With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.184637-48-7,tert-Butyl 3-aminopiperidine-1-carboxylate,as a common compound, the synthetic route is as follows.,184637-48-7
[00585] To a stuffed solution of 2-[4-(3-fluoro-phenoxy)-phenoxy]-5-iodo-nicotinic acid methyl ester (1.50 g; 2.77 mmol; 1.00 eq.) in 1,4-dioxane (30.00 ml; 20.00 V) were added piperidin-3-yl-carbamic acid tert-butyl ester (0.72 g; 3.33 mmol; 1.20 eq.) and cesium carbonate (1.86 g; 5.55 mmol; 2.00 eq.) at RT under nitrogen atmosphere. The resulting reaction mixture was degassed with nitrogen for 20 mm and then treated with dicyclohexyl-(2?,6?-diisopropoxy-biphenyl-2-yl)-phosphane (0.07 g; 0.14 mmol; 0.05 eq.) andtris(dibenzylideneacetone)dipalladium(0) (0.26 g; 0.28 mmol; 0.10 eq.). The reaction mixture was heated in a sealed tube to 100 C for 16 h. Upon completion of the reaction (monitored by TLC), the reaction mixture was cooled to RT and filtered through Celite. The Celite was washed with EtOAc (50 mL). The filtrate was washed with water (lx 50 mL) and brine (1 x 20 mL), dried over sodium sulphate and concentrated under vacuum. The residue was purified by column chromatograpy over silica gel (60-120 mesh) by using (3:7) EtoAc:Pet ether as an eluent to afford tert-butoxycarbonylamino-6?- [4-(3-fluoro-phenoxy)-phenoxy] -3,4,5 ,6-tetrahydro-2H- [1,3?] bipyridinyl-5?-carboxylic acid methyl ester (1.20 g, 60.3 %) as a yellow solid. HPLC: 74.91 % purity. MS m/z = 538 [M+H]. ?H NMR (400 MHz, DMSO-d6) oe 8.04-8.02 (d, J= 4.3 Hz, 2H), 7.77-7.76 (d, J= 3.1 Hz, 1H), 7.43-7.37 (m, 1H), 7.09-7.06 (m, 4H), 6.97-6.91 (m, 2H), 6.86-6.79 (m, 2H), 3.8 (s, 3H), 3.54-3.48 (m, 3H), 2.74-2.59 (m, 2H), 1.8 1-1.72 (m, 1H), 1.6 (s, 1H),1.4 (s, 9H).
184637-48-7 tert-Butyl 3-aminopiperidine-1-carboxylate 545809, apiperidines compound, is more and more widely used in various fields.
Reference£º
Patent; MERCK PATENT GMBH; QIU, Hui; CALDWELL, Richard D.; NEAGU, Constantin; MOCHALKIN, Igor; LIU-BUJALSKI, Lesley; JONES, Reinaldo; TATE, Devon; JOHNSON, Theresa L.; GARDBERG, Anna; WO2015/61247; (2015); A2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem