Synthesis and photochromic properties of benzofuran–phenanthrene and benzofuran–pyrene hybrids
作者:H. Surya Prakash Rao、Satish Vijjapu
DOI:10.1039/c4ra02435d
日期:——
Iron(iii) chloride mediated condensation of phenanthrene-9,10-dione and pyrene-4,5-dione with cyclohexanone and its derivatives furnish benzofuran–phenanthrene and benzofuran–pyrene hybrids.
A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound having at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzothienobenzofuran skeleton is provided.
The synthesis of fused polycyclic heteroaromatics was achieved via successive vinylic/aromatic C−F bond activation. The Suzuki-Miyaura coupling of bromodifluoroalkenes with 2-hydroxy- or 2-aminophenylboronic acids (esters) followed by defluorinative 5-endo-trig cyclization afforded 2-fluorobenzoheteroles bearing a biaryl moiety in one-pot operation. Subsequent acid-mediated intramolecular C−F/C−H coupling