NMRpractice-十个典型的HNMR图谱1.ppt

1H NMR Practice Problems Dr. Peter Norris, Youngstown State University, Department of Chemistry The following exercises are to help you become familiar with predicting the proton NMR spectra of simple organic molecules. For each example you should find the number of signals you expect, where they should show on the scale (chemical shift), and what shape they should be (splitting patterns). Use the spectroscopy sheet to become familiar with types of protons and where they show on the spectra. Click on a link below and the compound will appear, then each subsequent mouse click will give the? number of signals, the spectrum, and the signal assignments. So far I can only get this to work in Internet Explorer and clicking on the links below should open up a PowerPoint slide in your browser. Once you have finished the example, click the back button in the browser to come back to this page. * CH2CH3 CH3CO CH2CH3 1 CH(CH3)2 CH3CO CH (CH3)2 2 CH2CH3 (CH3)2CH CH (CH3)2 CH2CH3 3 4 CH3CH CH2CH2 CHCH2 OCH3 CH2Cl C(CH3)3 (CH3)2C= H-C= Ar-H Ar-H 5 CH2CH3 CH2CH3 NCH3 NH Ar-H, Ar-H, Ar-H OCH3 6 CH3CH2 CH3CH2 CH3C= CH2CH2 H-C=C Ar-H, Ar-H, Ar-H 7 *