Home >
Community >
Synthesis of Benzaldehyde and Aniline Schiff Bases
Upvote
23
Downvote
+ Purification
+ Chemistry
Posted by
Kate Prell
Synthesis of Benzaldehyde and Aniline Schiff Bases
The reaction needs acid catalysis but ethanol is fine as solvent. There will always be some starting materials left, but since the product is a solid and the reagents are liquid, the best (and cheapest) is to purify it through recrystallization.
For this, dissolve the product in the smallest quantity of hot ethanol and then add water until precipitation occurs.
The reaction needs acid catalysis but ethanol is fine as solvent. There will always be some starting materials left, but since the product is a solid and the reagents are liquid, the best (and cheapest) is to purify it through recrystallization.
For this, dissolve the product in the smallest quantity of hot ethanol and then add water until precipitation occurs.
Actually I have tried to dissolve my compound in water but it really doesnt dissolve either in cold or hot condition, so I keep on trying to use other solvent combination such as DMF, THF, DCM and etc. Some of my friends did get crystal compound but it need a lot of patience and as it involve try and error step. However regarding recrystallize using ethanol and water, is it okay if we have tried that our compound does not dissolve at all with water because referring to the concept of recrystallization, "Soluble in hot, insoluble in cold", or its actually gonna work out if I keep on going.More
Schiffs bases are susceptible to hydrolysis. Avoid water in recrystallization and ethanol for that matter. Go with the Dean-Stark trap, acid catalyst and rerecrystallization with non-hydroxylic solvents.More
The reaction needs acid catalysis but ethanol is fine as solvent. There will always be some starting materials left, but since the product is a solid and the reagents are liquid, the best (and cheapest) is to purify it through recrystallization.
For this, dissolve the product in the smallest quantity of hot ethanol and then add water until precipitation occurs.
The reaction needs acid catalysis but ethanol is fine as solvent. There will always be some starting materials left, but since the product is a solid and the reagents are liquid, the best (and cheapest) is to purify it through recrystallization.
For this, dissolve the product in the smallest quantity of hot ethanol and then add water until precipitation occurs.
More
VOTE
VOTE
VOTE
VOTE
VOTE