With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.259808-67-8,1-Boc-3,3-Dimethylpiperazine,as a common compound, the synthetic route is as follows.
The product was prepared according to General Procedure 1 using 8-tert-butyl- 6-(4,4-difluorocyclohexyl)imidazo [1 ,2-b]pyridazine-2-carboxylic acid (500 mg, 1.482 mmol), DMF (10 mL), HATU (845.3 mg, 2.223 mmol), Huenig?s base (775 tL, 4.449 mmol) and tert-butyl 3,3-dimethylpiperazine-1-carboxylate (476.4 mg, 2.223 mmol Purification by flash chromatography on silica gel was carried out under standard condition to afford title compound tert-butyl 4-[8-tert-butyl-6-(4,4-difluorocyclohexyl)imidazo [1 ,2-b]pyridazine-2- carbonyl]-3,3-dimethyl-piperazine-1-carboxylate (766 mg, 1.435 mmol, 96.85%) as a white solid. ?H NMR (400 MHz, Chloroform-cl) oe 8.23 (s, 1H), 6.72 (s, 1H), 4.31 (t, J= 6.3 Hz, 2H), 3.68-3.34 (m, 4H), 2.81 (t, J= 10.9 Hz, 1H), 2.24 (dt, J= 12.3, 7.2 Hz, 2H), 2.12 -1.72 (m, 6H), 1.59 (s, 6H), 1.52 (t, J= 1.9 Hz, 9H), 1.47 (d, J= 1.7 Hz, 9H). LC-MS: 534.26 (M+Hj., 259808-67-8
259808-67-8 1-Boc-3,3-Dimethylpiperazine 22710387, apiperazines compound, is more and more widely used in various fields.
Reference£º
Patent; VERTEX PHARMACEUTICALS INCORPORATED; FARMER, Luc J.; FOURNIER, Pierre-Andre; LESSARD, Stephanie; LIU, Bingcan; ST-ONGE, Miguel; STURINO, Claudio; SZYCHOWSKI, Janek; YANNOPOULOS, Constantin; WO2015/48245; (2015); A1;,
Piperazine – Wikipedia
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