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Organic chemistry 2 samenvatting powerpoints

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  • Hoofdstuk 19 tot en met 27
  • October 13, 2021
  • 13
  • 2021/2022
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Chapter 19

Aldehyde:




- Reactiever door minder sterische hinder en C=O meer gepolariseerd

Keton:




Carbonyl groep:




Nucleofielen aanval

Basisch/neutraal milieu:
1. Aanval nucleofiel op C=0
2. Protoneren O-

, Zuur milieu:

1. Protoneren C=O
2. Aanval nucleofiel




Voorbeeld 1: Gringnard reagent Voorbeeld 2: Hydride reagent additie




Amines (zuur gekatalyseerd)

Primaire amine  imine H+
H H
O O O
- pH<4  amine geprotoneerd
R NH2
- 4<pH<5  optimum H2N
- pH>5  H+ afwezig om OH te protoneren R

Proton
transfer


OH2

N N - H2O HN
R H R
R
imine
H2O

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