Predict the final major organic product. 1. Hg(OAc)2, H20 2. NABH4 use only R-isomer 1. TSCI, pyr 2. NaBr (SN2) final product А. С. Br D. Br C. B.
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.
![Predict the final major organic product.
1. Hg(OAc)2, H2O
2. NaBH4
use only
R-isomer
1. TSCI, pyr
2. NaBr (SN2)
final
product
А.
С.
Br
В.
D.
Br](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F39c476d0-ebb8-4bfb-a8f5-ca32c078277d%2F9b0fbc33-d13d-4636-858d-971fb3ac2c7c%2Fnzadfzp_processed.jpeg&w=3840&q=75)
![What is the major product for the
following reaction?
Br2
?
H20
OH
Br
А.
+ En
С.
+ En
Br
OH
Но
Br
+ En
+ En
D.
Br
OH
A.
B.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F39c476d0-ebb8-4bfb-a8f5-ca32c078277d%2F9b0fbc33-d13d-4636-858d-971fb3ac2c7c%2Fcain1rn_processed.jpeg&w=3840&q=75)
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