[References] Shown below is one step in the synthesis of racemic trans-2-(1-propenyl)cyclohexanol from cyclohexane. From the list of reagents provided, choose the reagent(s) that will bring about this transformation. Reagents available a. Br2, light e. (CH3)3 CO K+ b. HBr f. RCO;H c. H2 SO4, H2O g. CH3 OH d. 1. H2 C=CH-CH,MgBr h. 1. CH3 CH=CHMgBr 2. HCI / H20 2. HCI / H2O No more than one step is necessary. Write the letter of the reagent(s) in the box provided, e.g., g) Your answer:
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.
![[References]
Shown below is one step in the synthesis of racemic trans-2-(1-propenyl)cyclohexanol from cyclohexane.
From the list of reagents provided, choose the reagent(s) that will bring about this transformation.
Reagents available
a. Br2, light
e. (CH3 )3 CO K+
b. HBr
f. RCO3H
c. H2 SO4, H2O
g. CH3OH
d. 1. H2 C=CH-CH2MgBr h. 1. CH3 CH=CHMgBr
2. HC1 / H2O
2. HC1 / H2 O
No more than one step is necessary. Write the letter of the reagent(s) in the box provided, e.g., g)
Your answer:](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F78d3386d-6d53-402c-988d-2c02b5589a57%2F60615e03-4da3-4a68-9e0e-5bea37c1abfe%2F1i1w3l_processed.jpeg&w=3840&q=75)
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