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JEE Main levelSingle correct optionDifficulty 2 of 3co052

Ethanal is dissolved in excess methanol and dry gas is passed through the solution. The compound that is isolated is

  1. A1-methoxyethan-1-ol
  2. B2-methoxyethan-1-ol
  3. C1,1-dimethoxyethane
  4. Dmethoxyethane

Answer: C

Under acid catalysis the aldehyde first forms a hemiacetal, , which is unstable. With excess alcohol, the hemiacetal is converted to the acetal .
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