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Chapter 5: Q5P (page 120)

Question:Is cocaine (Worked Example 5-2) dextrorotatory or levorotatory?

Short Answer

Expert verified

Answer

Cocaine is levorotatory.

Step by step solution

01

About cocaine

An organic drug that is made up of amine, ester, and carboxylic groups is cocaine.The molecular formula of this compound is C17H21NO4.

02

About dextrorotation and levorotation

Dextrorotation is the rotation of a chemical molecule towards the right side of the plane of polarized light and levorotation is the reverse of it.

03

About the rotation of cocaine

The structure of cocaine is given below:

Cocaine

The worked example 5-2 that is cocaine is levorotatory as this molecule rotates the plane polarised light towards left.

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Most popular questions from this chapter

Orient each of the following drawings so that the lowest-ranked group is toward the rear, and then assign R or S configuration:

a.

b.

c.

Assign R or S configurations to each chirality center in the followingmolecules:

Draw the meso form of each of the following molecules, and indicate the plane of symmetry in each:

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(b)

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Draw the structure of a meso compound that has five carbons and three chirality centers.

A 1.50 g sample of coniine, the toxic extract of poison hemlock, was dissolved in 10.0 mL of ethanol and placed in a sample cell with a 5.00 cm pathlength. The observed rotation at the sodium D line was 11.21°. Calculate [α]D for coniine.
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