Robuta

https://journal.hep.com.cn/jocsu/EN/10.1007/s11771-000-0037-5 Synthesis of cyclopropylamine with phase transfer catalysis Cyclopropylamine is synthesized with γ-butyrolactone and isopropanol by five steps of ring-opening esterification, cyclization, hydrolysis, acylation and... phase transfer catalysissynthesiscyclopropylamine