With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.129779-30-2,(3R,5S)-rel-tert-Butyl 3,5-dimethylpiperazine-1-carboxylate,as a common compound, the synthetic route is as follows.
The 5 – ((2,4-dioxo -3,4-dihydrochinazolines having antiviral properties -1 (2H)-yl) methyl) – 2-fluoro-benzoic acid (100 mg, 0 . 16mmol), EDCI (124 mg, 0 . 64mmol), HOBt (88 mg, 0 . 64mmol) and TEA (66 mg, 0 . 64mmol) into the reaction bottle in, addition of about 2 ml of the dissolution of water-free DMF, r.t. The lower stirring 60 min, then dropwise (3S, 5R) – 3,5-dimethyl piperazine-1-carboxylic acid T-butyl ester (104 mg, 0 . 48mmol) in the DMF solution to the reaction solution, r.t. The lower stirring overnight, the reaction solution is poured into 100 ml water, using 100mLDCM extraction, an organic layer for sequentially 1MHCl (100 ml), saturated NaCl (100 ml) and water (100 ml) washing, vacuum concentration, silica gel column chromatography, to obtain 59 mg solid, yield 36.3%.
129779-30-2, 129779-30-2 (3R,5S)-rel-tert-Butyl 3,5-dimethylpiperazine-1-carboxylate 10822535, apiperazines compound, is more and more widely used in various fields.
Reference£º
Patent; Institute Of Materia Medica Chinese Academy Of Medical Sciences; Xu, Bailing; Chen, Xiaoguang; Yao, Haiping; Ji, Ming; Jin, Jing; Zhou, Jie; Wang, Ke; Zhao, Dalong; (55 pag.)CN105461697; (2016); A;,
Piperazine – Wikipedia
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