5. Chirality

Convert the following Fischer projections to perspective formulas

(c)

(d)

For each set of examples, make a model of the first structure, and indicate the relationship of each of the other structures to the first structure. Examples of relationships: same compound, enantiomer, structural isomer.

(a)

Examine the Fischer projection below. How is this carbohydrate classified?
CHO at top, then $H-C-OH$, then $HO-C-H$, then $H-C-OH$, then $CH{2}_{O}H$ at bottom'>

Convert the following perspective formulas to Fischer projections.

(a)

(b)

Draw a Fischer projection for each compound. Remember that the cross represents an asymmetric carbon atom, and the carbon chain should be along the vertical, with the IUPAC numbering from top to bottom.

(e)

Convert the line-angle drawings into Fischer projections.

(b)

Are the following pairs identical, enantiomers, diastereomers, or constitutional isomers?

c.

d.

For each pair, give the relationship between the two compounds. Making models will be helpful.

(e)

(f)

Convert the following Fischer projections to perspective formulas.

(a)

(b)

Give the stereochemical relationships between each pair of structures. Examples are same compound, structural isomers, enantiomers, and diastereomers. Which pairs could you (theoretically) separate by distillation or recrystallization?

(a)

(b)

Draw Fischer projections of the following molecules.

(b)

For each structure,

1. draw all the stereoisomers.

2. label each structure as chiral or achiral.

3. give the relationships between the stereoisomers (enantiomers, diastereomers).

(a)

For each set of examples, make a model of the first structure, and indicate the relationship of each of the other structures to the first structure. Examples of relationships: same compound, enantiomer, structural isomer.

(c)

For each pair, give the relationship between the two compounds. Making models will be helpful.

(g)