Diels-Alder Reaction of 1,2,3-Triazine with Aldehyde Enamine
摘要:
The Diels-Alder reaction of 4-methyl-1,2,3-triazine with several aldehyde enamines was carried out to afford 2,5-disubstituted pyridines. As an application of this method, we accomplished the synthesis of alkaloid, fusaric acid.
Exploiting Synergistic Catalysis for an Ambient Temperature Photocycloaddition to Pyrazoles
作者:Christopher P. Lakeland、David W. Watson、Joseph P. A. Harrity
DOI:10.1002/chem.201904210
日期:2020.1.2
Sydnone-based cycloaddition reactions are a versatile platform for pyrazole synthesis, however they operate under harsh conditions (high temperature and long reaction times). Herein we report a strategy that addresses this limitation utilizing the synergistic combination of organocatalysis and visible-light photocatalysis. This new approach proceeds under ambient conditions and with excellent levels
Preparation of 2-chloropyridine 3-carboxylic acid esters
申请人:Shell Internationale Research Maatschappij, B.V.
公开号:US04987232A1
公开(公告)日:1991-01-22
2-chloropyridine 3-carboxylic acid esters are prepared by cyclization of 1,3-butadiene derivatives in the presence of hydrogen chloride.
2-氯吡啶-3-羧酸酯是在氯化氢存在下,通过1,3-丁二烯衍生物的环化制备的。
The Tunable Photophysical Properties of Enamine Intermediates Involved in Light-Driven Aminocatalysis
作者:Katrina Bergmann、Rebecca L. Davis
DOI:10.1021/acs.orglett.1c02387
日期:2021.9.17
<i>Anti</i>-Selective Organocatalytic Michael Addition between Phenylacetaldehyde and Nitrostyrene
作者:Lucía Gandolfi Donadío、Mariana A. Galetti、Gianluca Giorgi、Marcello Rasparini、Maria J. Comin
DOI:10.1021/acs.joc.6b01061
日期:2016.9.2
Using the reaction between phenylacetaldehyde and nitrostyrene catalyzed by pyrrolidine as a simple model, we have studied the diastereochemical outcome of the organocatalytic Michael reactions between benzylicaldehydes and nitrostyrenes. We found that the anti adduct was obtained in high yield and diastereoselection as was demonstrated by the X-ray structure of the product. In situ NMR studies showed
Diels-Alder Reaction of 1,2,3-Triazine with Aldehyde Enamine
作者:Junko Koyama、Tamaki Ogura、Kiyoshi Tagahara
DOI:10.3987/com-94-6727
日期:——
The Diels-Alder reaction of 4-methyl-1,2,3-triazine with several aldehyde enamines was carried out to afford 2,5-disubstituted pyridines. As an application of this method, we accomplished the synthesis of alkaloid, fusaric acid.