Titanium Azide Chloride

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>. 

Except for the azide IL where only shallow reduction of Ti(lV) is possible, the non-stationary reduction mechanism of Ti(lV) in both a titanium chloride and fluoride-1-butyl-2,3-dimethyl imidazolium tetrafluoroborate electrolyte is a sequence of one-electron steps with the formation of the Ti(lll), Ti(ll) and Ti(l) low valence... 

Chromyl azide chloride Molybdenum azide pentachloride Molybdenum azide tetrachloride Silver azide chloride Tin azide trichloride Titanium azide trichloride Tungsten azide pentabromide Uranium azide pentachloride Vanadium azide dichloride Vanadyl azide tetrachloride... 

Lithium aluminum hydride reduced )J-azidoethylbenzene to j8-aminoethyl-benzene in 89% yield [600], The azido group was also reduced with aluminum amalgam (yields 71-86%) [149], with titanium trichloride (yields 54-83%) [601], with vanadous chloride (yields 70-95%) [217] Procedure 40, p. 215), with hydrogen sulfide (yield 90%) [247], with sodium hydrosulfite (yield 90%) [259], with hydrogen bromide in acetic acid (yields 84-97%) [232], and with 1,3-propanedithiol (yields 84-100%) [602]. Unsaturated azides were reduced to unsaturated amines with aluminum amalgam [149] and with 1,3-propane-dithiol [602]. 

LACTAMS Di-n-butyltin oxide. Ily-droxylamine-O-sulfonic acid. Iodine azide. Sodium eyanoborohydride. (3-LAC TAMS Cyanuric chloride. Grignard reagents. Ion-exchange resins. Lithium phenylethynolate. Sodium dicarbonyl-cyclopentadienylferrate. Titanium(lll) chloride. Titanium(IV) chloride. Tri-phenylphosphino-Carbon tetrachloride. Triphenylphosphine-Die thyl azodicar-boxylate. Triphenylphosphine-2,2 -Dipyridyl disulfide. 

Thallous Azidodithiocarbonate A637-L Thallous-Thallic Azide A623-R Thermonuclear or Fusion Bomb. See under Atomic Bomb A499-L Thorium Dicarbide A82-R Tin Azide A624-L Titanium Carbide A82-R Titanous Chloride Method for Determination of Nitrobenzene in Aniline A415-R TNT Recovery from Scrap Amatol A161-L Toluidine. See under Aminotoluenes A265-R... 

Titanium(IV) isopropoxide, 92-95, 99 Titanocene dichloride, 163, 164 p-Toluenesulfinyl chloride, 8 p-Toluenesulfinylimidazolide, 535 p-Toluencsulfonic acid, 535 p-Toluenesulfonyl azide, 535-536 p-Toluenesulfonyl chloride, 536 p-Toluenesulfonyl cyanide, 536 /7-Toluenesulfonylhydrazine, 537... 

A similar procedure was applied to the synthesis of isomeric 1,5-dialkyltetrazoles analogs of the most important naturally occurring fatty acids, from methyl 9(10)-oxooctadecanoate, sodium azide, and titanium(rv) chloride (MeCN, reflux, 5 h) <2003EJ0885>. A convenient synthesis of tetrazoles (e.g., 524) by reaction of trimethylsilyl azide and ZnBr2 with a-dialkylated (3-ketoesters is based on the same approach (Equation 99 Table 32) <2003TL3179>. 

Cesium antimony (III) chloride, 3CsCl-2SbCls, precipitation in extraction of cesium from pollucite, 4 6 Cesium azide, 1 79 Cesium dibromoiodate(I), 5 174 Cesium dichloroiodate(I)(iodo-dichloride), 4 9 5 174 analysis of, 4 11 Cesium diiodoiodate(I), 5 174 Cesium nitrate, 4 6 1-hydrogen nitrate, 4 7 Cesium titanium alum, 6 50 Charcoal, sugar, 2 74 Chelate compounds, of 1,3-diketones, 2 11 5 105 of o-hydroxyaldehydes and o-hy-droxyphenones, 2 11... 

Dichlorobis(2,4-pentanedionato)titanium(IV), synthesis 10 Tris(2,4-pentanedionato)zirconium(IV) chloride, synthesis 11 Phenyllead(lV) azides (includes triphenyllead chloride and diphenyllead dichloride), synthesis 15 Diphenyl phosphorochloridite, synthesis 17 Mercapto derivatives of chlorocyclophosphazenes, synthesis 21 (Trichlorophosphoranylidene)amidophosphoryl dichloride, synthesis 22... 

Several alkyl and aryl azides have been reduced to the corresponding amines in good yield by tin(II) chloride at room temperature the less reactive azides require a catalytic amount of aluminum trichloride to be added. Aqueous vanadium(ll) chloride is a useful reducing agent for aryl azides heteroaryl and arenesulfonyl azides have been reduced with aqueous titanium(lll) chloride and with a molybde-num(III) catalyst generated from molybdenum(V) chloride and zinc. ... 

Samarium. 14,275 17,301 Reductions. In the re included. For example, iodii aryl azides, and sodium alk Titanium(rV) chloride an e.g., in the transformation of amines, respectively. 

A few imines have been prepared by special methods. The reaction between benzyl azide and 1-phenylcyclopropaneearbaldehyde yielded the corresponding V-benzylimine. Similarly, reaction of 2-azido-V-(cyclopropylcarbonyl)-V-methylbenzenecarboxamide with an equimolar amount of triphenylphosphane occurred spontaneously at room temperature to give a quinazolinone in essentially quantitative yield. Treatment of tricyclo[4.4.1.0 ]undeca-3,7,9-triene-2,5-dione with bis(trimethylsilyl)carbodiimide in the presence of titanium(IV) chloride afforded V,V -dicyanotricyclo[4.4.1.0 ]undeca-3,7,9-triene-2,5-diimine in excellent yield. ... 

It is now possible to polymerize isobutylene to butyl rubber in toluene instead of the usual chloromethane.215 A new titanium sandwich catalyst does the trick. European manufacturers are phasing out some chloroparaffin lubricants.216 In Japan, rubber is being chlorinated in water instead of carbon tetrachloride.217 This still involves chlorine, but does get rid of the solvent. 1,2-Dimethoxyethane is being used as an alternative to chlorinated solvents for the Schmidt Reaction for conversion of an ester to an amine through an acid azide and a carbamate (3.6).218 This eliminated accidents from polyazides made in situ from methylene chloride or chloroform. 

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