Key-Mid-1-140B-winter2006.

Key-Mid-1-140B-winter2006. - Student Name Problem 1 Propose...

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Unformatted text preview: Student Name: Problem 1: Propose a reasonable structure for the compounds A and B on the basis of the given molecular fcnnulas and the 1H NTVIR epectras. Assign the signals to specific hydrogcns for both melecules. - A: CeflfiflrNfl; B: Cgflqflr '-. Tr Student Name: Problem 2 a) How man}r signals would you expoct to son in the 1H NIHIR and ”C NMR spoou‘as for each of the following compounds. nag/Wm U 5 3. fl.“ .2? "'r 1H NMR 3 . LT 13:: NMR L4 “:7 ’1' . 3 lo} Comploto the following reactions: 2} 8 H-l-I GHgoH EtCI'IEtDH Studont Namo: Problem 3 Provide synthetic strategies for the following transformations. Show s]1_intennediates and reagents needed for both reactions. A) EN Lb LI“ N 1;: E] , ""x ‘ ...
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