Questions from Organic Chemistry

Q: The specific rotation of ephedrine in ethanol (at 20°C

The specific rotation of ephedrine in ethanol (at 20°C) is −6.3. A chemist prepared a mixture of ephedrine and its enantiomer, and this mixture had a specific rotation of −6.0. Calculate the % ee of t...

Q: A common method for confirming the proposed structure and stereochemistry of a

A common method for confirming the proposed structure and stereochemistry of a natural product is to synthesize the proposed structure and then compare its properties with those of the natural product...

Q: An unknown compound with the molecular formula C6H13Cl is treated with sodium

An unknown compound with the molecular formula C6H13Cl is treated with sodium ethoxide to produce 2,3-dimethyl-2-butene as the major product. Identify the structure of the unknown compound.

Q: The specific rotation of vitamin B7 in water (at 22°

The specific rotation of vitamin B7 in water (at 22°C) is +92. A chemist prepared a mixture of vitamin B7 and its enantiomer, and this mixture had a specific rotation of +85. Calculate the % ee of thi...

Q: Synthetic chemists often employ enzymes to conduct asymmetric syntheses that favor the

Synthetic chemists often employ enzymes to conduct asymmetric syntheses that favor the production of one enantiomer over another. Baker’s yeast was used to convert the diketone shown...

Q: Identify whether each of the following pairs of compounds are enantiomers or

Identify whether each of the following pairs of compounds are enantiomers or diastereomers:

Q: In the field of chemical research, one area of interest is

In the field of chemical research, one area of interest is the study of how variations in structure, including stereochemical variations, affect the biological activity of natural products. (â&#...

Q: For each of the following objects determine whether or not it possesses

For each of the following objects determine whether or not it possesses a plane of symmetry:

Q: In the previous problem, one object has three planes of symmetry

In the previous problem, one object has three planes of symmetry. Identify that object.

Q: Each of the following molecules has one plane of symmetry. Find

Each of the following molecules has one plane of symmetry. Find the plane of symmetry in each case: (Hint: A plane of symmetry can slice atoms in half.)