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8.2 Organic chemistry isomerism — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry8.2 Organic chemistry isomerism1 Mark
MCQ
How many optically active (Lactide) product $(s)$ are formed in given reaction ?

$\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_3} - CH - COOH\xrightarrow{\Delta }} 
\end{array}$

  • A
    $2$
  • B
    $4$
  • ✓
    $3$
  • D
    $1$
✓

Answer

Correct option: C.
$3$
c
When lactic acid heated, $\alpha $ cyclic diester derivatives are formed called lactides. So, it exists in total $3$ isomers.

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