1. The correct name of the compound on the right is- A) (R)-2-chloro-3-ethylpentane B) (S)-2-chloro-3-ethylpentane C) (R)-4-chloro-3-ethylpentane D) (S)-4-chloro-3-ethylpentane E) (R)-1-chloro-1-methyl-2-ethylbutane (ATOMIC NUMBERS are: H = 1, C = 6, CI = 17) 2. What is the correct order of the Cahn-Ingold-Prelog ranking of the following substituents as used in assigning R and S configurations of chiral centers? (higher ranking > lower ranking) (ATOMIC NUMBERS are: H = 1, C = 6, O = 8, Br = 35) -CH2OH -CHO (aldehyde group) A) -OCH3-CH2CH2Br > -CH2OH > -CHO C) -OCH3-CH2CH2Br > -CHO > -CH₂OH E) -OCH3> -CHO > -CH₂OH > -CH2CH2Br -OCH3 -CH2CH2Br B)-CH2CH2Br > -OCH3 > -CH2OH > -CHO D) -CH2CH2Br > -OCH3 > -CHO > -CH₂OH 10

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterNW2: Nomenclature Worksheet 2: Intro To Naming Functional Groups
Section: Chapter Questions
Problem 11CTQ: Instead of using the ending “ol,” an OH can be treated like a substituent or halogen using the...
Question
1. The correct name of the compound on the right is-
A) (R)-2-chloro-3-ethylpentane
B) (S)-2-chloro-3-ethylpentane
C) (R)-4-chloro-3-ethylpentane
D) (S)-4-chloro-3-ethylpentane
E) (R)-1-chloro-1-methyl-2-ethylbutane
(ATOMIC NUMBERS are: H = 1, C = 6, CI = 17)
2. What is the correct order of the Cahn-Ingold-Prelog ranking of the following
substituents as used in assigning R and S configurations of chiral centers?
(higher ranking > lower ranking) (ATOMIC NUMBERS are: H = 1, C = 6, O = 8, Br = 35)
-CH2OH
-CHO (aldehyde group)
A) -OCH3-CH2CH2Br > -CH2OH > -CHO
C) -OCH3-CH2CH2Br > -CHO > -CH₂OH
E) -OCH3> -CHO > -CH₂OH > -CH2CH2Br
-OCH3
-CH2CH2Br
B)-CH2CH2Br > -OCH3 > -CH2OH > -CHO
D) -CH2CH2Br > -OCH3 > -CHO > -CH₂OH
10
Transcribed Image Text:1. The correct name of the compound on the right is- A) (R)-2-chloro-3-ethylpentane B) (S)-2-chloro-3-ethylpentane C) (R)-4-chloro-3-ethylpentane D) (S)-4-chloro-3-ethylpentane E) (R)-1-chloro-1-methyl-2-ethylbutane (ATOMIC NUMBERS are: H = 1, C = 6, CI = 17) 2. What is the correct order of the Cahn-Ingold-Prelog ranking of the following substituents as used in assigning R and S configurations of chiral centers? (higher ranking > lower ranking) (ATOMIC NUMBERS are: H = 1, C = 6, O = 8, Br = 35) -CH2OH -CHO (aldehyde group) A) -OCH3-CH2CH2Br > -CH2OH > -CHO C) -OCH3-CH2CH2Br > -CHO > -CH₂OH E) -OCH3> -CHO > -CH₂OH > -CH2CH2Br -OCH3 -CH2CH2Br B)-CH2CH2Br > -OCH3 > -CH2OH > -CHO D) -CH2CH2Br > -OCH3 > -CHO > -CH₂OH 10
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