Draw a structural formula for a hydrocarbon with the given molecular formula that undergoes hydroboration-oxidation to give the indicated product. (a) (b) • All hydrogen atoms are implied. • Apply formal charges where appropriate. • Omit lone pairs and radical electrons from your answer. CH10 C₂H12 3 1. (sia) BH 2. H₂O₂, NaOH 09.05 1. BH₂ 2. H₂O₂, NaOH 8 H √ [F ChemDoodle LOH * 24 √ [F
Reactive Intermediates
In chemistry, reactive intermediates are termed as short-lived, highly reactive atoms with high energy. They rapidly transform into stable particles during a chemical reaction. In specific cases, by means of matrix isolation and at low-temperature reactive intermediates can be isolated.
Hydride Shift
A hydride shift is a rearrangement of a hydrogen atom in a carbocation that occurs to make the molecule more stable. In organic chemistry, rearrangement of the carbocation is very easily seen. This rearrangement can be because of the movement of a carbocation to attain stability in the compound. Such structural reorganization movement is called a shift within molecules. After the shifting of carbocation over the different carbon then they form structural isomers of the previous existing molecule.
Vinylic Carbocation
A carbocation where the positive charge is on the alkene carbon is known as the vinyl carbocation or vinyl cation. The empirical formula for vinyl cation is C2H3+. In the vinyl carbocation, the positive charge is on the carbon atom with the double bond therefore it is sp hybridized. It is known to be a part of various reactions, for example, electrophilic addition of alkynes and solvolysis as well. It plays the role of a reactive intermediate in these reactions.
Cycloheptatrienyl Cation
It is an aromatic carbocation having a general formula, [C7 H7]+. It is also known as the aromatic tropylium ion. Its name is derived from the molecule tropine, which is a seven membered carbon atom ring. Cycloheptatriene or tropylidene was first synthesized from tropine.
Stability of Vinyl Carbocation
Carbocations are positively charged carbon atoms. It is also known as a carbonium ion.
![Draw a structural formula for a hydrocarbon with the given molecular formula that undergoes hydroboration-oxidation to give the indicated product.
(a)
(b)
• All hydrogen atoms are implied.
Apply formal charges where appropriate.
• Omit lone pairs and radical electrons from your answer.
●
1. (sia) ₂BH
C₂H10 2. H₂O₂, NaOH
C₂H12
/
VI
/
-85
1. BH3
2. H₂O₂, NaOH
8
Η
-
n [ ]#
OH
?
ChemDoodleⓇ
Ⓡ
000- [F
?
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