Question 26.9: Assignment of Configurations of Alkenes Name each of the fol...
Assignment of Configurations of Alkenes
Name each of the following compounds, including the assignment of configuration.
(a) \begin{matrix} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \underset{|}CH_3 \\ \ \ \ \ \ \ \ \ \ \ Cl\ _{_\diagdown } \ \ \quad\quad\quad _{_\diagup }CHCH_3 \\C=C\\ ClCH_2\ ^{^\diagup }\quad \quad \ \ \ \ ^{^\diagdown }CH_2CH_3 \\ \\ \end{matrix} (b) \begin{matrix} \ \ \ FCH_2\ _{_\diagdown }\quad\quad\quad _{_\diagup }CH_2CH_3 \\C=C\\ \ \ \ \ CH_3CH\ ^{^\diagup }\quad \quad \ \ ^{^\diagdown }CH-CH_3 \\ \overset{|}CH_3 \ \ \ \ \ \ \ \ \ \ \ \quad \overset{|}Cl \ \ \ \ \\ \\ \end{matrix}
Analyze
To assign the configuration of the alkene, we must first assign the priorities to the substituents attached to each carbon in the double bond. Once this is done, we can assign the E or Z designation.
