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Author Question: Which reagents are best to carry out the following reaction? 1.BH3/THF followed by NaOH/H2O2 ... (Read 47 times)

silviawilliams41

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on: Aug 23, 2018
Which reagents are best to carry out the following reaction?
 
  1.BH3/THF followed by NaOH/H2O2
  2.HgSO4/H2O/H2SO4
  3.NaNH2 followed by CH3I followed by HgSO4/H2O/H2SO4
  4.OsO4 followed by NaHSO3/H2O
  5.KMnO4/H+ followed by CH3I

Question 2

Which reaction sequence would be best to carry out the following transformation?
 
  1.HBr (1 equivalent) followed by Br2/CCl4
  2.HBr (2 equivalents) followed by Br2/hv
  3.Br2/CH2Cl2 (2 equivalents) followed by H2/Pd/C
  4.Br2/CH2Cl2 (2 equivalents) followed by NaOH
  5.Br2/H2O followed by HBr (2 equivalents)

Question 3

Which of the following is not a reason for alkyne hydrogens to be more acidic than alkene hydrogens?
  1.the lone pair on alkynyl anion has more s character
  2.the alkynyl anion is more stable
  3.the lone-pair electrons on alkynyl anion are closer to the nucleus
  4.hybridization differences make the vinyl anion less stable
  5.the alkynyl anion is resonance stabilized


emily12345

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Reply #1 on: Aug 23, 2018
Answer to Question 1

3

Answer to Question 2

1

Answer to Question 3

5


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