With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.196811-66-2,tert-Butyl 4-carbamothioylpiperazine-1-carboxylate,as a common compound, the synthetic route is as follows.
To a stirred solution of tert-butyl 4-carbamothioylpiperazine-1-carboxylate (synthesized according to Example 5, Step 1, 1.31 g, 5.36 mmol) in isopropanol (15 mL), tert-butyl 3-bromo-2,4-dioxopiperidine-1-carboxylate obtained in the first step (1.3 g, 4.46 mmol) was added at rt. The reaction mixture was stirred overnight at 90 C. It was cooleddown to rt and evaporated under reduced pressure. Water (10 mL) was added and the desired product was extracted with diethyl ether (2 x 30 mL), dried over Na2504 and concentrated, affording the title product. Yield: 74% (1.42 g, yellow solid). LCMS:(Method A) 239.0 (M-Boc+H), Rt. 0.70 mm, 48.39% (Max).
196811-66-2, The synthetic route of 196811-66-2 has been constantly updated, and we look forward to future research findings.
Reference：
Patent; ASCENEURON S. A.; QUATTROPANI, Anna; KULKARNI, Santosh, S.; GIRI, Awadut Gajendra; TORONTO, Dawn, V.; CROWE, David, Malcolm; (150 pag.)WO2017/144637; (2017); A1;,
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