Reference of 480452-05-9,Some common heterocyclic compound, 480452-05-9, name is N-Boc-2-methyl-1,3-propanediamine, molecular formula is C9H20N2O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
(Step 1) A solution of tert-butyl (3-amino-2-methylpropyl)carbamate (200 mg, 1.06 mmol), 4-cyanobenzoic acid (156 mg, 1.06 mmol), HATU (525 mg,1.38 mmol) and TEA (0.444 mL, 3.19 mmol) in DMF (5 mL) was stirred at room temperature for 16 hr. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was dried, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (solvent gradient; 10 to 50% ethyl acetate/hexane) to give tert-butyl (3-(4-cyanobenzamido)-2-methylpropyl)carbamate (311 mg, 0.980 mmol, 92%) as a white powder. 1H-NMR(300MHz,CDCl3) :delta0.83(3H,d,J=6.8Hz), 1.37(9H,s), 1.74-1.93(1H,m), 2.76-3.00(2H,m), 3.05-3.25(2H,m), 6.82(1H,t,J=5.7Hz), 7.93-8.02(4H,m), 8.65(1H,t,J=5.5Hz)
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route N-Boc-2-methyl-1,3-propanediamine, its application will become more common.
Reference:
Patent; Takeda Pharmaceutical Company Limited; YAMAMOTO, Satoshi; SHIRAI, Junya; FUKASE, Yoshiyuki; TOMATA, Yoshihide; SATO, Ayumu; OCHIDA, Atsuko; YONEMORI, Kazuko; NAKAGAWA, Hideyuki; EP2759533; (2014); A1;,
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