Two reactants exchanging parts to form two new products
substitution reactions
Rearrangement reactions
Mechanisms by which Most Reactions Take Place:
Radical polar
Processes that involve symmetrical bond-breaking and bond-making
Radical reactions
Radical
Polar reactions
and reacts to complete electron octet of valence shell
Radical reactions
Steps required for Methyl Chlorination:
Initiation propagation,Termination
Initiation
Reaction with molecule to generate radical
Propagation
Combination of two radicals to form a stable product
termination
Tendency of atoms in a molecule to undergo polarization
Polarizability
larger atoms
easily polarize
smaller atoms
less polarize
Electron-rich species that donate electron pairs to electrophile in a polar bond-forming reaction
Nucleophile
substances that accept electron pairs from a nucleophile is a LEWIS ACID
electrophile
Polar reactions
Carbocation
Electrons move from a nucleophilic source to an electrophilic sink
Rules for Using Curved Arrows