Reaktion #60306

Reaktionsgleichung

THF

6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3-(2-methanesulfonyl-ethyl)-3H-benzoimidazole-5-carbaldehyde

tosylmethyl isocyanide

tosylmethyl isocyanide

NaCN

→

(4-Bromo-2-chloro-phenyl)-{4-fluoro-1-(2-methanesulfonyl-ethyl)-6-[4-(toluene-4-sulfonyl)-4,5-dihydro-oxazol-5-yl]-1H-benzoimidazol-5-yl}-amine

Lösungsmittel

EtOH

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.WAITAfter 8 hours
2. 2
   Einengenthe reaction mixture is concentrated under reduced pressure
3. 3
   Sonstigeas is in the next reaction

Vorschrift

6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3-(2-methanesulfonyl-ethyl)-3H-benzoimidazole-5-carbaldehyde 10z (0.050 g, 0.107 mmol) is suspended in EtOH (0.5 mL) under N2 and tosylmethyl isocyanide (0.020 g, 0.105 mmol) is added followed by catalytic NaCN (˜1 mg). After 2 hours, 2 mL THF is added to assist with solubility. After stirring for 16 hours at room temperature, a second equivalent of tosylmethyl isocyanide (0.020 g, 0.105 mmol) is added. After 8 hours, the reaction mixture is concentrated under reduced pressure and used as is in the next reaction: LC/MS ESI (+) m/z 671, 669 (M+Br pattern) detected.

Quelle