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The use of magnesium methoxide for the deprotection of alkyl esters is described. This mild reagent provides a good method to cleave esters efficiently and more importantly, allows for effective differentiation between two different esters. Dimethyl carbonate is synthesized directly from carbon dioxide and methanol in the presence of magnesium methoxide. 20 mol% DEA additions to magnesium methoxide showed enhanced stability such that a time-dependent change in the sol was not observed in air. Also enhanced the crystallization process.
Hyun Suk Jung,; Jung-Kun Lee,; Jin Young Kim,; Kug Sun Hong. Synthesis of nano-sized MgO particle and thin film from diethanolamine-stabilized magnesium-methoxide. Journal of Solid State Chemistry. 2003, 175 (2), (278-283).
Xu Yao-Chang,; Amsalu Bizuneh,; Clint Walker. Selective deprotection of alkyl esters using magnesium methoxide. Tetrahedron Letters. 1996, 37 (4) , 455-458.
Hazard Statements: H225-H301-H311-H331-H370-X
Highly flammable liquid and vapour. Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled. Causes damage to organs.
Precautionary Statements: P210-P233-P235-P235+P410-P240-P241-P242-P243-P260-P264b-P270-P271-P280-P301+P310-P303+P361+P353-P304+P340-P307+P311-P311-P312-P330-P363-P370+P378q-P501c
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep container tightly closed. Keep cool. Protect from sunlight. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF exposed: Call a POISON CENTER or doctor/physician. Call a POISON CENTER or doctor/physician if you feel unwell. Rinse mouth. Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant