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 all possible products including stereosisomers (cis/trans) and 1,2- hydride or methyl shift from the following rxn
![The image depicts a chemical reaction involving a structural formula and a reaction condition. Here's the detailed transcription suitable for an educational website:
**Chemical Reaction Description**
**Reactant:**
- The chemical structure shown is 3,3-dimethyl-2-butanol, a secondary alcohol. The molecule includes:
- Two methyl groups (-CH₃) attached to the third carbon of a butane backbone.
- A hydroxyl group (-OH) attached to the second carbon.
- The remaining carbons complete the hydrocarbon chain.
**Reaction Condition:**
- The molecule is subjected to sulfuric acid (H₂SO₄) and heat. This is indicated by the arrow pointing right, labeled with "H₂SO₄/heat."
**Explanation of the Diagram:**
- The diagram suggests an elimination reaction (likely dehydration), where the alcohol (hydroxyl group) will react under acidic conditions with heat to form an alkene.
**Expected Product:**
- Under the given conditions (presence of H₂SO₄ and heat), the hydroxyl group is expected to be removed, and the most likely products are either 2,3-dimethyl-2-butene or 2,3-dimethyl-1-butene depending on the specific mechanism (E1 or E2) that occurs. The sulfuric acid acts as a catalyst for this conversion, facilitating the removal of the –OH group and the formation of a double bond between carbons.
This reaction underlines key concepts in organic chemistry such as elimination reactions, the role of acids in catalysis, and the stabilization of carbocation intermediates.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff5793d07-131a-4ebc-bd41-424eac2c1e40%2F9b3a73bc-e109-4081-893c-7a3437d8227f%2F595670j.png&w=3840&q=75)
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