21043-40-3, 1-Cyclopentylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
General procedure: One-pot synthesis of N-(aminosulfonyl)-4-podophyllotoxin carbamates from PPT in the presence of CSI and amine via the Burgess-type intermediates.1 CSI (170 mg, 1.2 mmol) was added dropwise to a solution of PPT (500 mg, 1.2 mmol) in DCM (5 mL) at -10. The reaction mixture was stirred at -10 for 30 min. Pyridine (1.0 equiv) was then added dropwise to above mixture and stirred for another 1 h at -10. Followed amine (2.0 equiv) was added to the reaction mixture at -10. The reaction mixture was stirred for 2 h at -10, then stirred at room temperature until the reaction was finished. The reaction mixture was washed in order by distilled water and saturated brine, and then the extract was dried over MgSO4 and concentrated in vacuo. The residue was purified by silica gel column chromatography, using CH2Cl2/acetone as the eluent, to afford pure compounds 5-13.
21043-40-3, As the paragraph descriping shows that 21043-40-3 is playing an increasingly important role.
Reference：
Article; Xu, Xiao-Hui; Guan, Xiao-Wen; Feng, Shi-Liang; Ma, You-Zhen; Chen, Shi-Wu; Hui, Ling; Bioorganic and Medicinal Chemistry Letters; vol. 27; 13; (2017); p. 2890 – 2894;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics