0243Pb20anp2-09

0243Pb20anp2-09 - H Br H H Br Bromide will now add to the...

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HBr (b) There are two products of the addition of HBr to 1,3-butadiene. What are they, and how are they formed (arrow formalisms, please)? X + Y Answers to Problem 20, Chemistry 0243 - 2009, p2 There are two possible protonations. By far the more favored ion is the following: (why?)
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Unformatted text preview: H Br H H Br Bromide will now add to the two carbons sharing the positive charge to give the following two products. H H Br Br You can draw the arrows, but WATCH OUT! Do not fall into the trap of thinking that those resonance forms have a separate existence. THEY DO NOT! and...
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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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