tert-butyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A 250-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 1,4-dioxane (100 mL), 5-bromo-2-nitropyridine (2.5 g, 12.4 mmol), tert-butyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate (869 g, 4.1 mmol), Pd2(dba)3 (193 mg, 0.21 mmol), XantPhos (237 mg, 0.41 mmol), and cesium carbonate (2.7 g, 8.2 mmol). After three cycles of vacuum/argon flush, the mixture was stirred at 110° C. overnight. The reaction was cooled to room temperature. It was then filtered and the filtrate was evaporated in vacuo. The residue was purified by silica-gel column chromatography eluting with 3:1 petroleum ether/ethyl acetate to afford 152a (2.63 g, 66.8%) as a yellow solid. MS-ESI: [M+H]+ 335.2. A 250-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser After three cycles of vacuum/argon flush The reaction was cooled to room temperature It was then filtered the filtrate was evaporated in vacuo The residue was purified by silica-gel column chromatography eluting with 3:1 petroleum ether/ethyl acetate

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A 250-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 1,4-dioxane (100 mL), 5-bromo-2-nitropyridine (2.5 g, 12.4 mmol), tert-butyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate(869 g, 4.1 mmol), Pd2(dba)3 (193 mg, 0.21 mmol), XantPhos (237 mg, 0.41 mmol), and cesium carbonate (2.7 g, 8.2 mmol). After three cycles of vacuum/argon flush, the mixture was stirred at 110° C. overnight. The reaction was cooled to room temperature. It was then filtered and the filtrate was evaporated in vacuo. The residue was purified by silica-gel column chromatography eluting with 3:1 petroleum ether/ethyl acetate to afford 152a (2.63 g, 66.8%) as a yellow solid. MS-ESI: [M+H]+ 335.2. A 250-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser After three cycles of vacuum/argon flush The reaction was cooled to room temperature It was then filtered the filtrate was evaporated in vacuo The residue was purified by silica-gel column chromatography eluting with 3:1 petroleum ether/ethyl acetate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from cis-4-((E)-2-(4-fluorobenzoylimino)-6-((4-(2-hydroxypropan-2-yl)piperidin-1-yl)methyl)-2,3-dihydro-1H-benzo[d]imidazol-1-yl)cyclohexanecarboxylic acid and tert-butyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate using a method analogous to that used in the preparation of (E)-4-fluoro-N-(6-((4-(2-hydroxypropan-2-yl)piperidin-1-yl)methyl)-1-(cis-4-(piperazine-1-carbonyl)cyclohexyl)-1H-benzo[d]imidazol-2(3H)-ylidene)benzamide (70 mg, 51% yield). MS, m/z (C41H55FN6O5): calcd, 730.4. found, 731.1 [M+H].

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of methyl (4R)-6-(bromomethyl)-4-(2-chloro-4-fluoro-phenyl)-2-thiazol-2-yl-1,4-dihydropyrimidine-5-carboxylate (compound C, 80 mg, 0.13 mmol) in dimethylformamide (3.0 mL) was added compound tert-butyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate (28 mg, 0.13 mmol) and potassium carbonate (40 mg, 0.29 mmol). The reaction mixture was stirred at room temperature overnight. The reaction mixture was poured into ice-water, extracted with EA (20 mL) three times. The combined organic phase was concentrated to give a crude tert-butyl 8-[[(4R)-4-(2-chloro-4-fluoro-phenyl)-5-methoxycarbonyl-2-thiazol-2-yl-1,4-dihydropyrimidin-6-yl]methyl]-3,8-diazabicyclo[3.2.1]octane-3-carboxylate (80 mg). extracted with EA (20 mL) three times The combined organic phase was concentrated

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A 250-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 1,4-dioxane (100 mL), 5-bromo-2-nitropyridine (2.5 g, 12.4 mmol), tert-butyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate (869 g, 4.1 mmol), Pd2(dba)3 (193 mg, 0.21 mmol), XantPhos (237 mg, 0.41 mmol), and cesium carbonate (2.7 g, 8.2 mmol). After three cycles of vacuum/argon flush, the mixture was stirred at 110° C. overnight. The reaction was cooled to room temperature. It was then filtered and the filtrate was evaporated in vacuo. The residue was purified by silica-gel column chromatography eluting with 3:1 petroleum ether/ethyl acetate to afford 152a (2.63 g, 66.8%) as a yellow solid. MS-ESI: [M+H]+ 335.2. A 250-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser After three cycles of vacuum/argon flush The reaction was cooled to room temperature It was then filtered the filtrate was evaporated in vacuo The residue was purified by silica-gel column chromatography eluting with 3:1 petroleum ether/ethyl acetate

Conditions: temp:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: tert-Butyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate (454 mg, 2.36 mmol) and 2-bromo-3-chloropyridine (418 mg, 1.97 mmol) were combined in dry N,N-dimethylformamide (10 mL) and treated with potassium carbonate (408 mg, 2.95 mmol). After stirring at 120° C. for 48 hours, the mixture was allowed to cool to room temperature, diluted with ethyl acetate, filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by chromatography on silica gel (4:1, hexanes:ethyl acetate) to provide the title compound. MS (ESI) m/z: 324 (M+H)+; 1H NMR (CDCl3) δ 1.47 (s, 9H), 1.77 (m, 2H), 1.93 (m, 2H), 3.22 (d, 1H), 3.31 (d, 1H), 3.76 (d, 1H), 3.90 (d, 1H), 4.53 (d, 2H), 6.76 (dd, 1H), 7.56 (dd, 1H), 8.09 (dd, 1H). to cool to room temperature filtered the filtrate was concentrated under reduced pressure The residue was purified by chromatography on silica gel (4:1, hexanes:ethyl acetate)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: tert-Butyl 8-benzyl-3,8-diazabicyclo[3.2.1]octane-3-carboxylate (5.46 mmol, 203 mg) and Pearlman's catalyst were combined in methanol under a hydrogen atmosphere (1 atmosphere) stirred overnight at room temperature. Purged with nitrogen, filtered off the catalyst, and concentrated the filtrate to a yellow liquid. The mixture was filtered and the filtrate was concentrated under reduced pressure. The residue was purified by chromatography on silica gel (5% MeOH, 0.5% NH4OH in CH2Cl2, then 10% MeOH, 1% NH4OH in CH2Cl2) to provide the title compound. MS (DCI/NH3) m/z: 213 (M+H)+; 1H NMR (CDCl3) δ 1.45 (s, 9H), 1.75 (br, 4H), 2.93 (d, 1H), 3.01 (d, 1H), 3.47 (d, 2H), 3.68 (d, 1H), 3.81 (d, 1H). Purged with nitrogen filtered off the catalyst concentrated the filtrate to a yellow liquid The mixture was filtered the filtrate was concentrated under reduced pressure The residue was purified by chromatography on silica gel (5% MeOH, 0.5% NH4OH in CH2Cl2