N-[(6-chloropyridin-3-yl)methyl]-2,2-difluoroethanamine → 4-{[(6-chloropyridin-3-yl)methyl](2,2-difluoroethyl)amino}furan-2(5H)-thione

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반응 단계

105 mg (0.506 mmol) of N-[(6-chloropyridin-3-yl)methyl]-2,2-difluoroethanamine (which can be prepared according to: WO 2007/115644 A1, WO 2008/009360 A2) were added to 20 mg (0.169 mMol) of 4-hydroxyfuran-2(5H)-thione (known from: R. Labruère et al., Synthesis 4163-4166, 2006) in 0.5 ml of acetic acid, and the mixture was stirred at room temperature for 14 days. Concentration under reduced pressure and purification of the residue by preparative HPLC (RP18, CH3CN—H2O) gave 15 mg (yield: 28.8% of theory) of 4-{[(6-chloropyridin-3-yl)methyl](2,2-difluoroethyl)amino}furan-2(5H)-thione.

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