CHMB41H3 Lecture Notes - Lecture 6: Van Der Waals Strain, Pi Bond, Diastereomer
Document Summary
Addition of alkene w/ hbr: rst step is a slow addition of a proton (electrophile) to an alkene (nucleophile) A carbonation intermediate (an electrophile) is formed, which reacts w/ a br- ion to form an alkyl halide. The overall reaction is the addition of an electrophile to one of the sp2 carbons of the alkene and the addition of a nucleophile to the other sp2 carbon. The relatively loosely held pi electrons of the c=c are attracted to an electrophile. 6. 1 the addition of a hydrogen halide to an alkene. If the electrophilic reagent adds to an alkene is a hydrogen halide (hf, hcl, hbr, hi) The electrophile (h+) adds to either one of the sp2 carbons and the nucleophile (x-) adds to the other sp2 carbon. 6. 2 carboncation stability depends on the number of alkyl groups attached to the positively charged carbon. A primary carbocation has a positive charge on a primary carbon.
