Class Notes (837,435)
Canada (510,273)
Chemistry (543)
CHEM 2OA3 (54)

Chapter 7 Substitution Reactions.docx

16 Pages
Unlock Document

Harald Stover

Chapter 7 Substitution ReactionsBernard HoNovember 27 201171 Introduction to Substitution ReactionsSubstitution reactions involve exchange of one functional group for anotherIn every substitution reaction there is an electrophile and a nucleophileElectrophiles in substitution reactions are often called substrates and must contain a leaving group which is a group capable of separating from the substrateLeaving group serves two critical functionsoWithdraws electron density via induction rendering adjacent carbon electrophilicoCan stabilize any negative charge that may develop as a result of leaving group separating from substrateHalogens are common leaving groups72 Alkly HalidesHalogenated organic compounds are commonly used as electrophiles in substitution reactionsNaming Halogenated Organic CompoundsoFour steps used to name alkanes same for halogensIdentify and name parentIdentify and name substituentsNumber parent chain and assign a locant to each substituentAssemble substituent alphabetically oHalogens are simply treated as substituents and receive the names fluoro chloro bromo iodooRemember that parent is longest chain and should be numbered so that first substituent receives lower numberoWhen a chirality center is present in compound configuration must be indicated at beginning of name oIUPAC also recognizes common names for many halogenated organic compoundsSystematic name treats a halogen as a substituent calling compound a haloalkaneCommon name treats compound as an alkyl substituent connected to a halide and compound is called an alkly halide or an organohalideStructure of Alkyl HalidesoEach carbon atom is described in terms of its proximity to halogen oAlpha position is carbon atom connected directly to halogen while beta positions are carbon atoms connected to alpha position oAn alkyl halide will have only oneposition but there can be as many as threepositionsoAlkyl halides are classified as primary secondary or tertiary based on number of alkly groups connected toposition
More Less

Related notes for CHEM 2OA3

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.