p-Toluenesulfonic acid → 1-(5-((4-(((7R,8aS)-5,5-dimethyloctahydroindolizin-7-yl)amino)-5-fluoropyrimidin-2-yl)amino)-2-(4-(oxetan-3-yl)piperazin-1-yl)phenyl)-4-methyl-1,4-dihydro-5H-tetrazol-5-one

Participants

Reaction Conditions

Reaction Steps

A mixture of (7R,8aS)-N-(2-chloro-5-fluoropyrimidin-4-yl)-5,5-dimethyloctahydroindolizin-7-amine (0.2 g, 1.0 eq, 0.7 mmol), 1-(5-amino-2-(4-(oxetan-3-yl)piperazin-1-yl)phenyl)-4-methyl-1,4-dihydro-5H-tetrazol-5-one (0.3 g, 1.4 eq, 0.9 mmol), PTSA (0.4 g, 2.0 eq, 1.9 mmol) was taken in iPrOH (50 mL) and heated at 120° C. overnight. The volatiles were removed under vacuum to leave a crude solid. The solid was purified by column chromatography on silica gel (ISCO System) using 2M NH3 in MeOH/CH2Cl2 (gradient system from 0:1 to 2:8) as eluent to give the product as a solid in 55% yield.

Provenance & Evidence