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What is benzyl chloride?Benzyl chloride (BnCl) is a molecule that is a used to make pharmaceuticals and can also be used to make Phenyl-2-Propanone. Benzyl chloride is synthesized from toluene (benzyl hydride) by chlorination with TCCA (trichloroisocyanuric acid, pool chlorine) in sunlight with lithium bromide as a catalyst. The lithium bromide makes it so that you get benzyl chloride in hours instead of days. Phenyl-2-Propanone is synthesized by adding benzyl chloride in diethyl ether (or even better, dibutyl ether for higher yield) and adding magnesium turnings. You make benzyl magnesium chloride. Then you react it with acetonitrile and then do a hydrochloric acid work-up to get Phenyl-2-Propanone. I reacted toluene (benzyl hydride, paint thinner) with TCCA (trichloroisocyanuric acid, pool chlorine) in sunlight with lithium bromide catalyst and got benzyl chloride in a matter of hours. benzyl chloride - video |
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