double bond involved thermal 6π‐azaelectrocyclization and, on this basis, a one‐step synthesis of triazacoronenes (TACs) from triphenylene‐1,5,9‐triamines and aldehydes under nonacidic conditions. This method has several advantages such as simplicity, high yields, and extensive substrate scope. A plausible reaction mechanism has been proposed with several experimental supports. A typical derivative
We are family: Triazacoronene derivatives have been synthesized in four steps from veratrole by using a threefoldPictet–Spenglerreaction as the key step (see picture). They have good photophysical and electronical properties, thermal stability, and solubility, thus rendering them promising candidates as electron‐transport materials.
New π-extended triazacoronene derivatives containing three peri-benzopyrano extensions were successfully synthesized through tandem triflic acid catalyzed threefold Pictet–Spengler cyclization and K2CO3-catalyzed ipso-aromatic substitution in one pot. The structure was verified by X-ray diffraction analysis and was found to form a sandwich-type π trimer in the crystalline state. The π-extended triazacoronenes
A straightforward synthesis and physicochemical properties of chiral phosphorus-doped coronenes
作者:Xuexiang Li、Jia Li、Xingchen Li、Rui Dang、Zhihao Li、Ying Li、Biyao Wang
DOI:10.1039/d3cc03768a
日期:——
Novel N,P-fused coronene derivatives have been successfully designed and achieved in one step using a three-fold Bischler–Napieralski cyclization as the key step. The unique structure, and tunable photophysical and electronic properties make them promising candidates for emissive and electron-transport materials.