5-(Thiophen-2-yl)pent-4-ynyl methanesulfonate → Ethyl 9-isopropoxy-8-methoxy-2-(3-(methylsulfonyloxy)propyl)-1-(thiophen-2-yl)-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylate

Participants

Reaction Steps

A solution of 280 mg of 6b and 165 mg of 2b in 6 ml of acetic anhydride was heated in a microwave oven for 15 min at 140° C. The reaction mixture was cooled and residual solvents were removed by sequential coevaporation with toluene. The residue was purified by chromatography on silica gel, using a gradient of heptane/ethyl acetate as eluent, to provide 215 mg of 6c; MS-ESI: [M+1] 548.15.

Provenance & Evidence