marmomete Electrically heated sand bath . A. Benzopinacolone Charye a snull pear

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marmomete Electrically heated sand bath . A. Benzopinacolone Charye a snull pear-shaped flask with 200 mg (0.546 mmol) of benzopinacol." 1 ml of glaciul acetie ucid, und a tiny crystal (about 5 mg) of iodine. Attach a condenser and heat to re lux using a sand-bath (Figure E 36. 1) for abo!: 5 min. Allow the solu- tion to cool. Benzopinacolone separates from solution. Add a little ethanol, mix thor- oughly. and isolate the product by suction filtration on a small Hirsch funnel. Ise additional ethanol to rinse the flask and to remove any iodine color from the product. Suck the benzopinacolone dry for a few minutes, weight it, and determine the yield and mp. The reported mp is 182-184°C. The yield should exceed 70%. EXER C.ISES 4. Because benzopinacol und benzopinacolonc have nearly identical melting points. describe (without using spectroscopic methods) how you might prove that samples of the two compounds are different. 5. (Optional; Spectroscopic) Destribe any impurtant differences between benzopinacol and benzopinacolone in the IR Experiment 36 Carbocation Rearrangements-B

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marmomete Electrically heated sand bath . A. Benzopinacolone Charye a snull pear

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