Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 56239-26-0, name is cis-4-Aminocyclohexanol hydrochloride. This compound has unique chemical properties. The synthetic route is as follows. 56239-26-0
EXAMPLE 86[0124] Preparation of 4-((R)-Tetrahydrofuran-3-yloxy)-5-(2,3- dihydrobenzo[b][l,4]dioxin-6-yl)-N-((ls,4S)-4-methoxycyclohexyl)pyrimidin-2-amineJ.: Preparation of Starting Material 4-Methoxycyclohexanamine HydrochlorideReagents and Conditions: a) K2CO3 H2; b) KHMDS, MeI, and THF; c) NH2NH2, EtOH, then 4M HCI H2N HCIStep 1-1: Preparation of 2-((ls,4s)-4-Hydroxycyclohexyl)isoindoline-l,3-dione (2) [0125] To a stirred solution of cis-4-aminocyclohexanol HCl (107 mg, 0.71 mmol) in H2O(1.7 mL) at room temperature was added K2CO3 (174 mg, 1.25 mmol), followed by N- carboethoxyphthalimide (174 mg, 0.79 mmol). After stirring at room temperature for 30 min, the solid was filtered, washed with H2O, and dried in vacuo to provide the title compound (140 mg, 81percent) as a white solid. 1H NMR (300 MHz, CDCl3) delta 7.82 (m, IH), 7.79 (m, IH), 4.10 (m, IH), 2.64 (m, IH), 1.5-2.0 (set of m, 4H). MS (ESI) m/z: Found: 491 (2M+ + 1), CaIc. 245(M+).
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Reference:
Patent; CYSTIC FIBROSIS FOUNDATION THERAPEUTICS, INC.; CHIANG, Phoebe; GHOSH, Shomir; WO2010/68863; (2010); A2;,
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