반응 #41749

반응 방정식

tert-butyl4-(2-{[4-chloro-3-(trifluoromethyl)phenyl]amino)-1-methylbenzimidazol-5-yloxy)pyridine-2-carboxylate

tert-butyl4-[3-amino-4-(methylamino)phenoxy]pyridine-2-carboxylate

thiourea

trifluoroacetic acid

iodomethane

→

2-{[4-chloro-3-(trifluoromethyl)phenylamino)-1-methylbenzimidazol-5-yloxy)pyridine-2-carboxylic acid

용매

methanol

methylene chloride

반응 조건

후처리

1. 1
   workup.STIRRINGstirred at ambient temperature overnight

실험 절차

To tert-butyl4-[3-amino-4-(methylamino)phenoxy]pyridine-2-carboxylate (1 eq) in methanol was added 4-chloro-3-(trifluoromethyl)benzeneisothiocyanate (1 eq) and stir at ambient temperature for 16 h. Formation of the corresponding thiourea was followed by LC/MS. To it was then added iodomethane (1 eq) and heated to 60° C. for 2 h. Formation of tert-butyl4-(2-{[4-chloro-3-(trifluoromethyl)phenyl]amino)-1-methylbenzimidazol-5-yloxy)pyridine-2-carboxylate was followed by LC/MS. To it in methylene chloride was added trifluoroacetic acid and stirred at ambient temperature overnight. Resulting 4-(2-{[4-chloro-3-(trifluoromethyl)phenylamino)-1-methylbenzimidazol-5-yloxy)pyridine-2-carboxylic acid was purified by preparative chromatography. MS: MH+=462.

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