Find the structure of Boc amino acids from the NMR spectrum in DMSO-d6.

 

Instructions

1. Select one exersise from the left table(click)

2. Analyse the spectrum and). Consider the chemical shifts, integrals(displayed on the top of each signal) and multiplicities. Be careful because the residual signals have not been removed from the spectrum and, thus, the integrals does not fit exactly the number of protons of each signal.

3. Analyse the molecular formula of the target molecule (second column of the table). Calculating the degree of unsaturation helps. 

3. Draw your proposed structure in the JSME Molecular Editor.

4. The correctness of the solutions is evaluated each time that the structure is changed. If the rigth strucuture is drawn, the row of the table is inmediately highlighted in green.

 

You should NOT draw the stereochemistry !