higher priority according to the cahn ingold orelog siquence rule ch2cl,ch3,cho,ch2oh
Question
Higher priority according to the Cahn-Ingold-Prelog sequence rule:
- CH₂Cl
- CH₃
- CHO
- CH₂OH
Solution
The Cahn-Ingold-Prelog (CIP) sequence rules are used to assign priority to the groups attached to a chiral center in a molecule. The priority is determined based on atomic number, with higher atomic numbers receiving higher priority.
Here's how you would assign priority to the groups you mentioned:
-
CH2Cl: The atomic number of Chlorine (Cl) is 17.
-
CH3: The atomic number of Hydrogen (H) is 1.
-
CHO: The atomic number of Oxygen (O) is 8.
-
CH2OH: The atomic number of Oxygen (O) is 8.
According to the CIP rules, the group with the highest atomic number attached to the carbon atom gets the highest priority. Therefore, the priority order would be:
CH2Cl > CHO = CH2OH > CH3
Note: For CHO and CH2OH, the next atom after carbon and oxygen would be used to break the tie. In CHO, it's hydrogen (H) with atomic number 1, and in CH2OH, it's also hydrogen (H). Therefore, they have the same priority.
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