NMR Aa7 If you can, please provide the answer in this sheet. Otherwise, do draw the structure and schematic analysis carefully and clearly, in a plain sheet. DONT USE PENCIL Aal: The full spectrum of an unknown compound is displayed in bottom. The spectrum is also blown up to afford the dose-up of peaks. There are numerical values in red beneath some of peak sets. They are proton integration number. With the detailed spectral information and the molecular structures provided. (1) determine structure of the unknown compound, (2) determine the proton-proton coupling and account for use stick diagram) splitting of each set of peaks (This step serves for the verification purpose 7.057.00 6.95 .90 5 8.50 6.75 8.70 осненон оснен ви OCH CHOKO

Aa2: Both NMR and MS of an unknown compound are provided. The NMR spectrum is also blown up to afford the close-up of peaks. With the detailed spectral information provided, determine structure of the unknown compound. Also assign protons and proton-proton coupling scheme. In addition, propose the cleavage pathway for peaks with intensity of 20 or above. Your proposed structure, if it is correct should fit well with the proton assignment and leavage pathways otrip 30 140 100 m 120 /z

Aa3. The full spectrum is displayed in bottom. The spectrum is also blown up to afford the close-up of peaks. There are numerical values in red beneath some of peak sets. They are proton integration number. With the detailed spectral information and the molecular structure provided, give proton assignment and determine the proton-proton coupling and account for use stick diagram) splitting of each set of peaks. осн. H,CECHCH OCH 6.0 6.5 6.0 4.5 4.0 3.5 3.0 25 2.0 1.5 1.0 0.5 00