exam1 sp08

exam1 sp08 - CH223 Spring 2008 Name Exam 1 February 4 2008...

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1 CH223, Spring 2008 Name______________________ Exam 1 February, 4, 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) = octet, (m) = multiplet IR Absorptions Alcohol –O–H bonds 3200 – 3650 cm -1 (very broad) Carboxylic acid –O–H bonds 2400 – 3600 cm -1 (very, very broad) Saturated sp
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exam1 sp08 - CH223 Spring 2008 Name Exam 1 February 4 2008...

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