6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine → HCID 86656452, compound

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Reaction Steps

A solution of 6-chloro-1,7-naphthyridin-4-yl trifluoromethanesulfonate (1.0 equiv.), 6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (1.0 equiv.) and Pd(dppf)Cl2—CH2Cl2 (0.1 equiv.) in 3:1 DME/2M Na2CO3 was heated in a microwave at 100° C. for 15 minutes. Upon cooling, the solution was partitioned between EtOAc and Na2CO3(sat.) washed further with NaCl(sat.), dried over MgSO4, concentrated and purified by silica gel chromatography (2-4% MeOH/CH2Cl2 w/0.1% DIEA eluant) to yield tert-butyl 4-(6-chloro-1,7-naphthyridin-4-yl)-6-methylpyridin-2-amine (17%). LC/MS=271.0 (M+H), LC=1.81 min.

Provenance & Evidence