Draw the major product(s) from addition of HBr to the alkene below. • You do not have to consider stereochemistry. If there is more than one major product possible, draw all of them. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate multiple products using the + sign from the drop-down menu.
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.
![**Exercise: Addition of HBr to an Alkene**
**Objective:** Draw the major product(s) from the addition of HBr to the alkene below.
**Structure:** A heptene molecule with a double bond at the first position (partial structure representing cycloheptene and an additional carbon atom).
**Instructions:**
- You do not have to consider stereochemistry.
- If there is more than one major product possible, draw all of them.
- Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner.
- Separate multiple products using the "+" sign from the drop-down menu.
**ChemDoodle Sketcher Interface:**
- The interface includes tools for drawing chemical structures such as:
- Line, atom, ring, and bond tools.
- Copy, save, and paste functionality.
- Options to add or separate multiple structures.
**Note:** Use the provided sketcher to create and analyze the chemical structures as required.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1979f846-1c48-472c-b58a-629393eabf2a%2F8404c09e-8ce6-4644-9707-b8b5aa9f1661%2F5k2or1a_processed.png&w=3840&q=75)
![**Title: Naming Alkenes with E/Z Designators**
**Instruction:**
Name the alkene below.
**Use ONLY E/Z designators to indicate stereochemistry.**
**Chemical Structure:**
- H₂C=C=CHCH₃
**Input Box:**
[Blank text box for the answer]
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