Tetrabutylammonium Fluoride → HCID 131736916, compound

Participants

Reaction Steps

A mixture of tert-butyl (3R,4S)-3-((6-(2,6-dichloro-3,5-dimethoxyphenyl)quinazolin-2-yl)amino)-4-(((2-(trimethylsilyl)ethoxy)carbonyl)amino)pyrrolidine-1-carboxylate (2.77 g, 4.1 mmol) and 1M TBAF in THF (6.1 mL, 6.1 mmol) was stirred in THF (27 mL) at 50° C. for 4 h and then 16 h at room temperature. The reaction mixture was diluted with 10% methanol in dichloromethane (100 mL) and washed with water (50 mL). The aqueous layer was then extracted with fresh dichloromethane (3×20 mL). The combined organic layers were washed with saturated brine solution, dried over sodium sulfate, filtered, concentrated down, and dried to yield tert-butyl (3S,4R)-3-amino-4-((6-(2,6-dichloro-3,5-dimethoxyphenyl)quinazolin-2-yl)amino)pyrrolidine-1-carboxylate as a yellow solid (2.1 g, 94%).

Provenance & Evidence