2,4-pentanedione is treated with excess of KCN in acetic acid solution and finally hydrolysed with dilute H 2 SO 4 giving products only with molecular formula C 7 H 12 O 6 (dicarboxylic acids). The correct statement regarding product(s) of this reaction is/are

Product of only one fraction obtained after crystallization, on strong heating lactonizes to give the following compound :

Product mixture contains four stereoisomers which on fractional crystallization gives two fraction.

Product of either fraction obtained after crystallization, on strong heating lactonizes to give the following compound :

MEDIUM

Earn 100

Explain the properties of Enantiomers?

Important Questions on Haloalkanes and Haloarenes

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The number of chiral carbons in chloramphenicol is ____________.

HARD

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

What is the

R

and

S

configuration for each stereogenic centre in this sugar from top to bottom?

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EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

Write R/S configurations of

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EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

Two possible stereo-structures of

C H_{3} C H O H \cdot C O O H

, which are optically active, are called:

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The absolute configurations of the following compounds Question Image respectively, are

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The configuration of the compound is

Question Image

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

In case of R, S configuration the group having highest priority is-

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

In assigning R-S configuration which among the following groups has highest priority?

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The configuration of the compound

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MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

Which of the following compounds is (S)-

4

-chloro-l-methylcyclohexene?

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The absolute configuration of

Question Image

is:

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The correct corresponding order of names of four aldoses with configuration given below respectively, is

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MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The R/S configuration of these compounds are respectively.

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EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

CH₃ - CHCl - CH₂ - CH₃ has a chiral center. Which one of the following represents its R-configuration?

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The configuration of the compound
Question Image

HARD

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

2,4-pentanedione is treated with excess of KCN in acetic acid solution and finally hydrolysed with dilute H₂SO₄ giving products only with molecular formula C₇H₁₂O₆ (dicarboxylic acids). The correct statement regarding product(s) of this reaction is/are

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Optical Isomerism

The pair given below are

Question Image