[Cl:1][C:2]1[N:7]=[C:6]([NH:8][CH:9]2[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][CH2:10]2)[C:5]([C:16]#[C:17][CH2:18][OH:19])=[CH:4][N:3]=1.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1>[Cl:1][C:2]1[N:3]=[CH:4][C:5]2[CH:16]=[C:17]([CH2:18][OH:19])[N:8]([CH:9]3[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][CH2:10]3)[C:6]=2[N:7]=1To a suspension of 3-(2-chloro-4-(cycloheptylamino)pyrimidin-5-yl)prop-2-yn-1-ol (8.64 g, 30.9 mmol) in THF (200 mL) was added a solution of TBAF in THF (1 M, 66 mL, 2.1 equiv) and the resulting mixture was heated at 63° C. for 5 h. The reaction mixture was concentrated to remove THF, diluted with EtOAc (350 mL), washed with water (140 mL) and brine (140 mL), dried over Na2SO4, filtered and concentrated. Trituration of the residue using iPrOH, CH2Cl2, and MeCN followed by column chromatography of the mother liquor (EtOAc/heptane 20 to 100%) provided (2-chloro-7-cycloheptyl-7H-pyrrolo[2,3-d]pyrimidin-6-yl)methanol (6.24 g) in 72% yield. 1H NMR (400 MHz, CDCl3) δ 8.69 (s, 1H), 6.45 (s, 1H), 4.83 (s, 2H), 4.61 (m, 1H), 2.54 (m, 2H), 1.98-1.86 (m, 4H), 1.73-1.55 (m, 6H); MS m/z 280.4 (M+H)+
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