For a linear alkane without a stereogenic center, the molecule is not chiral because free bond rotation cancels out the chiral conformations. Sometimes, those chiral conformations can be somewhat locked in. Take butane CH3CH2CH2CH3 which you have studied its conformation potential energy as a function of rotating the C2 and C3 bond in Newman projections, please (iv) draw the only stable conformations in that energy diagram analysis. (v) indicate which of those stable conformations is chiral and which achiral. 4. For an SN2 reaction, (i) Draw the reactants, transition state, and the product, using Nur to represent the nucleophile, RCHDBr to represent the electrophile. The chiral carbon of the reactant must be of "S" configuration. Indicate and label the numeric value of the important bond angle in the transition state. Draw the potential energy diagram of a SN2 reaction. Re Produut age 4 of 7