Which of the following alkenes do not show cis-trans isomerization? I) 2-methyl-2-hexene II) 1-chloro-1-butene III) 1-methylcyclohexene IV) 2-methyl-3-hexene A. I, II B. II, II O C. II, IV D. I, II
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.
NOMENCLATURE, ANALYSIS & REACTIONS
![Which of the following alkenes do not show cis-trans isomerization?
I) 2-methyl-2-hexene
II) 1-chloro-1-butene
III) 1-methylcyclohexene
IV) 2-methyl-3-hexene
O A. I,I
O B. II, II
C. II, IV
D. I, III
What is the IUPAC name of the following compound?
СООН
НО
O A. 2-Carboxyspiro[3.4]oct-7-ene-6-ol
O B. 3-Hydroxyspiro[3.4]oct-1-ene-6-carboxylic acid
O c. 6-Carboxyspiro[3.4]oct-2-ene-1-ol
O D. 1-Hydroxyspiro[3.4]oct-2-ene-6-carboxylic acid](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa3a907d6-335f-4778-8a0c-156246288e65%2Ffeba51f0-d675-4d55-9106-51111fd8525c%2Ffetho1l_processed.png&w=3840&q=75)
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