CHO, -70°C iii, 6N-HC1-dioxan, room temp. iv, TSCI-C5H5N v, anhydr. HOAc-NaOAc, reflux vi, H2-Pd/C vii, Jones oxid. viii, OH. ... 

The reaction of cyanogen-di-N-oxide (VIII) with hydrogen bromide in glacial acetic acid has been used as a quantitative analytical method ( ), and aqueous hydrochloric or hydrobromic acid can be added to afford the corresponding dihalide (IX)... 

Schoenewaldt et al. (1952) observed that when the sulfuric acid rearrangement conditions of the 9a, 1 la-oxide (VIII) are extended from a few minutes (leading to the unsaturated did VII) to several hours, the chief product is A -2 -ergostadien-3 8-ol-7-one. It appears very likely that the procedure of Djerassi et al. (1951c, 1952c) developed for the conversion of such A -7-ketones to 11-ketones in the pregnane series would also prove applicable to these ergostadiene derivatives. 

Sitostanol, see Stigmastanol /3 -Sitosterol (22,23-dihydro-stigmasterol), configuration, VIII, 302 oxidation, VIII, 302 7 -Sitostanol, see Poriferastanol Skin,... 

Vitamin Da (calciferol), VI, 90 degradation, VIII, 258 oxidation, VIII, 259 toxic effects, VI, 90... 

Kynurenine Hydroxylase. Kynurenine is hydroxylated by an enzyme prepared from mitochondria of animal livers. The properties of this enzyme are very similar to those described from the hydroxylation of other aromatic amines, steroids, and phenylalanine molecular oxygen is consumed and an equivalent of TPNH is oxidized simultaneously with kynurenine oxidation (VIII). 

V, AcaO vi, Ha-Pd/C vii, Collins oxidation viii, (MeOaXOP CH-COCsHu ix, Zn(BHi)2 x, hydrolysis followed by chromatography xi, NaOH xiii, HOAc-HjO. 

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