A chiral compound with an ‘X’ group attached to the stereocenter has been replaced by a ‘Y’ group. The product obtained rotates the plane of polarised light in the direction opposite to that of the original compound. Name the process that has taken place.(a) Inversion(b) Retention(c) Racemisation(d) Inversion or retentionThis question was posed to me in an international level competition.Origin of the question is Haloalkanes & Haloarenes in division Haloalkanes and Haloarenes of Chemistry – Class 12

A chiral compound with an ‘X’ group attached to the stereocenter h

1.	A chiral compound with an ‘X’ group attached to the stereocenter has been replaced by a ‘Y’ group. The product obtained rotates the plane of polarised light in the direction opposite to that of the original compound. Name the process that has taken place.(a) Inversion(b) Retention(c) Racemisation(d) Inversion or retentionThis question was posed to me in an international level competition.Origin of the question is Haloalkanes & Haloarenes in division Haloalkanes and Haloarenes of Chemistry – Class 12
Answer» The correct option is (d) Inversion or retention Explanation: Since the PRODUCT ROTATES the PLANE of polarised LIGHT in some direction, it cannot be racemic. The product formed is a completely new compound from the original one and may have different or same OPTICAL behaviour as compared to the original compound.

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