Titanium chloride-Sodium

These facts would suggest that die electrolysis of molten alkali metal salts could lead to the inuoduction of mobile elecU ons which can diffuse rapidly through a melt, and any chemical reduction process resulting from a high chemical potential of the alkali metal could occur in the body of the melt, rather than being conhned to the cathode volume. This probably explains the failure of attempts to produce tire refractoty elements, such as titanium, by elecU olysis of a molten sodium chloride-titanium chloride melt, in which a metal dust is formed in the bulk of the elecU olyte. 

Treatment of N-benzoyl-L-alanine with oxalyl chloride, followed by methanolic triethylamine, yields methyl 4-methyl-2-phenyloxazole-5-carboxylate 32 <95CC2335>. a-Keto imidoyl chlorides, obtained from acyl chlorides and ethyl isocyanoacetate, cyclise to 5-ethoxyoxazoles by the action of triethylamine (e.g.. Scheme 8) <96SC1149>. The azetidinone 33 is converted into the oxazole 34 when heated with sodium azide and titanium chloride in acetonitrile <95JHC1409>. Another unusual reaction is the cyclisation of compound 35 to the oxazole 36 on sequential treatment with trifluoroacetic anhydride and methanol <95JFC(75)221>. 

Nitric Add/Sulfuric Add — Titanium(III) Chloride—Sodium Nitrite—... 

Nitric Acid/Sulfuric Acid-Titanium(III) Chloride-Sodium Nitrite-N-(l-Naphthyl)-ethylenediamine... 

Fig. 2. Sequential extraction of Arsenic (MG-magnesium chloride, PHOS-sodium hypo phosphate, HCL-hydrocihoric acid, OX-oxalic acid, ToCEB- titanium chloride with EDTA, NIT- nitric acid).

As noted earlier, most classical antidepressant agents consist of propylamine derivatives of tricyclic aromatic compounds. The antidepressant molecule tametraline is thus notable in that it is built on a bicyclic nucleus that directly carries the amine substituent. Reaction of 4-phenyl-l-tetralone (18) (obtainable by Friedel-Crafts cyclization of 4,4-diphenyl butyric acid) with methyl amine in the presence of titanium chloride gives the corresponding Schiff base. Reduction by means of sodium borohydride affords the secondary amine as a mixture of cis (21) and trans (20) isomers. The latter is separated to afford the more active antidepressant of the pair, tametraline (20). 

Salts, sawdust, scrap metals, shales, silicates, soda ash, sodium chloride, sodium compounds, sodium cyanide, sponge iron, steel turnings, stone wool, sugar, sulfur Teas, tin, titanium sponge, turnings Urea, urea formaldehyde Vanadium, vermiculite, vitamins Waxes, welding powder, wood dust, wood shavings Yeast (dry)... 

A 3,245-g sample of titanium chloride was reduced with sodium to metallic titanium. After the resultant sodium chloride was washed out, the residual metal was dried and found to weigh 0.819 g. What is the empirical formula of the original compound of titanium ... 

I HIOL ESTERS, 61,48 preparation of, 61, 134 Thiophosgene, 61, 71 Titanium chloride [7705-07-9], 60, 113 Titanium trichloride, 60. 113 p-Toluenesulfonamide,, V-chloro-, sodium salt. 61, 85... 

As an alternative to ammonium iodide/TFA, the use of titanium(IV) chloride/sodium iodide in TFA has been proposed for clevage of the acid-labile protecting groups and reduction of Met(O) residues.However, this reagent, besides bearing all the disadvantages of the use of heavy metals in peptides, leads to time-dependent reduction of disulfide bridges as well as to side products at the level of Trp residues. 

Other reagents which have occasionally been used to cleave hydrazides include diborane (which also reduces the carbonyl groups), sodium naphthalenide, 0,0-diethyldithiophosphoric acid, (EtO)2PS2H, - and sulfur monochloride. Nickel-aluminum alloy in aqueous methanolic potassium hydroxide is a good reagent for reductively cleaving a number of N—N bonded compounds, such as A -methyl-A -phenylhydrazine and Af/Z-dimethylnitrosamine. - Nitrosamines have also been cleaved with titanium(IV) chloride-sodium borohydride and lithium aluminium hydride. 

As a catalyst for the ring condensation Lewis acids such as for instance zinc chloride, zinc bromide, boron trifluoride, ferric chloride, stannic chloride, titanium chloride or iodine are used, zinc chloride and zinc bromide having proved to be more particularly suitable. Water binding substances such as neutral substances as for instance magnesium sulfate, sodium sulfate, calcium sulfate or molecular sieves may be used, the last-named having proved more particularly suitable. 

N-OXIDES Diphosphorus tetraiodide. Hexachlorodisilane. Molybdenum(V) chloride-Zinc. Titanium(IV) chloride-Sodium borohydride. 7... 

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