Reaktion #52575

Reaktionsgleichung

dithiophenyl acetic acid

2-vinylpyridine

toluene sulfonic acid

→

Dithiophenylacetic Acid, 2-(2-pyridinyl)ethyl Ester

Lösungsmittel

benzene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeplaced in a round bottom flask
2. 2
   Sonstigeequipped with a vigreaux column and magnetic stirbar
3. 3
   TemperaturThe reaction was then heated
4. 4
   Temperaturto reflux
5. 5
   Sonstigeto react for 16 hours
6. 6
   Sonstigewas removed
7. 7
   Sonstigewas then purified by column chromatography (silica 2/1 v/v hexane/ethyl acetate)

Vorschrift

The crude product of newly synthesized dithiophenyl acetic acid (10 g, 59 mmol theoretically), freshly distilled 2-vinylpyridine (6.25 g, 59 mmol), and 1 mol % toluene sulfonic acid were dissolved in benzene and placed in a round bottom flask equipped with a vigreaux column and magnetic stirbar. The reaction was then heated to reflux and allowed to react for 16 hours. The viscous liquid that remained after the solvent was removed was then purified by column chromatography (silica 2/1 v/v hexane/ethyl acetate). Yield=3.9 g. 1H NMR (CDCl3) δ=3.042 (t, 2 H), δ=3.573 (t, 2 H), δ=4.233 (s, 2H ) δ=6.968-7.476 (m, 8H), δ=8.467, (d, 1H). 13C NMR (CDCl3) δ=35.627 (CH2), δ=36.180 (CH2), δ=58.323 (CH2), δ=121.932 (CH), δ=123.383 (CH2), δ=127.501 (CH), δ=128.818 (CH), δ=129.346 (CH), δ=137.272 (C), δ=149.668 (CH), δ=159.305 (C), δ=235.369 (C═S).

Quelle