Carbon disulfide lithium carbonate

Thioureas are metallated by ethylmagnesium bromide [30 Eq. (23)]. The magnesium-thiourea is then converted to a carbodiimide by reaction with carbon disulfide. Lithium-thioureas can also be used, but give good yields only with bulky substituents on the thiourea. Less hindered lithio-thioureas undergo reaction to give isothiocyanates, which the magnesio-derivatives do not. 

Lithium/Manganese Dioxide Lithium/Iron Disulfide Lithium/Carbon Monofluoride Lithium/Iodide... 

Several compounds such as BaZrS [12026-44-7], SrZrS [12143-75-8], and CaZrS [59087-48-8], have been made by reacting carbon disulfide with the corresponding zirconate at high temperature (141), whereas PbZrS [12510-11-1] was produced from the elements zirconium and sulfur plus lead sulfide sealed in a platinum capsule which was then pressurized and heated (142). Lithium zirconium disulfide [55964-34-6], LiZrS2, was also synthesized. Zirconium disulfide forms organometaUic intercalations with a series of low ionization (<6.2 eV)-sandwich compounds with parallel rings (143). 

Carbon-sulfur bonds can be formed by the reaction of elemental sulfur with a lithio derivative, as illustrated by the preparation of thiophene-2-thiol (201) (700S(50)104). If dialkyl or diaryl disulfides are used as reagents to introduce sulfur, then alkyl or aryl sulfides are formed sulfinic acids are available by reaction of lithium derivatives with sulfur dioxide. 

Imidazolidine-2-thiones functionalised on the four-position can be obtained by reaction of HN(CH3)R with n-butyllithium, followed by addition of carbon disulfide. The lithium thicarbamate can then by further lithiated and cyclisation occurs upon reaction of this species with an imine (S) [22],... 

Attempts to follow a published procedure for the preparation of 1,3 -dithiole-2-thione-4,5-dithiolate salts [1], involving reductive coupling of carbon disulfide with alkali metals, have led to violent explosions with potassium metal, but not with sodium [2], However, mixtures of carbon disulfide with potassium-sodium alloy, potassium, sodium, or lithium are capable of detonation by shock, though not by heating. The explosive power decreases in the order given above, and the first mixture is more shock-sensitive than mercury fulminate [3],... 

Dithioacids have been generated from carbon disulfide with Grignard reagents or alkyl lithium at 0 °C. Subsequent treatment with sulfonamide in situ gives the corresponding both aliphatic as well as aromatic thioamides in 70-90% yields (Scheme 10).31... 

N-Allenylazetidinone 181 rearranges to cephalosporin 182 in the presence of lithium chloride (Eq. 13.62) [70], This is a very unusual reaction that is presumed to be initiated by chloride ion-induced cleavage of the disulfide to give sulfenyl chloride 183. Thiolate attack at the allene sp carbon atom of 183 generates ester enolate 184, which cyclizes to 182. The reactivity of the allene function in 181 ensures the success of the reaction. 

Benzofuranyl)butanoic acid readily forms the acid chloride, and this undergoes intramolecular Friedel-Crafts acylation on treatment with tin(IV) chloride in carbon disulfide at room temperature, providing 1,2,3,4-tetra-hydro-l-dibenzofuranone (54%). " This intermediate has been converted to dibenzofuran by lithium aluminum hydride reduction and subsequent dehydrogenation, to 1-methyldibenzofuran by Grignard reaction and dehydrogenation, and to 1-dibenzofuranol by reaction with iV-bromosuccinimide and subsequent dehydrobromination with pyridine. 

A flame-dried 2-liter reactor was charged with (oxiran-2-yl) methyl acrylate (312 mmol), lithium bromide (1 g), and 300 ml THF and then treated with the dropwise addition of carbon disulfide (410 mmol). The mixture was stirred at ambient temperature for 4 hours and then at 45°C for 30 hours and concentrated. The residue was purified by column chromatography using silica gel with hexane/acetone, 70 30, respectively, and the product isolated as an orange-colored liquid. 

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. 

It must be noted that while the reaction of Grignard reagents and that of cuprates with carbon disulfide are generally well controlled, the reaction of lithium reagents has been only successfully reported in a few particular cases [150]. The reaction is quite complex in the general case and a clarification necessary. 

Solid Cathode Cells. Solid cathode cells include lithium-manganese dioxide cells, lithium carbon inonofluoridc cells, lithium iron disulfide cells, and lithium—iodine cells. 

The aromatic character of the dibenzo derivative 2 has also been calculated. Studies on the behavior of the deep red anion 3, as a potential IOji heteroaromatic system, were described previously <1996CHEC-II(9)268>. H NMR spectra (NMR - nuclear magnetic resonance) of l,3-dithiepin-2-carbodithiolate 4, a ligand obtained from the reaction of carbon disulfide with the lithium salt of 1,3-dithiepin, as well as its palladium salt suggest a good deal of Hiickel aromatic character in the seven-membered dithiepin ring <1991ICA(185)169>. 

For example, polymers having hydroxyl end groups can be prepared by reaction of polymer lithium with epoxides, aldehydes, and ketones III-113). Carboxylated polymers result when living polymers are treated with carbon dioxide (///) or anhydrides (114). When sulfur (115, 116), cyclic sulfides (117), or disulfides (118) are added to lithium macromolecules, thiol-substituted polymers are produced. Chlorine-terminus polymers have reportedly been prepared from polymer lithium and chlorine (1/9). Although lithium polymers react with primary and secondary amines to produce unsubstituted polymers (120), tertiary amines can be introduced by use of p-(dimethylamino)benzaldehyde (121). 

It was found that treatment of the corresponding dibromostannane with lithium naphthalenide afforded stannylene <1995OM3620>. The reaction of the latter with an excess of carbon disulfide resulted in the formation of the unsymmetrical ethene 24 (Scheme 53). Although the details of the mechanism are not clear, it is considered that the reaction proceeds via the formation of dithiocarbene 142 followed by dimerization to give a product that is thermally unstable and easily loses carbon disulfide. Thermolysis of 24 afforded symmetrically substituted ethene 143, in a quantitative yield via extrusion of carbon disulfide. 

Reactions of lithium bis(trimethylsilyl)phosphide (5) have recently been reviewed11. Some reports have been published concerning the structure of 559. Compound 5 was used in the preparation of phosphaethenes and phosphaethynes (equation 37 and Scheme 4)28 31. Reaction of 5 with benzophenone led to the observation of a signal probably due to Me3SiP=CPh231. Treatment of 5 with carbon disulfide and then chlorotrimethylsilane afforded a thiadiphosphole derivative (equation 38)60. Reaction of LiP(SiMe3)2 DME with a thiuronium iodide formed a phosphaethene (equation 39)61. 

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