Sodium Carbonate → Cyclopropyl-{5''-[4-(4-isopropyl-piperazin-1-ylmethyl)-phenyl]-[2,2';4',3'']terpyridin-6'-yl}-amine

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Reaction Steps

To a solution of 4-((4-Isopropyl-piperazin-1-yl)methyl)-phenyl boronic acid (Intermediate B3) (3 eq, 0.408 mmol, 0.106 g) in dry DME (1 ml) under an inert atmosphere of argon is added 2M Na2CO3 (6 eq, 0.816 mmol, 0.8 ml) followed by (5″-Bromo-[2,2′;4′,3″]terpyridin-6′-yl)-cyclopropyl-amine (Example 1.26) (1 eq, 0.136 mmol, 50 mg) and PdCl2dppf (0.1 eq, 0.0136 mmol, 10 mg). The reaction mixture is heated using microwave radiation at 90° C. for 2 hours. The reaction mixture is dissolved in DCM and washed with water. The organic solvent is reduced in vacuo and the residue is purified by reverse phase column chromatography (Isolute™ C18, 0-40% acetonitrile in water—0.1% TFA). The appropriate fractions by HPLC are combined and concentrated in vacuo. The resulting residue is dissolved in MeOH and loaded onto a SCX-2 cartridge eluting with MeOH followed by 2M NH3 in MeOH. The methanolic ammonia fractions are combined, concentrated in vacuo and dried under vacuum to afford the title compound; [M+H]+ 505.

Provenance & Evidence