Question

Part A Predict the product of the reaction of 1-butene with bromine. Enter the IUPAC name. Submit Hints My Answers Give Up Review Part Part B An alkyne undergoes hydrogenation to produce an alkene as follows: Pd RCECR H2 alkene catalyst Predict the product and draw it. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. To add an R group, select any atom while the Rectangle Selection tool is a and type R.

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Answer #1

PART A:

CH3CH2CHBrCH2Br, is the required product and its IUPAC name is 1,2-dibromobutane.

Part B:

Pd/C and H2 will reduce alkynes all the way to alkanes.Thus, two equivalents of H2 are added.( Contrast this to Lindlar’s catalyst which only adds one equivalent of H2 and reduces upto alkene only).

The product formed is R-CH2-CH2-R

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