WS39, CHEM 211, Dr. Poutsma
Organic Synthesis, Cont.
Model 1: Synthetic Traps, Cont.
Another common synthetic trap is getting elimination when you were trying to do substitution or
Can the following products be made
WS6, CHEM 211, Dr. Poutsma
How are single bonds formed?
Model 1: Bonds and Pi () Bonds.
There are two different types of bonds that are possible in organic molecules: and .
single bond = one bond
double bond = one bond plus o
WS5, CHEM 211, Dr. Poutsma
Part A: Polarity
Are electrons shared equally in a covalent bond?
Model 1: Polar Bonds
In chemistry, a bond or molecule that is polar has both partial positive and partial negative charges
(indicated by + or ). A b
Functional Group Priorities
ether, halogen, nitro, alkyl
Hints for Drawing Resonance Structures
a) Based on the curved arrows for the resonance structures above, which direction do the
electrons flow in the resonance structures of cations: away from the positive charge or
WS3, CHEM 211, Dr. Poutsma
What are the correct ways to draw and use resonance structures?
Model 1: Carboxylate Anion
Resonance structures are two or more legitimate Lewis structures for the same compound with
formal charges on dif
WS2, CHEM 211, Dr. Poutsma
What is the 3D structure of a molecule?
Model 1: Types of Electron Groups.
A group of electrons (a lone pair, a single bond, a double bond, or a triple bond) repels other
electrons. Groups of elect
WS1, CHEM 211, Dr. Poutsma
How are electrons arranged in a molecule?
Model 1: Ionic Bonds
Ionic bond: Formed by attraction between a cation (positively charged atom or molecule) and an
anion (negatively charged atom or molec
CHEM 211, Dr. Poutsma
How are electrons arranged about the nucleus?
Model 1: Atomic Orbitals
Atomic orbitals define the energies and most probable locations of the electrons in an atom. A
location where the probability is zero (i.e., the electron
Addition via Cyclic Intermediate, Cont.
What is the regiochemistry and stereochemistry of anti-Markovnikov addition of H and OH?
Model 1: Lewis Acids (and Lewis Bases)
Lewis acid = molecule with an atom that is electron deficient (a.k.a. ele