Reaction #52411

Reaction equation

1-cyclopropyl-6-ethynyl-4,4-dimethyl-1,2,3,4-tetrahydro quinoline

4-[(8-cyclopropyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1′-cyclopropane]-6yl)ethynyl]-2-fluoro-benzoic acid methyl ester

triethyl amine

methyl-4-iodo-phenyl acetate

4-iodo phenyl acetic acid methyl ester

Reagent B

4-iodo phenyl acetic acid methyl ester

tetrahydrofuran

Intermediate 53

4-[(8-cyclopropyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1′-cyclopropane]-6yl)ethynyl]-2-fluoro-benzoic acid methyl ester

→

title compound

[4-(1-Cyclopropyl-4,4-dimethyl-1,2,3,4-tetrahydro-quinolin-6-yl-ethynyl)phenyl] acetic acid methyl ester

Solvents

ethyl acetate

hexane

Conditions

Procedure

Following general procedure F and using 1-cyclopropyl-6-ethynyl-4,4-dimethyl-1,2,3,4-tetrahydro quinoline (Intermediate 53, 0.05 g, 0.22 mmol), methyl-4-iodo-phenyl acetate (Reagent B, 0.055 g, 0.2 mmol), triethyl amine (5 mL), tetrahydrofuran, copper(I)iodide(0.025 g, 0.13 mmol) and dichlorobis(triphenylphosphine)palladium(II) (0.75 g, 0.11 mmol) followed preparative normal phase HPLC using 10% ethyl acetate in hexane as the mobile phase, the title compound was obtained (0.089 g, 100%).

Source