Copyright 2000 Douglass F. Taber

Data Report Sheet

A. Ethyl Coumarin-3-Carboxylate

Weight of salicylaldehyde:

Moles of salicylaldehyde:

Weight of diethyl malonate:

Moles of diethyl malonate:

Limiting reagent:

# hours for the reaction:

Draw a sketch of each of the TLC plates you developed.






Melting point range (after drying) of step A product:

B. Coumarin-3-Carboxylic Acid

Weight of dried coumarin-3-carboxylic acid:

Moles of coumarin-3-carboxylic acid:

Percentage yield for 2-step sequence (A and B:

4. Melting point range:

C. Coumarin

Weight of dried coumarin:

Moles of coumarin:

Percentage yield for step 3 (C):

Percentage yield for the 3-step sequence:

Melting point range for crude coumarin:

Melting point of purified coumarin:

Literature melting point reported:



Comments: