CHE-2201 Lecture Notes - Lecture 8: Locant, Leaving Group, Pi Bond
Document Summary
Reaction at the beta carbon (versus an attack at the alpha carbon for substitution reactions) next to the location of the leaving group the double bond extends from the alpha carbon to the beta carbon. Main (cid:522)ingredients(cid:523) for an elimination are a base and an electrophile with a leaving group. Named using the same procedure we used previously with alkanes with minor modifications: Id the parent chain, which should include the c=c double bond. Assign a locant to each substituent - give the c=c bond the lowest number possible. The locant is one number not two if the double bond bridges. C2 and c3, the locant is at 2 (the lowest number) List the numbered substituents before the parent name in alphabetical order. The c=c double bond locant is placed either just before the parent name or just before the -ene suffix. Example: 2-heptene or hept-2-ene are both correct.
