Synthesis of Tetrahydronaphthyridines from Aldehydes and HARP Reagents via Radical Pictet–Spengler Reactions
作者:Moritz K. Jackl、Imants Kreituss、Jeffrey W. Bode
DOI:10.1021/acs.orglett.6b00523
日期:2016.4.15
with newly designed HARP (halogen amine radical protocol) reagents gives access to α-substituted tetrahydronaphthyridines. By using different HARP reagents, various regioisomeric structures can be prepared in a single operation. These products, which are of high value in medicinal chemistry, are formed in a predictable manner via a formal Pictet–Spenglerreaction of electron-poor pyridines that would