????????????? C=O - PowerPoint PPT Presentation

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????????????? C=O

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????????????????????????????????????????????????????????????? -(o)ic ... ???????????????????????? aliphatic ??? aromatic aldehyde. 403221-aldehyde. 39. 2.2. ... – PowerPoint PPT presentation

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Title: ????????????? C=O


1
403221 ?????????????????????????????
  • ??. ??. ??????? ???????
  • ??????????? ??????????????
  • ??????????????????????

2
?????????
  • ????????????? CO
  • ?????????? CnH2nO

3
????????????????????? (aldehyde)
  • ?????????
  • ??????????????????????????????????????????????????
    ??????????? -(o)ic acid ???? aldehyde

4
  • ???? IUPAC
  • ???????????????????????????????
    ?????????????????? alkanal ???????
    ?????????????? 1

5
????????????????? (ketone)
  • ?????????
  • ??????????????????

6
  • ?????????????????? 2 ????????????????? CO
    ????????????????????????? ketone

7
  • ???? IUPAC
  • ???????????????????????????????
    ?????????????????? alkanone ??????????????????
    ???????????????????????

8
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9
???????????????
  • ????????
  • MW ???????? (oC)
  • CH3CH2CH2-C-H 72 76
  • CH3CH2-C-CH3 72 80
  • CH3CH2CH2CH2CH3 72 36
  • CH3CH2OCH2CH3 74 35
  • CH3CH2CH2CH2OH 74 118

10
  • ????????? ???????????????????????????? ??????????
    ??????????????????????????????????????????????
  • ?????????????????? CO ?????????????? ??????????
    dipole ????????????????????????
    ???????????????????????????????????

11
  • ????????
  • ????????? ????????????????????????????????????????
    ??????????????????????
  • ???????????????????????????????

12
??????????????????
  • 1. ????????? oxidation ??? 1o ROH

?????????????????????? C ?????????????????
13
  • 2. Reimer-Tiemann reaction ????????????? phenolic
    aldehyde

3. Gatterman-Koch reaction ?????????????
aromatic aldehyde
14
4. Rosenmund reduction
15
??????????????
  • 1. ????????? oxidation ??? 2o ROH

16
  • 2. ????????? hydration ??? alkyne

17
  • 3. ????????? hydrolysis ??? geminal dihalide

18
  • 4. ????????? Friedel-Craft acylation

?????????????????? C ?????????????????
19
  • 5. ???????????????? nitrile ??? RMgX ???? RLi

?????????????????? C ?????????????????
20
  • 6. ???????????????? acid chloride ??? R2CuLi

R, R ??????? alkyl ???? aryl ?????
?????????????????? C ?????????????????
21
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22
  • 7. ???????????????? acid chloride ???
    organocadmium

?????????????????? C ?????????????????
23
  • ?????? Grignard reagent ???? organolithium ???
    organocadmium

24
  • 8. ????????? ozonolysis ??? alkene

Asymmetric alkene ???????????? 2 ???? Symmetric
alkene ?????????????????????
25
??????????????????????????????1. nucleophilic
addition
Nucleophile ?????? HCN hydrogen cyanide ROH
alcohol NaHSO3 sodium bisulfite RMgX Grignard
reagent HNH2 ammonia ??? ??????????? ammonia
26
  • 1.1. Addition of HCN

27
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28
  • 1.2. Addition of alcohol

29
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30
  • ?????????????

31
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32
  • 1.3. Addition of bisulfite

?????? aldehyde ketone ???????????????????????????
33
  • 1.4. Addition of Grignard reagent (RMgX)

34
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35
  • 1.5. Addition of ammonia derivative

Reagent Product NH2OH hydroxylamine oxime
NH2NH2 hydrazine hydrazone phenylhydrazin
e phenylhydrazone semicarbazide semicarb
azone
36
  • ?????????????

37
2. Oxidation
  • 2.1. Oxidation of aldehyde
  • ???????????????????????? aldehyde ??? ketone

38
Fehlings reagent Cu2 tartrate
complex Benedicts reagent Cu2 citrate
complex ???????????????????????? aliphatic ???
aromatic aldehyde
39
  • 2.2. Oxidation of methyl ketone (iodoform test)

alcohol ??? oxidize ??????? methyl ketone ??????
haloform ???????
40
3. Reduction
  • 3.1. Reduction to alcohol

41
  • 3.2. Reduction to hydrocarbon

42
4. ???????????? a-hydrogen
  • 4.1. Keto-enol tautomerization

Enolate anion ????????????? Resonance
resonance form
43
  • 4.2. Halogenation ?????????????????????? a-H

?????????????
44
  • ??????? iodoform

45
?????????????
46
  • 4.3. Aldol condensation

?????????????
47
???????????????? aldol ?????? dehydration
48
5. Canizzaro reaction
  • ?????????????? aldehyde ???????? a-H
  • autooxidation-reduction

49
?????????????
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