Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or R/S. Provide a string of letters (e.g. abcd) as an answer with the highest priority listed first, lowest priority last. (a) (b) order: order: a)-CH3 a)-CH3 b)-CH₂OH b) -H c)-CH2NH2 c)-Br d) -CH₂Br d)-COOH
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.
![**Priority Order Determination for Stereochemistry**
Arrange the following groups in order of decreasing priority to determine E/Z or R/S configurations. Provide a string of letters (e.g., abcd) as an answer, starting with the highest priority listed first and the lowest priority last.
**(a) Groups:**
- a) -CH₃
- b) -CH₂OH
- c) -CH₂NH₂
- d) -CH₂Br
**Order:**
`__________`
**(b) Groups:**
- a) -CH₃
- b) -H
- c) -Br
- d) -COOH
**Order:**
`__________`](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F88ceee15-bfa7-4d57-a3b0-454bfc41debb%2F3c1fc5ab-bb68-406d-9c76-2977bc579732%2Fwqypu8p_processed.jpeg&w=3840&q=75)
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