Efficient Synthesis and Characterization of Dibenzo[a,m]rubicenes and Tetrabenzo[a,f,r,m]rubicenes
摘要:
We report an efficient synthesis of dibenzo[a,m]rubicenes and tetrabenzo[a,f,r,m]rubicenes involving ICL-mediated benzannulation of 1,4-diphenyl-2,5-dialkynylbenzene 5 as the key step. Preliminary data on the photophysical properties of these new indeno-PAHs are reported.
Efficient Synthesis and Characterization of Dibenzo[a,m]rubicenes and Tetrabenzo[a,f,r,m]rubicenes
摘要:
We report an efficient synthesis of dibenzo[a,m]rubicenes and tetrabenzo[a,f,r,m]rubicenes involving ICL-mediated benzannulation of 1,4-diphenyl-2,5-dialkynylbenzene 5 as the key step. Preliminary data on the photophysical properties of these new indeno-PAHs are reported.
Accessing extended and partially fused hexabenzocoronenes using a benzannulation–cyclodehydrogenation approach
作者:Hasan Arslan、Fernando J. Uribe-Romo、Brian J. Smith、William R. Dichtel
DOI:10.1039/c3sc51212f
日期:——
sequential benzannulation and cyclodehydrogenation (Scholl oxidation) of simple diaryl alkynes. The benzannulation reaction proceeds efficiently on highly congested substrates and with complete regioselectivity. Scholl oxidation of the resulting oligo(arylene)s proceeds without rearrangements and provides either fully fused or specific partially fused polycyclic aromatic hydrocarbon products. The partially