Q.

Which of the following compounds will show retention in configuration on nucleophilic substitution by OH-ion?

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a

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b

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c

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d

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answer is A.

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Detailed Solution

  • In H3C-CHC2H5-CH2Br, attack of OH is not on chiral carbon.
  • It is adjacent to chiral carbon.
  • So, the configuration of chiral carbon remains constant.
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