Dimethylformamide → 4-((1-(1,3-Difluoropropan-2-yl)-4-fluoropiperidin-4-yl)methoxy)-3-nitrobenzenesulfonamide

Participants

Reaction Steps

To a suspension of EXAMPLE 341C (0.100 g) and 1,3-difluoropropan-2-one (0.025 g) in dichloromethane (2 mL) was added sodium triacetoxyborohydride (0.071 g). After 15 minutes, N,N-dimethylformamide was added dropwise until an orange solution resulted (−15 drops). After stirring overnight additional 1,3-difluoropropan-2-one and sodium triacetoxyborohydride were added. After 3 hours, the reaction was loaded onto silica gel (Reveleris 40 g) and eluted with a gradient of 0.5-5% methanol/dichloromethane over 30 minutes (flow=40 ml/minutes) to provide the title compound.

Provenance & Evidence