Aldehyde-reactions

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From Omilili

Solvent for aldehyde reaction with amine

Hi, I plan to use trimethoxysilyl alkyl aldehyde to react with amine terminated polymer. But I want Hi, I plan to use trimethoxysilyl alkyl aldehyde to react with amine terminated polymer. But I want to do the reaction in... organic solvents instead of water. Do you guys know what solvents I can use? thanks

Solvent for aldehyde reaction with amine

Hi, I plan to use trimethoxysilyl alkyl aldehyde to react with amine terminated polymer. But I want to do the reaction in organic solvents instead of water. Do you guys know what solvents I can use Hi, I plan to use trimethoxysilyl alkyl aldehyde to react with amine terminated polymer. But I want to do the reaction in...

From Yahoo Answers

Question:In the following reaction, a primary alcohol (ethanol) is fully oxidized to a carboxylic acid(acetic acid). What is the aldehyde intermediate that was formed? I don't get what an aldehyde intermediate is.

Answers:The aldehyde intermediate is the species that is formed in the first stage of the oxidation of an alcohol. After this the aldehyde is rapidly oxidized further to the carboxylic acid which is the end stage of oxidation of the alcohol. Most primary aldehydes are unstable toward oxidation so they will go quickly to the carboxylic acid stage without being isolated as an aldehyde. In this case, the reaction scheme would look something like this: CH3CH2OH + [O] --> CH3CHO CH3CHO +[O] --> CH3COOH This type of reaction occurs when using strong oxidizing agents like dichromate ion, Cr2O7, and permanganate ion, MnO4^-. The aldehyde is not isolated in these cases but is simply a part of the mechanism of the reaction. The aldehyde intermediate formed above is acetaldehyde. These types of reactions can be studied using fast spectroscopic techniques which can allow the intermediate to be observed. One can actually stop the reaction at the aldehyde stage when using a mild oxidizing agent like PCC, pyridinium chlorochromate. See link for structure.

Question:Acetal compounds are the products of the reactions of aldehydes and alcohols. Show the acetal compounds reaction formed by the reaction of acetaldehyde and methyl alcohol. This reaction is known as a dehydration reaction reaction why?

Answers:because H2O gets out

Question:I know that a ketone will result from a reaction of a 2 degree alcohol with PCC and that aldehyde will result from a reaction of 1st degreee alcohol with PCC. But will Ketone, or neither ketone/aldehyde result from a reaciton of a third degree alcohol with PCC? Why? Can someone explaing it to me... thanks

Answers:I'm not quite sure what "PCC" is, but I do know that it is necessary to have at least one hydrogen atom on the carbon atom holding the -OH group of an alcohol before it can be oxidides. Tertiary alcohols don't have this H atom, so only primary and secondary alcohols can be oxidised.


From Youtube

Aldehydes, ketones, enolates (3)

Organic chemistry: Nucleophilic attack on aldehydes and ketones; acetals and ketals. Enolates. Ylides; Wittig reaction. Mechanism problems. This is a recording of a tutoring session, posted with the students' permission. These videos are offered on a "pay-what-you-like" basis. You can pay for the use of the videos at my website: www.freelance-teacher.com For a list of all the available video series, arranged in suggested viewing order, go to my website. For a playlist containing all the videos in this series, click here: www.youtube.com


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