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Unformatted text preview: 1 CH223, Spring 2009 Name_______ KEY _______________ Exam 1 February 2, 2008 Read the test over carefully. The questions are in no particular order (i.e., they do not progress from easy to hard, nor are they in chronological order). If you are unsure of an answer, move on and then come back to it. Sometimes answering one question will help you in answering another. You may use the periodic table displayed on the wall of the classroom. Best of luck to all. 1 H NMR Chemical Shifts Saturated alkane protons 0.2 2.0 ppm CHCl 3 7.3 ppm Protons next to a carbonyl 2.0 2.5 ppm CHCl 2 5.3 ppm Alkyne protons 1.8 2.9 ppm CH 2 Cl 3.1 ppm Benzylic protons 2.3 2.8 ppm Protons next to an alcohol or ether oxygen 4.5 6.5 ppm Alkene (double bonds) protons 4.5 7.0 ppm Aromatic protons 6.5 8.5 ppm Aldehyde proton 9.0 10.5 ppm Alcohol protons (typically does not show coupling) 0.5 8.0 ppm Carboxylic acid 10 14 ppm (s) = singlet, (d) = doublet, (t) = triplet, (q) = quartet, (quin) = quintet, (sex) = sextet, (sep) = septet, (oct) =...
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This note was uploaded on 09/25/2009 for the course CH 223 taught by Professor Brown during the Summer '08 term at N.C. State.
- Summer '08