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In organic chemistry, a methoxymethyl ether is a functional group with the formula ROCH 2 OCH 3, abbreviated MOM. It is a kind of chloroalkyl ether and, like its congeners, often employed in organic synthesis to protect alcohols. They are usually derived from 2-methoxymethyl chloride. [1] [2] Closely related to MOM ethers are ...
Drinking ether is challenging as it boils below body temperature and is not miscible with water, requiring precautions: . There is an art in swallowing the ether. The drinker first washes out his mouth with water “to cool it;” next he swallows a little water to cool his throat; then he tosses down the glass of ether; finally, he closes in with another draught of water to keep the ether ...
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In addition to diet, regular physical activity, adequate sleep, stress management and weight loss, as well as limiting alcohol and quitting smoking, can also go a long way in controlling high ...
MEM protecting groups are generally preferred to methoxymethyl (MOM) protecting groups, both in terms of formation and removal. Typically, the alcohol to be protected is deprotonated with a non-nucleophilic base such as N,N-diisopropylethylamine (DIPEA, Hunig's base) in dichloromethane followed by addition of 2-methoxyethoxymethyl chloride. [3] [4]
Ether cleavage refers to chemical substitution reactions that lead to the cleavage of ethers. Due to the high chemical stability of ethers, the cleavage of the C-O bond is uncommon in the absence of specialized reagents or under extreme conditions. [1] [2] In organic chemistry, ether cleavage is an acid catalyzed nucleophilic substitution reaction.
The order of addition of the reagents of the Mitsunobu reaction can be important. Typically, one dissolves the alcohol, the carboxylic acid, and triphenylphosphine in tetrahydrofuran or other suitable solvent (e.g. diethyl ether), cool to 0 °C using an ice-bath, slowly add the DEAD dissolved in THF, then stir at room temperature for several hours.
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