Reaktion #2353253

Reaktionsgleichung

2-isopropyl-4,5-dimethoxy-benzaldehyde

4-chloro-5-iodo-2-methylsulfanyl-pyrimidine

isopropyl magnesium bromide

→

(4-chloro-2-methylsulfanyl-pyrimidin-5-yl)-(2-isopropyl-4,5-dimethoxy-phenyl)-methanol

Ausbeute 82.0%

Lösungsmittel

THF

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe mixture was quenched by the addition of brine
2. 2
   Extraktionextracted with CH2Cl2
3. 3
   TrocknenThe combined organic layers were dried over Na2SO4
4. 4
   Filtrationfiltered
5. 5
   Einengenconcentrated in vacuo
6. 6
   SonstigePurification via flash chromatography (ethyl acetate)

Vorschrift

To a solution of 4-chloro-5-iodo-2-methylsulfanyl-pyrimidine (1.10 g, 3.9 mmol) in 20 mL THF at −40° C. was added isopropyl magnesium bromide (2.3 mL, 2 M in THF) ) over 5 minutes. After 30 minutes, 2-isopropyl-4,5-dimethoxy-benzaldehyde from step 3 (1.04 g, 4.6 mmol) was added and the solution was warmed to room temperature. The mixture was quenched by the addition of brine, and extracted with CH2Cl2. The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo. Purification via flash chromatography (ethyl acetate) afforded (4-chloro-2-methylsulfanyl-pyrimidin-5-yl)-(2-isopropyl-4,5-dimethoxy-phenyl)-methanol (1.168 g, 82%) as a light yellow solid.

Quelle