Synthesis of N-Acyl-5-aminopenta-2,4-dienals via Base-Induced Ring-Opening of N-Acylated Furfurylamines: Scope and Limitations
摘要:
N-Acylation of furfurylamines provided 1, which on double deprotonation with LDA led to the formation of N-acyl-5-aminopenta-2,4-dienals 2 via an isomerization involving opening of the furan ring. The scope and limitations of the procedure were examined by considering the influence of substituents on the carbonyl group and also on the heterocycle moiety. The efficacy of the reaction was shown to be very dependent on the nature of these groups.
开发了一种简单的一锅法,以合理的产率合成吡咯并[1,2- x ] [1,4]二氮杂ze酮。该方法基于容易获得的N- Boc氨基酸与生物质衍生的含氨基烷基的呋喃的缩合,然后进行脱保护,呋喃开环和Paal-Knorr环化。使用这种方法,我们从糠胺和β-氨基酸和吡咯并[1,2- d ] [1,4]二氮杂合成了吡咯并[1,2- a ] [1,4]二氮杂-3(2 H)-来自2-(2-呋喃基)乙胺和α-氨基酸的-4(5 H)-1。研究了合成的吡咯并二氮杂酮的细胞毒性。
Three-component synthesis of amidomethylarenes and -heteroarenes over Hβ zeolite under solvent-free conditions
作者:Durgaiah Chevella、Naresh Mameda、Srujana Kodumuri、Rammurthy Banothu、Krishna Sai Gajula、Boris Ivanovich Kutepov、Narender Nama
DOI:10.1016/j.catcom.2017.11.002
日期:2018.2
A highly efficient and eco-friendly protocol has been described for the synthesis of amidomethylarenes and -heteroarenes via one-pot three-component coupling reaction of amides, aldehydes and (hetero)arenes over a heterogeneous catalyst (Hβ zeolite) in solvent-free conditions. The scope and limitations of this catalytic process are demonstrated with various amides and arenes and the corresponding amidoalkylated