Third Quiz Key - Chemistry 301 Quiz 3, Fall 2009 100 points...

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Quiz 3, Fall 2009 100 points (20 points toward final grade) Score _____________ Name _________________________________ Section _________ Time – 30 minutes (1) The 1 H NMR spectrum of the monoallyl product of the reaction between allyl bromide and tosylamide is shown on the next page. This spectrum shows distinct signals for a number of different types of hydrogen atoms (see structure on right). Label the spectrum to match hydrogen (b) – (g) with the appropriate peak, or groups of peaks, as shown on this spectrum for H(a) [30 points] (2) Briefly explain how you would distinguish the peaks for H(g) from the peaks for H(g’) on this NMR spectrum (10 pts) The coupling constant for the trans protons H(g’), H(f) (ca 16 Hz) is larger than the coupling constant for the cis protons H(g), H(f) (ca 10 Hz) (2) Briefly define the reactive intermediate “carbene” and show the structure for a representative carbene (10 pts). Formally neutral carbon that has only two substituents.
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This note was uploaded on 11/10/2010 for the course CHE Intermedia taught by Professor Dr.richard during the Spring '10 term at SUNY Buffalo.

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Third Quiz Key - Chemistry 301 Quiz 3, Fall 2009 100 points...

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