5019

Which of the following compounds are chiral and thus capable of existing in optically active forms? Identify the chiral center or centers. Draw structures.

(a) 4-bromo-1-chlorocyclohexene

(b) 1-chlorobutane

(c) E-1,2-butanediol

5021

Which of the following compounds are capable of being resolved and isolated in optically active form? Show structure.

(a) cis-3-methylcyclohexanol

(b) trans-1,4-dimethylcyclohexane

(c) 2-chlorobutane

(d) 1-bromo-3-methylbutane

5228

Which of the following compounds are chiral and thus capable of existing in optically active forms? Identify the chiral center or centers.

(a)

(b) 4-Bromo-1-chlorocyclohexene

(c) 1,3-Dimethylbenzene