7. The syn stereospecificity of the hydroboration is evidence against a carbocation intermediate. Imagine that the hydroboration shown below did start out with formation of a carbocation. Show how two diastereomeric products could be formed from the carbocation intermediate. Only one diastereomer forms in the actual hydroboration reaction, however. Provide its structure. DC=CH H BH3 THF Н D D H3C D H3C Two products BH Η ΘΗ

7. The syn stereospecificity of the hydroboration is evidence against a carbocation intermediate. Imagine that the hydroboration shown below did start out with formation of a carbocation. Show how two diastereomeric products could be formed from the carbocation intermediate. Only one diastereomer forms in the actual hydroboration reaction, however. Provide its structure. DC=CH H BH3 THF Н D D H3C D H3C Two products BH Η ΘΗ

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter9: Nucleophilic Substitution And Β-elimination

Section: Chapter Questions

Problem 9.45P: Draw a structural formula for the major organic product of each reaction and specify the most likely...

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