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Lithium t-butoxide

Lithium sulfuryl chloride batteries, 23 654 Lithium SVO cells, speciality for military and medical use, 3 430t Lithium t-butoxide, 15 148 Lithium tetraborate, 15 137 Lithium tetrafluoroborate, in lithium cells, 3 459... [Pg.531]

Chemical Co. Lithium t-butoxide and ji-butyllithium (15%) in hexane were purchased from Lithcoa Co. Sodium and potassium t-butoxides were purchased from MSA Research Corp. [Pg.516]

All manipulations were carried out under nitrogen atmosphere in a glovebox. Lithium t-butoxide (0.5 M, 20 equiv.) in THF was added to the 480 teabags. After shaking for 15 min, the base solution was removed. Sixty equivalents of benzyl bromide in DMSO was added and the teabags were shaken for 2 h. The alkylation solution was removed. Deprotonation and alkylation were repeated three times. Following washes with DMF, IP A, and DCM, the resin packets were dried under high vacuum. [Pg.514]

By treatment of the adduct with ethylmagnesium bromide and iron(m) chloride followed by acid. By acylation and ozonolysis. In the presence of lithium t-butoxide with diisopropylmagnesium alone, substantial amounts of reduction are observed. rfBy dehydration of the alcohol. "Reaction at -50° reaction in refluxing ether gave only 5%. Reaction in toluene containing 5% THF. [Pg.122]

Two methodologies for the direct C-2 arylation of thiazoles have been reported. The first one is mediated by both palladium and copper <07T1970>. Thus, the C-2 arylation of thiazole and benzothiazole with aryl iodides is carried out using copper iodide (2 equiv.) and a catalytic amount of palladium acetate under base-free conditions. The other method involves copper-catalyzed arylation with aryl iodides in the presence of lithium t-butoxide <07JA12404>. In general, reactions with lithium tert-butoxide provide better yields than those with potassium fert-butoxide. In addition, arylation with phenyl bromide, chloride or tosylate fails to provide any desired arylation products. [Pg.229]

Potassium-Graphite, 122, 378, 476 Potassium 3-aminopropylamide, 378-379 Potassium f-amyloxide, 378 379 Potassium benzeneselenolate, 373 Potassium bis(trimethylsilyl)amide, 229 Potassium f-butoxide, 7, 380-381 Potassium f-butoxide-Benzophenone, 382 Potassium carbonate, 382-383 Potassium dichromate, 383 Potassium diisopropylamide-Lithium t-butoxide, 383-384... [Pg.300]

Alkoxides, Amides, and other Bases. The use of alkoxides as initiators has recently received some attention because of their ease of handling relative to metal alkyls. In principle such species might be expected to be active only with monomers capable of yielding a more stable anion. Potassium methoxide in dimethylsulphoxide/methanol solution will oligomerize 4-vinylpyridine and here initiation seems to proceed via an acid/base equilibrium rather than by addition to the vinyl double bond (Scheme 15). With methyl methacrylate lithium t-butoxide is an initiator although an inefficient one. Furthermore, unused... [Pg.256]

Lithium t-butoxide was prepared by the reaction of equimolar quantities of n-butyllithium and t-butanol in n-hexane, in vacuo. [Pg.176]

Since the data in Tables I to IV show that 100 conversion was attained in as little as 3 minutes, it was decided to determine the actual rates for the butyllithium and lithium t-butoxide in benzene and Hi -furan. A first-order plot is shown in Figure 4 and the first-order rate constants are listed In Table V. Of the two initiators, the t-BuOLi apparently leads to the faster rate in benzene, but both... [Pg.178]

The use of lithium t-butoxide or butyllithium to polymerize e-caprolactone in benzene leads to very rapid polymerization at room tanperature to high mol. wt. C 100)8 conversion in 3 min.). [Pg.182]

On treatment with potassium t-butoxide instead of sodium t-butoxide in THF, dioxetane 2 decomposed more rapidly (kCTICL - 0.11 s 1) to emit a flash of light with AmaxCTICL = 539 nm. The chemiluminescence spectrum is illustrated in Fig. 3 together with chemiluminescence spectra for TBAF system and for the other alkaline metal t-butoxide (vide infra). 0 decreased to 4.5 x 10 though it was yet effective 10 times more than that in the TBAF system. Finally, we carried out the decomposition of 2 with lithium t-butoxide in THF. Lithium ion in general coordinates strongly to oxidoaryl anion in an organic solvent because of the smallest ion radius, thus, we did... [Pg.152]


See other pages where Lithium t-butoxide is mentioned: [Pg.318]    [Pg.572]    [Pg.69]    [Pg.73]    [Pg.220]    [Pg.99]    [Pg.704]    [Pg.572]    [Pg.345]    [Pg.318]    [Pg.549]    [Pg.549]    [Pg.84]    [Pg.498]    [Pg.844]    [Pg.416]    [Pg.582]    [Pg.824]    [Pg.486]    [Pg.486]    [Pg.394]    [Pg.175]    [Pg.176]    [Pg.177]    [Pg.177]    [Pg.179]    [Pg.295]    [Pg.248]    [Pg.210]    [Pg.61]    [Pg.106]    [Pg.991]    [Pg.214]   
See also in sourсe #XX -- [ Pg.271 ]

See also in sourсe #XX -- [ Pg.118 , Pg.215 ]

See also in sourсe #XX -- [ Pg.296 ]




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