acetals, imine, enamine, protective groups, etc. (ch 19) Flashcards
1
Q
H3O+
A
acetal, imine, or enamine –> carbonyl group
2
Q
[H+] 2 ROH
A
aldehyde/ketons –> acetal. can be used to protect aldehydes/ketons
3
Q
[H+] HOCH2CH2OH
A
aldehyde/ketone –> cyclic acetal. can be used as protective group.
4
Q
[H+] HSCH2,CH2,SH
A
aldehyde/ketone –> cyclic thioacetal
5
Q
Raney nickel
A
thioacetal —> alkane
6
Q
[H+] RNH2
A
aldehyde/ketone –> imine
7
Q
[H+] R2NH
A
aldehyde/ketone –> enamine
8
Q
[H+] NH2OH
A
aldehyde/ketone –> oxime
9
Q
[H+] NH2NH2
A
aldehyde/ketone –> hydrazone
10
Q
NaOH, H2O, heat
A
hydrazone –> alkane
11
Q
- LiAlH4 2. H3O+
A
aldehyde/ketone –> alcohol
12
Q
- RMgBr 2. H3O+
A
forms alcohol w new C-C bond
13
Q
HCN, KCN
A
aldehyde/ketone –> cyanohydrin
14
Q
Wittig reaction (RCHPPh3)
A
forms alkene w new C=C bond in loction of former carbonyl group
15
Q
RCO3H
A
ketone –> ester
16
Q
TMSCl, Et3N
A
protects alochol
17
Q
TBAF
A
deprotects alochol
