CRSEXP043

Scheme


acetic anhydride in RA Cyclohexanol in RA Cyclohexyl acetate in RA

Researcher
Kayla Gogarty [|Reaction Attempts]

Objective
The purpose of this experiment is to determine the results of a reaction of Acetic Anhydride and Cyclohexanol, using HNMR to analyze the results.

Results
Time: 15 minutes [|CRSEXP043A-NMR1] pure acetic anhydride [|CRSEXP043B-NMR1] pure cyclohexanol [|CRSEXP043C-NMR1] half by volume acetic anhydride and half by volume cyclohexanol [|CRSEXP043D-NMR1] one drop acetic anhydride in excess cyclohexanol [|CRSEXP043E-NMR1] one drop cyclohexanol in excess acetic anhydride

Time: 24 hours [|CRSEXP043A-NMR2] pure acetic anhydride [|CRSEXP043B-NMR2] pure cyclohexanol [|CRSEXP043C-NMR2] half by volume acetic anhydride and half by volume cyclohexanol [|CRSEXP043D-NMR2] one drop acetic anhydride in excess cyclohexanol [|CRSEXP043E-NMR2] one drop cyclohexanol in excess acetic anhydride

Discussion
Based on the HNMR spectra, the peaks for the product are bigger after 24 hours than after 15 minutes. Therefore, the reaction was not complete after 15 minutes and the reaction occurs slowly without a catalyst. Based on literature searches, this reaction is performed often with various organic and inorganic catalysts. performed the reaction without a catalyst and under solvent-free condition. However, the researchers used a microwave to induce a rapid reaction. Under these conditions, the reaction occurred 6 minutes after mixing the reagents and there was an 84% yield. Therefore, the presence of microwaves causes the reaction to occur more rapidly. Even though the reaction performed slowly without a catalyst and without microwaves, the reaction still occurred within twenty-four hours.

Log
14:00- Prepared five mixtures CRSEXP043A- pure acetic anhydride CRSEXP043B- pure cyclohexanol CRSEXP043C- Half by volume acetic anhydride and half by volume cyclohexanol CRSEXP043D- one drop acetic anhydride in excess cyclohexanol CRSEXP043E- one drop cyclohexanol in excess acetic anhydride 14:15- HNMR of the five mixtures were taken 16 scans, 1second relaxation delay, 45 degree pulse angle, CDCl3 as solvent
 * 14-04-02**

14:00- HNMR of the five mixtures were taken 16 scans, 1second relaxation delay, 45 degree pulse angle, CDCl3 as solvent
 * 14-04-03**