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