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Unformatted text preview: 4-Methylcyclohexene Procedure Notes 4-Methylcyclohexene
1. Combine the reagents according to the procedure and add a Teflon boiling chip.
2. Immerse the receiving flask in an ice water bath and begin the distillation. Do NOT
omit the condenser as the new text suggests.
3. Adjust the transformer so that the product vapor does not exceed 100 C.
4. Continue distilling until no more liquid is collected.
5. Transfer the distillate to a 125 mL separatory funnel and add 2 mL of saturated
sodium chloride solution to aid in layer separation.
6. Drain the bottom layer and discard.
7. Dry the organic layer over anhydrous Na2SO4 for 10 minutes.
8. Immerse the receiving flask in ice and distill the organic layer, collecting only the
portion that boils over the range 100 - 105 C. Adjust heat to distill the product no
faster than one drop per second. Do NOT adjust the heat after the initial adjustment.
When the temperature changes dramatically, remove the heat and weigh your sample. No IR spectroscopy will be performed on the product. Unsaturation Tests
1. Clean and dry four test tubes. Put 4-5 drops of 4-methylcyclohexanol in the first two
and 4-5 drops of your 4-methylcyclohexene in the second two.
2. Add several drops of the bromine solution to one test tube in each group and record
3. Add several drops of the potassium permanganate solution (with 5-6 drops of 1,2
dimethoxyethane) to the second test tube in each group and record your observations.
4. See the background information in the textbook for the expected results. ...
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This note was uploaded on 07/10/2011 for the course BCH 4033 taught by Professor Stern during the Summer '11 term at UNF.
- Summer '11