Organic synthesis
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The study of organic synthesis is an excellent way of learning all the organic reactions you need to know in an advanced chemistry course.
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Recently Asked Questions
- I'm currently doing my A2 Chemistry investigation on the synthesis of aspirin in 3 steps (2-aminomethylbenzoate to 2-hydroxymethylbenzoate, to 2-hydroxybenzoic acid, and then to aspirin). At each stage, it asks me to identify the products produced. How would I go about doing this? 200210
- I was wondering how the concentration of a phosphoric acid catalyst would affect the synthesis of aspirin. It would be determined by the yield - would there be a difference in the yield of different concentrations of the catalyst were used? If so, what are the mechanisms behind it? 131009
- I have a few questions to ask about an experiment called preparation of an ester. 1. Why is there extensive charring and alkene formation on preparation of ester using branched chain alcohol? 2. What are the main impurities present in the distillate during the distillation of a mixture (which contains ethanol and concentrated sulphuric(V) acid - this was added dropwise) and, with glacial acetic acid and ethanol added slowly when preparing the wanted solution at 155 oC, then 165 oC to complete the distillation? 3. Why is it not recommanded to use calcium chloride (s) for drying alcohols? 4. What is the purpose of carrying once more distillation (distilling the dried ester distilled obtained from the above distillation*) after having the distillation mentioned above? *sodium carbonate and calcium chloride in water were added into distillate obtained from the 1st distillation, and then finally ethyl acetate was discarded out for the 2nd distillation, with temperature between 74 to 79 oC. 5. What happens if concentrated sulphuric acid is added dropwise to a mixture of ethanol and ethanoic acid in the 1st distillation ? 6. Why must concentrated sulphuric acid be diluted with alcohol before adding ethanol and ethanoic acid?
updated: 08 November 2004
