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Topic: chalcones  (Read 1824 times)

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Offline Anpu

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chalcones
« on: April 04, 2013, 11:05:45 AM »
can any one tell my how to recrystallize my chalcones which is not possible by conventional method(ie: dissolving in ethanol and allowing to evaporate solvents
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Offline Dan

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Re: chalcones
« Reply #1 on: April 04, 2013, 12:13:24 PM »
You don't have to use ethanol. Try something else.

Start here: http://en.wikipedia.org/wiki/Recrystallization_(chemistry)
« Last Edit: April 04, 2013, 12:17:56 PM by Borek »
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Offline Anpu

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Re: chalcones
« Reply #2 on: April 04, 2013, 01:28:39 PM »
OK....I WAS PLANNING TO SYNTHESIZ CHALCONE BY REACTING 4-AMINO ACETOPHENONE AND AROMATIC ALDEHYDE(IN NaOH)...I GOT A YELLOW SOLID PRODUCT..I COULDN'T ABLE TO RECRYSTALLIZE THE SAME AND I GOT TWO DISTINCT SPOT IN TLC.I GOT PEAK FOR AMINO GROUP IN IR BUT THERE WAS NO TYPICAL PEAK FOR ALPHA BETA UNSATURATED KETONE AS IN CHALCONE...WAS IT CHALCONE OR SCHIFF BASE WHICH FORMED?? OR  WAS IT A MIXTURE OF CHALCONE AND SCHIFF BASE? I WANT CHALCONE ALONE TO BE FORMED AS I WOULD LIKE TO DO FURTHER REACTIONS ON FREE AMINO GROUP.....SUGGEST ME SOMETHING REGARDING THIS...
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Offline Dan

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Re: chalcones
« Reply #3 on: April 04, 2013, 03:57:05 PM »


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