Synthesis of carbazole derived aza[7]helicenes

Add time:09/05/2019    Source:sciencedirect.com

Synthesis of four derivatives of symmetrical aza[7]helicenes is achieved by I2-THF mediated photocyclization of corresponding bis-styryl derivatives. The cyclization furnished the desired angularly fused aza-helicene in moderate yields. The structures are established by NMR spectroscopy and single crystal X-ray analysis for the difluoro derivative. The series of synthesized aza[7]helicenes showed remarkable thermal stability as indicated by DSC analysis.

We also recommend Trading Suppliers and Manufacturers of 6-Methyl-1-aza-9H-carbazole (cas 108349-67-3). Pls Click Website Link as below: cas 108349-67-3 suppliers

Prev:Distribution of nutrient and toxic elements in brown and polished rice
Next:Approaches towards the stabilization of hemiaminal function at ornithine unit of Mulundocandin (cas 108351-20-8)☆)