3',6'-dihydro-2'H-[3,4']bipyridinyl-4,1'-dicarboxylic acid 1'-t-butyl ester 4-methyl ester → HCID 58442838, compound

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Reaction Steps

Pd(OH)2/C (0.4 g) was added to a solution of 3′,6′-dihydro-2′H-[3,4′]bipyridinyl-4,1′-dicarboxylic acid 1′-t-butyl ester 4-methyl ester (500 mg, 1.2 mmol, 1.0 eq.) in EtOAc (15 mL), maintained under hydrogen at 1 atm. The resulting solution was stirred over night at room temperature. The solids were filtered. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column and eluted with EtOAc/PE (1:3) to yield 3′,4′,5′,6′-tetrahydro-2′H-[3,4′]bipyridinyl-4,1′-dicarboxylic acid 1′-t-butyl ester 4-methyl ester (240 mg) as a colorless liquid.

Provenance & Evidence