Reaktion #352902

Reaktionsgleichung

isocyanatoethyl methacrylate

1,1'-bi-2-naphthol

cyclohexylamine

dibutyltin dilaurate

→

1-cyclohexyl-3-methacryloxyethyl urea

Lösungsmittel

methylene chloride

methylene chloride

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeA 3-neck, 250-mL round bottom flask equipped with a reflux condenser
2. 2
   workup.STIRRINGThe reaction mixture was kept stirred for an additional 30 minutes
3. 3
   FiltrationThe solution was filtered
4. 4
   Sonstigeevaporated to dryness
5. 5
   Sonstigeto recover the product

Vorschrift

A 3-neck, 250-mL round bottom flask equipped with a reflux condenser was charged with isocyanatoethyl methacrylate (7.79 g), 1,1'-bi-2-naphthol (1.3 mg) and 50 mL of methylene chloride. While stirring, cyclohexylamine (5.24 g) and dibutyltin dilaurate (52.3 mg) in 50 mL of methylene chloride were added over a 15 minute period. The reaction mixture was kept stirred for an additional 30 minutes. The solution was filtered and evaporated to dryness to recover the product. The product was characterized by H-NMR, 0.72-2.10 ppm (m, 1H), 1.90 ppm (s, 3H), 3.45 ppm (t, 2H), 3.50 ppm (hidden, 1H), 4.18 ppm (t, 2H), 5.12 ppm (s, 1H), 5.26 ppm (s, 1H), 5.52 ppm (s, 1H), 6.10 ppm (s, 1H).

Quelle