Subjective Type

Differentiate between retention and inversion.

Solution

If the relative configuration of the atoms/ groups a chiral centere in an optically active molecule remains the smae before and after the reaction, the reaction is said to proceeed with retention of configuration. On the other hand, if the relative configuration of the atoms/ groups around a stereocentre in the product is opposite to that in the reactant, the reaction is said to proceed with inversion of configuration.

SIMILAR QUESTIONS

Haloalkanes and Haloarenes

A partially racemised (+)-$$2$$-bromo-octane ($$2^o $$RX) on reaction with aq. $$NaOH$$ in acetone gives an alcohol with $$80$$% inversion and $$20$$% racemisation. What is the percentage of back-side attack?

Haloalkanes and Haloarenes

A partially racemised $$(+)-$$$$2$$$$-bromo-octane$$ ($$2^o\: RX$$) on reaction with aq. $$NaOH$$ in acetone gives an alcohol with $$80$$% inversion and $$20$$% racemisation. What is the percentage of front-side attack?

Haloalkanes and Haloarenes

Give the stereochemical products of the following:

Haloalkanes and Haloarenes

Which of the following molecules have non-zero dipole moments ? (I) gauche conformation of $$ 1-2-$$ dibromethane (II) anti conformation of $$ 1, 2 $$dibromoethane (III) trans $$ -1,4- dibromocyclohexane $$ (IV) cis $$ -1, 4-$$ dibromocyclohexane (V) tetrabromomethane (VI) $$ 1, 1- $$ dibromocyclohexane

Haloalkanes and Haloarenes

The configuration of the carbon atom $$ C_2$$ and $$ C_3$$ in the following compound are, respectively:

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