[1] For each given reaction, draw the product(s) of nucleophilic substitution and a complete mechanism (SN1 or SN2). Include possible rearrangement and circle the major product. + CH3OH + -SH + CH,OH b. с. Br CH CH +CH2OH SN H-Shift H-Shift SN -Br + CH,OH SN, CH,OH -> El
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.
![[1] For each given reaction, draw the product(s) of nucleophilic substitution and a complete
mechanism (SN1 or SN2). Include possible rearrangement and circle the major product.
Br
+ CH3OH
-SH
a,
CH,OH
b.
с.
Br
CH CH
CHCH
+ CH3OH
SN
H-Shift
CH3
OBr
H-Shift
OCH2
(same)
(SN)
SH
-Br
+ CH,OH
+ CHÖH
->
-oCH.
SN,
CHOH
El](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F17dfd806-082f-4257-81d0-f087a7f9603f%2F27f0a855-48f6-4535-9025-0b73929c49af%2Fbsetnrs_processed.jpeg&w=3840&q=75)
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