Stereoselective multicomponent synthesis of (2RS,6SR)-2,6-diaryl-3,3,5,5-tetracyanopiperidines
作者:A. N. Vereshchagin、K. A. Karpenko、M. N. Elinson、S. V. Gorbunov、Yu. E. Anisina、M. P. Egorov
DOI:10.1007/s11172-018-2252-y
日期:2018.8
Multicomponent reaction between alkylidenemalononitriles, formaldehyde, and ammonium acetate upon reflux in alcohols gives stereoselectively 2,6-diaryl-3,3,5,5-tetracyanopiperidines in 65—92% yields. In this process, ammonium acetate acts as both a catalyst and a source of nitrogen for the piperidine ring.
亚烷基丙二腈、甲醛和乙酸铵在醇中回流时发生多组分反应,立体选择性地生成 2,6-二芳基-3,3,5,5-四氰基哌啶,产率 65-92%。在这个过程中,醋酸铵既是催化剂,又是哌啶环的氮源。