LITHIUM METHOXIDE | 865-34-9
LITHIUM METHOXIDE | 865-34-9
LITHIUM METHOXIDE Chemical Properties,Uses,Production
Preparation
Lithium methoxide (3 cm3, 3mmol of 1.0M solution in methanol) was added to (11) (1.0 g, 2.8 mmol) in methanol (15 cm3) at 0 °C, with stirring, under an atmosphere of nitrogen. The mixture was stirred at room temperature for 67 h, then water (20 cm3) was added and the mixture extracted into dichloromethane (DCM). The DCM solution was dried (MgS04) and evaporated giving a solid ( 1.1 g) shown to consist of 4- methoxy-3,5-difluoro-2,6-dibromopyridine (22g) ( 19% ), 2,6-dibromo-4,5-dimethoxy-3- fluoropyridine (22h) (5%), (23b) (39% by comparison with authentic sample) and (23a) (36%). Neither column chromatography (eluting DCM and petrol 7: 3) nor preparative scale GLC ( 10% SE30, 140 oC) gave adequate separation of the products. However, a carbon nmr spectrum and GCMS of a mixture of (22g) and (23b) was obtained and the carbon spectra was assigned by comparison with that of (23b ).
Chemical Properties
Lithium Methoxide [865-34-9], LiOCH3, Mr 37.98, is a white solid that is soluble in methanol but virtually insoluble in aprotic organic solvents. It is commercially available as a 99 % fine crystalline solid and as 10 % solution in methanol. It can be used as base, especially as catalyst for transesterification reactions.
Uses
Employed in sol-gel synthesis of lithium borophosphates.
Uses
Lithium methoxide is used in sol-gel synthesis of lithium borophosphates. It is also useful for deprotonation reactions in organic synthesis. Further, it serves as a mild base in organic synthesis especially in transesterifications.
Purification Methods
The most probable impurity is LiOH due to hydrolysis by moisture. It is important to keep the sample dry. It can be dried by keeping in a vacuum at 60-80o under dry N2 using an oil pump for a few hours. Store it under N2 in the cold. It should not have bands above cm-1, IR has , , and cm-1 in KBr. [Suebold J Org Chem 21 , Beilstein 1 IV , .]
Lithium Methoxide, 865-34-9
Lithium Methanol Solution
A lithium methanol solution typically refers to a solution where lithium salts (such as lithium chloride or lithium perchlorate) are dissolved in methanol, a type of alcohol. This kind of solution is often used in chemical and electrochemical applications, including battery technology, organic synthesis, and as a reagent in various laboratory processes.
Other Name&#;Lithium Methoxide
English Name&#;Lithium Methoxide&#;Lithium methanolate&#;Lithium methylate; methoxylithium&#; Methanol, lithium salt
Molecular Formula&#;CH3OLi Molecular weight&#;37.97
CAS No.: 865-34-9
1. Performance and use
This product is a methanol solution of lithium methoxide. It is mainly used as A shrinkage agent and strong base catalyst for organic synthesis transesterification reaction, and methoxylation agent for the preparation of vitamin A, vitamin B, sulfadiazine drugs. A small amount is used in pesticide production. It can also be used as a catalyst for edible fatty oils.
&#; Battery Electrolytes: In some lithium battery chemistries, lithium methanol solutions can be used as electrolytes, though more commonly, solutions with organic carbonates are used.
&#; Organic Synthesis: Lithium methanol solutions can act as a reagent or catalyst in organic reactions, particularly where a polar aprotic solvent is needed.
&#; Chemical Analysis: In analytical chemistry, such solutions might be used in titrations or other procedures where lithium ions need to be present in a methanol medium.
&#; Electrochemical Studies: Lithium methanol solutions are also used in electrochemical experiments to study the behavior of lithium ions in various solvents.
2. Lithium Methoxide In Methanol Technical index
Regular item
Index
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Appearance
Clear liquid
Free alkali
<0.1%
Impurity
<0.1%
Methanol content
89-90%
Lithium methanol content
9.9-10.1%
3. Use preventive measures
As lithium methanol is not easy to preserve, this product is a colorless and transparent solution of methanol containing 10%, which is volatile and flammable. It is easy to absorb water and decompose from the air to produce lithium hydroxide, which makes the solution cloudy, reacts violently in water, and has toxicity. Protective measures should be taken after opening the lid, and the lid of the barrel should be sealed and stored after use.
4. Properties:
Conductivity: The solution conducts electricity, making it useful in electrochemical applications.Reactivity: Methanol is a reactive solvent, and lithium salts can alter its reactivity. Care must be taken, especially when working with highly reactive lithium compounds, as they may react with methanol or other components.
Solubility: The solubility of lithium salts in methanol varies depending on the specific salt and the concentration of the solution.
Conductivity: The solution conducts electricity, making it useful in electrochemical applications.Reactivity: Methanol is a reactive solvent, and lithium salts can alter its reactivity. Care must be taken, especially when working with highly reactive lithium compounds, as they may react with methanol or other components.Solubility: The solubility of lithium salts in methanol varies depending on the specific salt and the concentration of the solution.
5. packaging and storage
This product is packed in composite plastic drum, net weight 175kg per barrel, beware of moisture, high temperature and sunlight, storage.
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Lithium Methoxide In Methanol is a versatile chemical mixture with applications across several fields, particularly in research and industrial settings. However, due to the reactivity and toxicity of methanol, careful handling and safety precautions are essential.