CHE 3331 Study Guide - Quiz Guide: Trigonal Planar Molecular Geometry, Racemic Mixture, Hydrohalogenation
Document Summary
E2 mechanisms: proton transfer, loss of lg. Rate = k[substrate][base] reagent = base who takes away a proton. More steric = more faster rxn the more bulky (steric), the faster the reaction. Regioselectivity of e2 picking a region for the double bond to occur typically: more substituted alkene is favored (zaitsev) If base & substrate are bulky (sterically hindered) less substituted alkene favored (hofmann) Stereoselectivity of e2 trans > cis (due to hammond postulate) Anti = opposite sides (staggered in newman p. ) Syn = same side (cover one another in newman p. ) Addition rxn = 2 things add across a double bond. Elimination > high temperature high brain cells = eliminating brain cells. Hydrohalogenation = adding hx across a double bond where x = f, cl, br, i [halogens: proton transfer, nuc attack. Therefore, 2 possible products should be expected. 2 enantiomers are produced in equal quantities attacked from either side (racemic mixture)
