Pb84 - 0243-09

Pb84 - 0243-09 - signals 13 C NMR has five signals (a) (b)...

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Problem 84, Chemistry 0243 - 2009 Use the spectroscopic data to “fill in the box or boxes,” and to provide structures for the products. The answer may be “nothing is in the box.” The spectral data shown are not all the peaks in the spectra. They are useful ones, however, and do allow product assignments to be made. HBr/ HBr/ C 8 H 8 O C 8 H 8 O C 5 H 11 Br C 8 H 10 O C 8 H 10 O C 5 H 11 Br 13 C NMR has four
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Unformatted text preview: signals 13 C NMR has five signals (a) (b) (c) (d) 1. O 3 2. 1. O 3 2. IR: 1725 cm 1 IR: 1725, 3350 (broad) cm 1 (e) (f) 2. 1. 1 H NMR shows a quartet at ! 4.68 ppm 1 H NMR shows a triplet at ! 3.86 ppm (g) (h) 1 H NMR shows a singlet at ! 2.55 ppm 1 H NMR shows two signals at ! 9.72 (t), 3.66 (d) ppm 2. 1. 2. 1. IR: 1687 cm 1 IR: 1728 cm 1...
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This note was uploaded on 03/02/2010 for the course CHEM orgo taught by Professor Jones during the Fall '10 term at NYU.

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