Carbon Radical Attack on a Pyrimidine Nitrogen. An Unusual Entry into Polycyclic Aminopyrimidones
摘要:
Unprecedented examples of a synthetically useful radical ring closure onto a pyrimidine nitrogen leading to novel, highly functionalized bi- and tricyclic pyrimidone structures are reported. An unexpected hydrogen atom translocation prior to the cyclization step was observed in some cases.
Verfahren zur Stabilisierung und/oder Senkung der Farbzahl von Alkenylverbindungen
申请人:BASF AKTIENGESELLSCHAFT
公开号:EP1223161A2
公开(公告)日:2002-07-17
Verfahren zur Stabilisierung und/oder Senkung der Farbzahl von Alkenylverbindungen mit einem zwei- oder dreibindigen Heteroatom in α-Stellung zur Doppelbindung, bei dem man die Alkenylverbindungen mit einem Oxidationsmittel versetzt.
作者:Dhananjayan Vasu、Angel L. Fuentes de Arriba、Jamie A. Leitch、Antoine de Gombert、Darren J. Dixon
DOI:10.1039/c8sc05164j
日期:——
A quinone-mediated general synthetic platform for the construction of primary α-tertiary amines from abundant primary α-branched amine starting materials is described. This procedure pivots on the efficient in situ generation of reactive ketimine intermediates and subsequent reaction with carbon-centered nucleophiles such as organomagnesium and organolithium reagents, and TMSCN, creating quaternary
描述了一种醌介导的通用合成平台,用于从丰富的伯 α-支化胺起始材料构建伯 α-叔胺。该过程的重点是有效地原位生成反应性酮亚胺中间体,并随后与碳中心亲核试剂(例如有机镁和有机锂试剂以及 TMSCN)反应,产生四元中心。此外,扩展到反极性光氧化还原催化可以通过亲核α-氨基自由基中间体与亲电子试剂发生反应。这种高效、广泛适用且可扩展的胺对胺合成平台已成功应用于库和 API 合成以及药物分子的功能化。
Carbon Radical Attack on a Pyrimidine Nitrogen. An Unusual Entry into Polycyclic Aminopyrimidones
作者:Ling Qin、Zhibo Liu、Samir Z. Zard
DOI:10.1021/ol501104h
日期:2014.6.6
Unprecedented examples of a synthetically useful radical ring closure onto a pyrimidine nitrogen leading to novel, highly functionalized bi- and tricyclic pyrimidone structures are reported. An unexpected hydrogen atom translocation prior to the cyclization step was observed in some cases.