Dichloromethane → tert-butyl (2,3-dihydro-1,4-benzodioxin-6-ylmethyl)(1-(2-(4-methyl-7-((methylamino) carbonyl)-2-oxoquinolin-1(2H)-yl)ethyl)piperidin-4-yl)carbamate

Participants

Reaction Steps

To 1.7 mL of dichloromethane solution containing 0.10 g of 1-(2-(4-((tert-butoxycarbonyl)(2,3-dihydro-1,4-benzodioxin-6-ylmethyl)amino)piperidin-1-yl)ethyl)-4-methyl-2-oxo-1,2-dihydroquinoline-7-carboxylic acid, 13 mg of methylamine hydrochloride, 0.12 g of O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate and 89 μL of triethylamine were added at room temperature, stirred for 30 min, and allowed to stand for 12 hours. Further, 13 mg of methylamine hydrochloride, 0.12 g of O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate, and 89 μL of triethylamine were added. Water and ethyl acetate were added, the insoluble material was filtered off, the organic layer was separated, washed with aqueous saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. The residue thus obtained was purified by basic silica gel column chromatography [eluent; chloroform:water=100:1], to give 58 mg of tert-butyl(2,3-dihydro-1,4-benzodioxin-6-ylmethyl)(1-(2-(4-methyl-7-((methylamino)carbonyl)-2-oxo-1,2-dihydroquinolin-1-yl)ethyl)piperidin-4-yl)carbamate as a brown oil.

Provenance & Evidence