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In the following reaction, how many molecules of BH3 are required to react with 6 molecules of 2-methyl-2-butene?

Which two resonance structures together describe the true structure of the mercurinium ion?

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Casey Durgan
Casey DurganLv2
13 Mar 2019

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Related questions

Please explain your answers. Thanks!


______________________________________________________

What is the major product obtained from the following reaction sequence?

____________________________________________________

Dimethyl sulfate is a very powerful methylating reagent because the methyl sulfate ion is a great leaving group. How many degenerate resonance forms can you write for the methyl sulfate ion?

I have the correct answers circled. I don't understand WHY they are correct. Can someone explain?

1a. Identify the electrophiles.

Hint: draw the structure of each compound

H2C=CH2

HBr

Br2

NaOH

BH3

1b. The difference between acid catalyzed hydration and BH3/H2O2, OH- of alkenes is:

no difference

one requires acid, the other requires base

one gives the Markovnikov addition product; the other gives the non-Markovnikov product

1c. Which addition reactions are regioselective?

hydrogenation and ozonolysis

hydration and hydrohalogenation

hydration and hydroboration

1d. To convert 2-methyl-2-butene to 2-methyl-2-butanol, I would use:

H2SO4

HBr

BH3/H2O2, OH-

NaOCH3

1e. Propylene reacts with Br2 to form a bromonium ion intermediate and Br-. If water is present, the ___ reacts at ___ to form a _____.

Br-/C-2/1,2-dibromopropane

water/C-1/2-bromopropanol

water/C-2/1-bromo-2-propanol

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