5B: Bonding and Isomers Flashcards
1
Q
4 key factors for nucleophilic ability?
A
- solvent: aprotic increase going up group and protic increase doing down group
- negative charge
- decreased bulkiness to reduce steric hinderance
- decreased electronegativity
2
Q
structural isomer
A
same molecular formula but different bond connectivity
3
Q
enantiomer
A
same molecular formula and connectivity but different configuration
4
Q
chirality
A
4 different substituents
5
Q
epimer
A
diastereomer with 1 chiral carbon configuration change
6
Q
acetyl and ketal formation catalyzed by acid/base conditions
A
acidic
7
Q
How is a glycosidic bond formed?
A
covalent bond formed when anomeric carbon react with hydroxyl group of another sugar
8
Q
Impurities in a sample will have what effect on the melting point?
A
lowers and broadens melting point range
