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JEE Main & Advanced Sample Paper JEE Main Sample Paper-20

  • question_answer
    \[HC\equiv CH\xrightarrow[{{H}_{2}}S{{O}_{4}}]{HgS{{O}_{4}}}(A)\xrightarrow[{{5}^{o}}C]{dil.\,O{{H}^{O-}}}(B)\] Give the IUPAC name of ?B? is

    A)  2-butanal           

    B)  3-hydroxybutanal

    C)  3-formyl-2-propanol  

    D)  4-oxo-2-propanol

    Correct Answer: B

    Solution :

     \[HC=CH\xrightarrow[{{H}_{2}}S{{O}_{4}}]{HgS{{O}_{4}}}C{{H}_{3}}-CHO\xrightarrow{aldol}\] \[C{{H}_{3}}-\underset{3}{\mathop{\overset{OH}{\mathop{\overset{|}{\mathop{CH}}\,}}\,}}\,-\underset{2}{\mathop{C{{H}_{2}}}}\,-\underset{1}{\mathop{CHO}}\,\](3-hydroxy butanal)


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