Contributors certain types of reactions that are likely to occur with alkyl halides in describing these it is useful to designate the halogen bearing carbon as alpha and the carbon atoms adjacent to it as beta as noted in the first four equations shown belowreplacement or substitution of the halogen on the carbon colored maroon by a nucleophilic reagent is a commonly observed . Organic chemistry review substitution and elimination reactions of alkyl halides quick review notes book 1 author i 1 2 i 1 2 yvonne neudorf subject i 1 2 i 1 2 organic chemistry review substitution and elimination reactions of alkyl halides quick review notes book 1 keywords. Alkyl halides can be readily synthesized from alkanes alkenes and alcohols this section expands the ways we can brominate tetrahedral carbons to the allylic position of alkenes 74 reactions of alkyl halides substitution and elimination the two major reaction pathways for alkyl halides substitution and elimination are introduced. Organic chemistry review substitution and elimination reactions of alkyl halides quick review notes book 1 kindle edition by s smith author format kindle edition see all formats and editions hide other formats and editions price new from used from kindle april 22 2011 please retry . 1 chapter 9 covers reactions of alkyl halides most of these break down into two categories substitution and elimination substitution results in replacing the halogen with some other group elimination results in removing the halogen along with a hydrogen on a neighboring atom to create a new double bond