Part 2 Flashcards
SN1 order of reacitivity
3>2>1*>methylation
2 steps mechanism
Solvent for SN1 mechanism
Polar protic solvent
SN2 order of reacitivity
Methyl>1>2>3*
*(one step mechanism)
Difference between polar protic and polar aprotic
Polar protic are capable of H-bonding, polar aprotic are incapable
Classify each solvent as protic/aprotic
A. HOCH2CH2OH
B. CH3CH2OCH2CH3
C. CH3COOCH2CH3
A. Protic
B. Aprotic
C. Aprotic
Trend for good leaving group
\
\/
Ex.
CH3CH2Cl vs CH3CH2I
CH3CH2I is better LG
Major component of rubbing alcocohol
2-propanol
Ethylene glycol is for
Anti-freeze
Alkenes are also called
Olefins
Degree of unsaturation formula
P=(2 + 2C + N -H -X)/2
As the number of double bond _____, MELTING point decreases
Increases
Difference between E and Z isomer
E isomer - has two higher priority groups on the opposite sides
Z isomer - has two higher priority groups on the same sides
Measures molecular weight of compound and allows prediction of molecular formula
Mass spectrometry
This method gives the functional group
IR spectroscopy
NMR spectroscopy
Provides the electronic environment of a compound and types of proton
Benzene is first isolated by
Michael Faraday
Degree of unsaturation of benzene
4
Four criteria for aromaticity
- Cyclic
- Planar
- Completely conjugated (alternating pi bonds)
- Huckels rule
Huckels rule formula
4n + 2 = pi electrons
n should be 0, 1, 2 and so forth
Most abundant aldoses
D-glucose and D- galactose
Most abundant dissacharides
Maltose, lactose, sucrose
Maltose is formed by
2 glucose
Reducing sugar
Lactose is formed by
Galactose and glucose
Reducing sugar
Found in the sugar cane and use as a table sugar
Sucrose
Sucrose is formed by
Glucose and fructose
Non-reducing sugar
Three polysaccharide in nature
Cellulose, starch, and glycogen
Difference of cellulose, starch, glycogen
Cellulose-found in cell walls of nearly all plants (subunit:beta glucose)
Starch-main carbohydrate found in seeds and roots
Glycogen-major form of polysaccharide stored in animals
Second most abundant carbohydrate polymer
Chitin
Amino acid with no stereogenic center
Glycine
Differentiate L-amino acid and D-amino Acid
L- amino : naturally occuring
D - amino : rarely found in nature
All amino acids except _____ have the S configuration
Cysteine
Amino acids in protein is joined together by
Peptide or amide bond
Difference of primary, secondat and tertiary structure of protein
Primary - sequence of amino acid
Secondary - alpha helix or beta pleated sheer
Tertiary - 3D shape adopted by the entire peptide chain
20% of starch
Amylose
80% of starch
Amylopectin
Starch component which has alpha 1-4
Amylose
Starch component which has alpha 1-4 and alpha 1-6
Amylopectin
Builiding blocks of DNA
Deoxyribonucleotides
2 categories of lipids
Hydrolyzable and non-hydrolyzable
Hydrolyzable lipids (3)
- Waxes
- triaglycerols
- phospholipids
Non-hydrolyzable lipids
-fat soluble vitamins
-eicosanoids
-steriods
-terpenes
FEST
Difference of hydrolyzable and non-hydrolyzable
Hydrolyzable-can be cleaved into smaller molecules by hydrolysis with H2O
Non-hydrolyzable - vice versa
Polymer plastic (1-7)
- PET
- HDPE
- PVC
- LDPE
- PP
- PS
- Others
Complex network of cross-linked polymers and cannot be remelted from a liquid phase
Thermosetting
Tautomers
Differ in location of double bond and hydrogen
What is epimer
Diastereoisomers that differ in one stereogenic center only
What is an anomer
Differ in the hemiacetal OH
Difference between covalent bond and ionic bond
Covalent bond - bond between two non-metals. Lower BP and MP
Ionic bond - bond between a metal and a non-metal
Define Markovnikoff’s rule
The hallogens attaches to the carbon that is kore alkyl substituted thus producing a jihjer order alkyl halide