Sodium Carbonate → tert-Butyl 3-((3-(1-(4-hydroxybutanoyl)-1,2,3,4-tetrahydroquinolin-5-yl)benzyloxy)carbonylamino)propanoate

Participants

Reaction Conditions

Reaction Steps

To a degassed mixture of 1-(5-bromo-3,4-dihydroquinolin-1(2H)-yl)-4-hydroxybutan-1-one (0.208 g, 0.698 mmol), 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (0.532 g, 2.094 mmol), and potassium acetate (0.411 g, 4.19 mmol) in DMF (10 mL) was added PdCl2(dppf)-CH2Cl2 (0.057 g, 0.070 mmol). The vial was purged with argon, sealed, and stirred at 90° C. for 2 d. tert-Butyl 3-((3-bromobenzyloxy)carbonylamino)propanoate (0.5 g, 1.396 mmol), PdCl2(dppf)-CH2Cl2 (0.057 g, 0.070 mmol), and 2 M Na2CO3 (2 mL, 1.396 mmol) were added. The reaction mixture was purged with argon and stirred at 95° C. overnight. At the conclusion of this period, the reaction mixture was quenched with water and extracted with ethyl acetate. The organic extract was dried, concentrated, and purified by flash chromatography (0-100% ethyl acetate:hexanes then 10% CH3OH:ethyl acetate) to afford the title compound (0.24 g, 69% yield) as a dark brown oil. LCMS, [M+H]+=497.4.

Provenance & Evidence