Sodium Fluoride → {5-Amino-1-[2-(trityloxy)ethyl]pyrazol-4-yl}methylamine

Participants

Reaction Steps

To a suspension of lithium aluminum hydride (4.89 g, 129 mmol) in tetrahydrofuran (318 ml) was added 5-amino-1-[2-(trityloxy)ethyl]pyrazole-4-carbonitrile (25.4 g, 64.4 mmol) at room temperature. The mixture was stirred under reflux for 12 hours. After cooling on an ice bath, sodium fluoride (25.4 g), tetrahydrofuran (100 ml), dichloromethane (200 ml) and water (10 ml) were added to the reaction mixture. The insoluble materials were removed by filtration. The filtrate was concentrated in vacuo to give {5-amino-1-[2-(trityloxy)ethyl]pyrazol-4-yl}methylamine (19.8 g) as a solid.

Provenance & Evidence