Aborted
crsexp009scheme.jpg

Researcher

Cuepil Choi

Objective

To see if all of the 4-chlorobenzaldehyde could be converted to acetal. CRSEXP006 suggests ethylene glycol and 4-chlorobenzaldehyde may be successful in creating acetals through heating.

Procedure

0.4 g of 4-chlorobenaldehyde and 15 g of ethylene glycol were added to a small erlenmeyer flask. Flask was heated on a hot plate at settings varying from 100-150 C. Mixture was taken off hot plate after 15 minutes.

Results

Discussion

Conclusion

Mixture

Log

2013-07-18

13:25 mass of erlenmeyer flask 23.9169g
13:27 0.4209 g of 4-chlorobenzaldehyde added to flask
13:29 1.5285 g of ethylene glycol added to flask
13:35 temperature set to 150 C on hot plate, erlenmeyer flask put on hot plate.
13:40 hot plate lowered to 100 C
13:45 hot plate raised to 130 C, water vapor noticed at neck of the flask
13:49 mixture is cloudy, flask taken off of hot plate
14:08 top player filtered through kimtech-pipette filter, filtered layer added to inner NMR tube
14:16 flask set in ice bath
14:27 HNMR spectrum 1 taken of ethylene glycol and 4-chlorobenzaldehyde at 26.6 C with deuterated water in outer tube. deuterated water set to 4.8 ppm