Question -
Determine CIP priorities for the following compound -
Options:
A .  −CH2CH2CH3 > −CH(CH3)2 > H > D
B .  −CH(CH3)2 > −CH2CH2CH3 > - D > - H
C .  −CH2CH2CH3 > −CH(CH3)2 > D > H
D .  D > H > −CH2CH2CH3 > −CH(CH3)2
Answer: Option B : B Let’s write it like this Here, you need to know 2 things: → The isotope with higher atomic mass is given higher priority. →If the first atoms are the same, go to the next set. Between C, C, H > C, H, H So,−CH(CH3)2 > −CH2CH2CH3 >- D > - H
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