In connection with our research of new antitumor compounds, previously undescribed approaches to the 1-(2-chlorophenyl) isoquinoline-3-carboxylic acid 9 are reported here. Two related accesses from phenylethylamine or amphetamine were investigated and were found to be successful. A more robust synthesis, using Suzuki's cross-coupling between 2- chlorophenylboronic acid 15 and the previously unreported methyl-1-bromoisoquinoline-3 ...