Reaktion #537033

Reaktionsgleichung

2,4-dichloro-6,7-dihydrothieno[3,2-d]pyrimidine

diisopropylethylamine

(R)-(−)-2-amino-3-methyl-1-butanol

→

(R)-2-(2-chloro-6,7-dihydrothieno[3,2-d]pyrimidin-4-ylamino)-3-methylbutan-1-ol

Lösungsmittel

dioxane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeno further reaction
2. 2
   Temperaturafter cooling
3. 3
   Sonstigeevaporated down
4. 4
   workup.ADDITIONThe residue is treated with petroleum ether/ethyl acetate 9:1 in the ultrasound bath
5. 5
   Filtrationfiltered
6. 6
   Sonstigedried
7. 7
   Sonstige8.3 g (III-1) are obtained as a solid

Vorschrift

7.2 g 2,4-dichloro-6,7-dihydrothieno[3,2-d]pyrimidine (II) are placed in 36 ml dioxane, then 18 ml diisopropylethylamine and then 6.1 g (R)-(−)-2-amino-3-methyl-1-butanol are added. The reaction mixture is heated to 100° C. until there is no further reaction, and after cooling evaporated down. The residue is treated with petroleum ether/ethyl acetate 9:1 in the ultrasound bath, the solid is suction filtered and dried. 8.3 g (III-1) are obtained as a solid. Analytical HPLC (method A): RT=2.75 min

Quelle