ARQ 092 synthesis
- Product Name:ARQ 092
- CAS Number:1313883-00-9
- Molecular formula:C27H25ClN6
- Molecular Weight:468.99
![tert-butyl (1-(4-(2-(2-aminopyridin-3-yl)-5-phenyl-3H-imidazo[4,5-b]pyridin-3-yl)phenyl)cyclobutyl)carbamate](/CAS/20180601/GIF/1313881-69-4.gif)
1313881-69-4
1313883-00-9
Step 4: Tert-butyl (1 -(4-(2-(2-(2-aminopyridin-3-yl)-5-phenyl-3H-imidazo[4,5-b]pyridin-3-yl)phenyl)cyclobutyl)carbamate (4.1 g) was dissolved in dichloromethane (100 mL), and a dioxane solution (20 mL) of 4.0 M HCl was slowly added. The reaction mixture was stirred at room temperature for 2.5 hours. After completion of the reaction, ether (50 mL) was added to the suspension and the solid was collected by filtration to afford 3-(3-(4-(1-aminocyclobutyl)phenyl)-5-phenyl-3H-imidazo[4,5-b]pyridin-2-yl)pyridin-2-amine hydrochloride (4.032 g, white solid). The product was characterized by 1H NMR (DMSO-d6, 400 MHz) and LCMS: 1H NMR δ 8.94 (s, 3H), 8.47 (bs, 1H), 8.38 (d, J = 8.8 Hz, 1H), 8.19-8.15 (m, 1H), 8.10-8.03 (m, 3H), 7.93-7.88 (m, 1H), 7.76 (d, J = 8.4 Hz, 1H), 7.69 (d, J = 8.4 Hz, 2H), 7.52-7.40 (m, 3H), 6.92 (t, J = 7.6 Hz, 1H), 2.70-2.57 (m, 4H), 2.29-2.20 (m, 1H), 1.90-1.80 (m, 1H); LCMS: m/z 433 [M + H]+. Calculated elemental analysis (C29H27ON7-3.06HCl-0.01C4H8O2-0.03C4H10O): C 59.61, H 5.28, N 15.36; measured values: C 59.62, H 5.05, N 15.36.
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Yield: 4.032 g
Reaction Conditions:
with hydrogenchloride in 1,4-dioxane;dichloromethane at 20; for 2.5 h;
Steps:
1.4 Step 4 3-(3-(4-(1-aminocyclobutyl)phenyl)-5-phenyl-3H-imidazo[4,5-b]pyridin-2-yl)pyridin-2-amine hydrochloride
Step 4 3-(3-(4-(1-aminocyclobutyl)phenyl)-5-phenyl-3H-imidazo[4,5-b]pyridin-2-yl)pyridin-2-amine hydrochloride
To a solution of tert-butyl (1-(4-(2-(2-aminopyridin-3-yl)-5-phenyl-3H-imidazo[4,5-b]pyridin-3-yl)phenyl)cyclobutyl)carbamate (4.1 g) in dichloromethane (100 mL) was slowly added 4.0 M HCl in dioxane (20 mL). The reaction was allowed to stir at room temperature for 2.5 hours. Upon completion of the reaction, ether (50 mL) was added to the suspension and the solid was filtered to give product (4.032 g) as a white solid. 1H NMR (DMSO-d6) 400 MHz δ: 8.94 (s, 3H), 8.47 (bs, 1H) 8.38 (d, J=8.8 Hz, 1H), 8.19-8.15 (m, 1H), 8.10-8.03 (m, 3H), 7.93-7.88 (m, 1H), 7.76 (d, J=8.4 Hz, 1H), 7.69 (d, J=8.4 Hz, 2H), 7.52-7.40 (m, 3H), 6.92 (t, J=7.6 Hz, 1H), 2.70-2.57 (m, 4H), 2.29-2.20 (m, 1H), 1.90-1.80 (m, 1H); LCMS: 433 [M+H]. Calc. for C29H27ON7 3.06 hydrochloric acid 0.01 dioxane 0.03 diethylether: C59.61, H5.28, N15.36. Found C59.62, H5.05, N15.36.
References:
Arqule, Inc.;Dransfield, Daniel T.;Eathiraj, Sudharshan;Lapierre, Jean-Marc;Schwartz, Brian;Yu, Yi US2016/67260, 2016, A1 Location in patent:Paragraph 0284