2005Test3 - SC/CHEM 2020 6.0 Y05/06 Organic Chemistry...

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SC/CHEM 2020 6.0 Y05/06 Organic Chemistry – Mid-Winter Test Test 3 February 20, 2006 Family Name Given Name(s) PLEASE PRINT Time available: 1 hour Total Marks: 100 PLEASE PRINT Materials allowed: calculator & molecular model of one asymmetric centre . No cheat sheet. No extra paper. No dictionaries. Use ink pen (no pencils) and answer in the spaces provided. Tear away the last two pages. Use them for reference and use the blank sides for rough work. Use the reverse (blank) sides for rough work. Clearly cross out anything you do not want marked. Use the mark value of each question to allocate your time. Keep your eyes on your own paper at all times . Student Number Instructions: Lab Group (check one): 99 Monday Tuesday Wednesday Thursday Friday Draw a specific example (without generic R, X or Ar groups) of a chiral cyclic ether and indicate with one or more R/S descriptor(s) which enantiomer you have drawn. ( 4 marks ) 1. The broadband-decoupled 13 C-NMR spectra at right are of pyridazine and pyrimidine. With arrows, indicate w hic h spectrum belongs to which structure and give a specific reason for your choice. ( 8 marks ) 2. N
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2005Test3 - SC/CHEM 2020 6.0 Y05/06 Organic Chemistry...

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