Question

                                                         CH₃

                                                         │        

2. a. Give the IUPAC name for CH₃-C-CH₂-CH₂-CH₃  

                                                          │                                                                                   

                                               OH

    

      b. Classify the above alcohol as 1°, 2° or 3°.

      c. Name the product from the oxidation of the above alcohol.

Answer 1

CH3-C(CH3)(OH)-CH2-CH2-CH3   [substituents are written in brackets)

According to the rules of IUPAC nomenclature, select the longest possible chain and number it so as to give the lowest possible number to the functional group -OH].

¹CH3-²C-³CH2-⁴CH2-⁵CH3        [parent chain numbered and -OH at position 2 from left]

So ,the name is 2-methyl-2-pentanol or 2-methylpentan-2-ol

b) It is a tertiary or 3 degree alcohol RCR'R''-OH type with C surrounded by three alkyl groups

c) Oxidation gives carbonyl compound with -C-OH getting reduced to -C=O

CH3-CO(CH3)-CH2-CH2-CH3