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Results-Wittig - low This could have been caused by not...

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Results We began our experiment with .971 grams of benzyltriphenylphosphonium chloride and .568 grams of 9-anthraldehyde. The final mixture of benzyltriphenylphosphonium chloride, 9-anthraldehyde, and sodium hydroxide looked copper. Our final product, after suction filtration, had a weight of .460 grams. This gave a percent yield of 65.7 percent. The melting point of the crystals was 105-115ºC. The actual melting point of the desired product is 131-133ºC. Our melting point is slightly
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Unformatted text preview: low. This could have been caused by not efficiently drying the product, or not removing all of the dichloromethane. Conclusion In this experiment, we recovered a good amount of crystals, but the product did contain some impurities. In order to prevent impurities, if we had to perform this experiment again, we would improve our separation techniques and allow the simple distillation to run longer. Questions...
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