Reaction #1006947

Reaction equation

7-benzyl-1-cyano-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester

1-aminomethyl-cyclobutanecarboxylic acid tert-butyl ester

→

title compound

Yield 87.3%

1-{[(7-Benzyl-1-cyano-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carbonyl)-amino]-methyl}-cyclobutanecarboxylic acid tert-butyl ester

Yield 87.3%

Solvents

EtOH

Conditions

Workup

1. 1
   OtherSolvent was evaporated in vacuo
2. 2
   Otherthe residue was purified by chromatography (0-30% EtOAc/hexanes+2% AcOH)

Procedure

A mixture of 7-benzyl-1-cyano-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester (25 mg, 0.075 mmol) and 1-aminomethyl-cyclobutanecarboxylic acid tert-butyl ester (55 mg, 0.30 mmol) in EtOH (2 mL) was heated at 140° C. in a microwave reactor for 2 h. Solvent was evaporated in vacuo, and the residue was purified by chromatography (0-30% EtOAc/hexanes+2% AcOH) to give 32 mg of the title compound as a viscous oil. MS: (+) m/z 489.33 (M+1).

Source