Chapter 9-11 (8-11-2019).pdf - Midterm II 2016 1 Write the chemical structures of the major products(denoted by 1A-1L of the following reactions Note

Chapter 9-11 (8-11-2019).pdf - Midterm II 2016 1 Write the...

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Midterm II, 2016 1. Write the chemical structures of the major products (denoted by 1A-1L) of the following reactions. Note: pay attention to reaction stereospecificity and draw the stereochemically correct structure of the product, if any . oxymercuration-demercuration reaction of alkenes AND alkynes: regioselectivity and tautomerization radical-based reduction of alkynes: trans-product, reaction stops at C=C, not alkanes heterogeneous catalyst: cis- reduction, both alkene and alkyne are reduced to alkanes it is fine to give just one enantiomer, but the cis- configuration has to be shown
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Midterm II, 2016 1. Write the chemical structures of the major products (denoted by 1A-1L) of the following reactions. Note: pay attention to reaction stereospecificity and draw the stereochemically correct structure of the product, if any . oxymercuration-demercuration reaction of alkenes AND alkynes: regioselectivity and tautomerization radical-based reduction of alkynes: trans-product, reaction stops at C=C, not alkanes wrong answer no stereochemistry specified, half marks
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Midterm II, 2016 Pay attention to stereochemistry : If there is no stereochemistry issue, you do NOT need to draw all the stereoisomers, e.g. 1A If there is stereochemistry issue, then you should specify in your answer: cis vs. trans , endo vs. exo , syn vs. anti , etc. either one is OK
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