122833-04-9 2-Methoxy-4-(4-methylpiperazin-1-yl)aniline 20136253, apiperazines compound, is more and more widely used in various fields.
With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.122833-04-9,2-Methoxy-4-(4-methylpiperazin-1-yl)aniline,as a common compound, the synthetic route is as follows.
To a solution of Int-14 (100 mg, 0.335 mmol) and 2-methoxy-4-(4-methylpiperazin-l-yl)aniline (82 mg, 0.369 mmol) in 2- methoxyethanol (2 mL) was added 4 M HC1 in dioxane (0.086 mL, 0.343 mmol). The solution was stirred and heated at 110 C for 14 h. Then, additional 2-methoxy-4-(4-methylpiperazin-l- yl)aniline (40 mg, 0.180 mmol) and 1 drop of 4 M HC1 (aq) were added and the mixture was further irradiated under microwave conditions for 15 minutes at 160 C. Work up in the same way as Ex-20 provided the title compound as a light brown foam (97 mg, 60%). HPLC: 99% [tR = 8.7 min, 45% MeOH, 55% water (with 0.1% TFA), 20 min. NMR (400 MHz, DMSO-ifc): delta 7.83 (d, J = 8.8 Hz, 1H), 7.82 (s, 1H), 7.42 (s, 1H, disappeared on D20 shake), 7.18 (ddd, J = 8.2, 7.4, 1.7 Hz, 1H), 7.14 (t, / = 6.3 Hz, 1H, reduced by 50% on D20 shake), 7.07 (dd, / = 7.4, 1.7 Hz, 1H), 6.94 (dd, / = 8.2, 0.9 Hz, 1H), 6.85 (td, / = 7.4, 0.9 Hz, 1H), 6.60 (d, / = 2.5 Hz, 1H), 6.34 (dd, / = 8.8, 2.5 Hz, 1H), 3.79 (s, 3H), 3.76 (s, 3H), 3.50 (q, / = 6.3 Hz, 2H), 3.10- 3.03 (m, 4H), 2.82 (t, / = 6.3 Hz, 2H), 2.47-2.41 (m, 4H), 2.21 (s, 3H). HPLC-MS (ESI+): m/z 483.3 [50%, (M35C1+H)+], 242.2 [100%, (M35C1+2H)2+]. LC-MS (ESI+): 483.2 [100%, (M35C1+H)+]. HRMS (ESI+): m/z calcd for C25H31CI2N6O2 (M+H)+ 483.2270, found 483.2272., 122833-04-9
122833-04-9 2-Methoxy-4-(4-methylpiperazin-1-yl)aniline 20136253, apiperazines compound, is more and more widely used in various fields.
Reference£º
Patent; H. LEE MOFFITT CANCER CENTER & RESEARCH INSTITUTE; MAHAJAN, Nupam P.; MAHAJAN, Kiran N.; LAWRENCE, Nicholas J.; LAWRENCE, Hirshani R.; (85 pag.)WO2017/23899; (2017); A1;,
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