ORGCHEM Flashcards
TYPES OF STRUCTULAR FORMULA
Expanded/Lewis/Kekule/Line-bond
Condensed
Skeletal
CONDITIONS FOR BONDING
- Two electrons are needed to make a bond b/w 2 atoms
- Each atoms must have unpaired orbital
HEADWAYS OVERLAP
Sigma
How many bonds does sp3 hybridization form and what angle?
FOUR SIGMA BONDS
109.5 tetrahedral
3D
FACTORS THAT AFFECT IMF
- Dipoles (incr. polarity)
- Water solubility
- Contact area/surface area
- Bp, melting pt.,density
ORGANIC RXNS
- Synthesis / addition
- Decomposition / elimination
- Double displacement / substitution
- Rearrangement - interchange of ions
TWO TYPES OF CLEAVAGE
Homolytic
Heterolytic
Also known as paraffins therefore SATURATED
Alkanes
STEPS IN FREE RADICAL SUBSTITUTION
- Initiation
- Propagation
- Termination
Also known as olefins therefore UNSATURATED
Alkenes
Requires org solvent like CCl4 or DCM
HALOGENATION
Requires catalyst like Pd or PtO2
HYDROGENATION
Usually done w/ ether solvent
HYDROHALOGENATION
Always ACID-CATALYZED; using HgOAc/NaBH4
HYDRATION
Rule in adding HX to an asymmetric alkene, the major product has the H added to the less stable vinyl carbon
MARKONIKOV’S RULE
HALOHYDRIN
Halogen + H2O
KMnO4 and BASE
MILD OXIDATION
Usually followed by HYDRATION; RCOOOR, RCOOH
EPOXIDATION
Also known as acetylenes
Alkynes
Disturbance or deviation from the ideal bond angles
STRAINS
Strain/instability when 2 grps are so close to one another
STERIC STRAIN/HINDRANCE
Where some e- are not just in a single place; continous moving
DELOCALIZATIONS
Action done by the overall push or pull of e-
INDUCTIVE EFFECT