Downstream synthetic route of 21043-40-3

The synthetic route of 21043-40-3 has been constantly updated, and we look forward to future research findings.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.21043-40-3,1-Cyclopentylpiperazine,as a common compound, the synthetic route is as follows.

300 mg (0.86 mmol) der Verbindung aus Beispiel XVI werden in 8 ml 2-Ethyl-1- hexanol suspendiert und mit 266 mg (1.73 mmol) 1-Cyclopentylpiperazin und 0.75 ml (4.31 mmol) N, N-Diisopropylethylamin versetzt. Es wird ueber Nacht bei [150C] geruehrt. Nach dem Abkuehlen wird die Reaktionsloesung ueber eine MPLC gereinigt (Laufmittel : Dichlormethan-Methanol 10 : 1 + [1%] konzentrierter Ammo- niakloesung). Es werden 216 mg (52 % d. Th. ) Produkt erhalten. ‘H-NMR (400 MHz, DMSO-d6) : [8] [=] 1.28-1. 41 (m, 2H), 1.44-1. 55 (m, 2H), 1.57- 1.68 (m, 2H), 1.70-1. 85 (m, 2H), 2.43 (br. s, [5H),] 3.41 (br. s, 4H), 5.39 (s, 1H), 6.04 br. s, 2H), 6.97 (d, [2H),] 7.36 (dd, 1H), 7.45 (t, 1H), 8.23 (dd, 1H), 8.34 (d, 2H), 9.28 (s, [1H)] LC-MS (Methode 7) : [RT =] 2. [38] min MS (ESIpos) : [M/Z =] 466 [(M+H) +], 21043-40-3

The synthetic route of 21043-40-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BAYER AKTIENGESELLSCHAFT; WO2003/106450; (2003); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics