Cesium carbonate → HCID 59344924, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 1-Benzyl-4-bromo-1H-indole-2-carboxylic acid benzyl ester (235 mg, 0.56 mmol) and 1-methyl-piperazine (80 ul, 0.72 mmol) in 5 ml Dioxane was added to a mixture of Pd2(dba)3 (10 mg, 0.01 mmol), BINAP (18 mg, 0.03 mmol), Cs2CO3 (547 mg, 1.68 mmol). With stirring, the solution was heated at 100° C. overnight and was allowed to cool to room temperature. The reaction mixture was filtered through celite and washed with ethyl acetate. The filtrate was concentrated in vacuo and the resulting brown residue was purified by preparative TLC (7% MeOH in CH2Cl2 containing 0.7% NH4OH) to give 174 mg of 1-benzyl-4-(4-methyl-piperazin-1-yl)-1H-indole-2-carboxylic acid benzyl ester as a yellow solid (71%). MS: (M+H)+ 440.3.

Provenance & Evidence