| Autor: |
Yerrabelly, Jayaprakash Rao, Porala, Subbanarasimhulu, Kasireddy, Venkateshwar Reddy, Ghojala, Venkat Reddy, Rebelli, Pradeep |
| Rok vydání: |
2021 |
| DOI: |
10.6084/m9.figshare.16866143.v1 |
| Popis: |
A variety of new pentacyclic dichromenopyridines have been synthesized from 2-amino chromone and O-propargyloxy salicilaldehydes through intramolecular Povarov reaction using CuI/Cu(OSO2CF3)2 as a Lewis acid catalyst. The dichromenopyridines synthesis involve two sequential steps, insitu N-heteryl aldimine formation and an intramolecular Aza Diels-Alder[4 + 2] cycloaddition. Furthermore the key intermediate, terminal alkyne tethered Schiff bases subjected to Cu(I) mediated click [3 + 2] cycloaddition with thiazole appended azide to afford imine linked chromone-1,2,3-triazole -thiazole tri heterocyclic molecular hybrids. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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