Potassium Carbonate → 3-(1,1-Dioxidotetrahydro-2H-thiopyran-3-yl)-5-(3-thienyl)-1H-indole-7-carboxamide

Participants

Reaction Conditions

Reaction Steps

5-Bromo-3-(1,1-dioxidotetrahydro-2H-thiopyran-3-yl)-1H-indole-7-carboxamide (0.069 g, 0.187 mmol) and 3-thienylboronic acid (0.031 g, 0.242 mmol) was dissolved in a 6:1 solution of 1,4 dioxane (3 mL)/water (0.5 mL) in a 20 mL microwave reaction vessel. Potassium carbonate (0.129 g, 0.933 mmol) was added and the solution was degassed with Nitrogen. PdCl2(dppf)2 (0.023 g, 0.032 mmol) was added and the reaction was heated in a microwave at 100° C. for 20 min. The solution was passed through a StratoSphere SPE PL-Thiol MP SPE column to remove palladium and purified on Gilson preparative HPLC using Acetonitrile/Water with 0.1% NH4OH. The desired fractions were concentrated, giving 0.038 g (54%) of the title compound.

Provenance & Evidence