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Cyclohexene Lab Report

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After the assigned reaction was complete, samples of authentic cis-cyclohexene-1,2-diol, authentic trans-cyclohexene-1,2-diol, a 50:50 mix of the cis and trans cyclohexene-1,2-diols, and the product were each spotted on the Thin Layer Chromatography (TLC) plate. Then the TLC plate was placed inside a saturated beaker filled ethyl acetate in order to develop the plate. Once the solvent traveled up the solvent front, the plate was stained with anisaldehyde solution and then heated with a heat gun so the results could be visible. When looking at the results, the spot for the authentic cis-cyclohexene-1,2-diol turned a dark purple/light pink color, the spot for the authentic trans-cyclohexene-1,2-diol turned a light purple/blue color, the spot of the 50:50 mix of the cis and trans cyclohexene-1,2-diols turned a dark purple/light pink color, and the spot for the product turned a dark pink color. The color similarities between the product, the cis-cyclohexene-1,2-diol, and even the 50:50 mix of cis and trans diols indicated that the …show more content…

There are many convenient uses of TLC including monitoring the progress of a reaction, identifying a product by establishing that two compounds are the same, and determining the number of compounds in a mixture. In this experiment, TLC analysis helped determine whether the product matched any of the possible known products. One measure that TLC does not account for is the calculated percent yield. While TLC can help indicate a compound’s purity, it is not an absolute quantitative method. Only qualitative data is provided by TLC. For example, when a pure compound is spotted on the TLC plate and then developed, one spot should appear. If more than one spot appears in the same lane of the plate when spotted, this may indicate an impure compound. But many different compound show similar results on the TLC plate, so this tactic cannot be used entirely to determine

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