Under the specified conditions, substrate $X$ undergoes substitution and elimination reactions to give products $A - D$ . $A$ and $B$ are stereoisomers, but not enantiomers. $C$ and $D$ are enantiomers. A is not an isomer of $C$ . Which of the following could be the material $X$ ?
$X H_{2} O - - \to Δ A + B + C + D$

(I)

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(II)

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(III)

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(IV)

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Solution

The correct option is A (I)
Refer to image 01
A pair of enantiomers are formed elimination gives
Refer to image 02
Since (I) is giving four products including enantiomers and diastereomers the materials X can be (I)

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Similar questions

A schematic analysis of the reaction of one enantiomer with racemic mixture is shown below

\begin{matrix} d & + & d a n d l & \to & (d) - (d) T h e (+) f o r m o f & A r a c e m i c m i x t u r e o f & + c h i r a l m o l e c u l e s & o t h e r m o l e c u l e s w i t h & (d) - (l) 50 % (d) a n d 50 % (l) \end{matrix}

The products (d-d) and (d-l) are clearly neither identical nor enantiomers (non-superimposable mirror images) as the mirror image of (d-d) is (l-l) not (d-l). They are diastereomers, 'stereoisomers that are not mirror images'.

The formation of diastereomers allows the separation of enantiomers (called resolution) which is not easy as enantiomers have identical physical properties. One general procedure for separating enantiomers is to allow them to react with naturally occurring chiral molecule to form a pair of diastereomers. These can be separated easily as they have different physical properties. if the original chemical reaction can be reversed, the enantiomers can be isolated.

Which of the following is an example of diastereomers?

Q. An organic compound

A (C_{5} H_{10} O_{2})

reacts with

B r_{2}

in presence of phosphorus to produce

B

which can be resolved into enantiomers.

B

on dehydrobromination yields

C (C_{5} H_{8} O_{2})

which does not show stereoisomerism.

C

on decarboxylation gives an alkene which on further ozonolysis gives

D

and

E

D

gives Schiff's test but

E

does not. The correct identity of these compounds are:

A pair of stereoisomers might be classified in various ways. Which of the following statement are true with respect to pairs of stereoisomers?
(a) They might be configurational isomers
(b) They might be diastereomers
(c) They might be constitutional isomers
(d) They might be tautomers
(e) They might be conformational isomers
(f) They might be enantiomers
(g) They might be positional isomers

Q. A hydrocarbon with molecular formula