(a)
Interpretation: The structure of the substituent (methyl, bromomethyl, trichloromethyl and ethyl)needs to be determined and they need to be arranged in descending priority order.
Concept Introduction: The priority number of groups is decided by the
(b)
Interpretation:The structures of the substituents 2-methyl-propyl (isobutyl), 1-methylethyl (isopropyl), cyclohexyl)need to be drawn and they need to be arranged in descending priority order.
Concept Introduction: The priority number of groups is decided by the atomic number. Highest atomic number group gets the highest priority number. Hydrogen atom gets the lowest priority number.
(c)
Interpretation: The structures of the substituents butyl, 1-methylpropyl (sec-butyl), 2-methylpropyl (isobutyl), 1,1-dimethylethyl (tert-butyl) needs to be drawn and they should be arranged descending priority order.
Concept Introduction:The priority number of groups is decided by the atomic number. Highest atomic number group gets the highest priority number. Hydrogen atom gets the lowest priority number.
(d)
Interpretation: The structures of the substituents ethyl, 1-chloroethyl, 1-bromoethyl, 2-bromoethyl needs to be drawn and they should be arranged in descending priority order.
Concept Introduction:The highest atomic number group has the highest priority and lowest atomic number gets the lowest priority number. Hydrogen atom gets the lowest priority.
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Organic Chemistry: Structure and Function
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