and bisaryne equivalents have been increasingly used as privileged building blocks for the synthesis of polycyclic aromatic hydrocarbons (PAHs). Here we report the synthesis and reactivity of an efficient precursor of the 2,6,10-triphenylenotriyne synthon, which constitutes the best example to date of a trisaryne equivalent on a benzofused polyaromatic core.
by sequential benzyne generation and reaction with arynophiles. The key features of this method include the chemoselective generation of two triple bonds in a single benzene ring under fluoride-mediated mild conditions, and the regiocontrol of each benzynereaction by the substituent next to the triple bond. This method produced various benzo-fused heteroaromatic compounds via reactions with arynophiles
The synthesis of a threefold symmetric nanographene with 19 cata‐fused benzene rings distributed within six branches is reported. This flat dendritic starphene, which is the largest unsubstituted cata‐condensed PAH that has been obtained to date, was prepared in solution by means of a palladium‐catalyzed aryne cyclotrimerization reaction and it was characterized on surface by scanning probe microscopy
Preparative successive generation of dehydrobenzene intermediate from 2,5-Bis(trimethylsilyl)-1,4-phenylene bis(trifluoromethanesulfonate) and its cycloaddition reactions
作者:M. Yu. Seliverstov、O. I. Afanas’ev、S. E. Sosonyuk、V. V. Temnov、M. V. Proskurnina、N. S. Zefirov
DOI:10.1134/s0012500816020063
日期:2016.2
Abstract A method of preparative successive cycloaddition to synthetic equivalent of bis(dehydrobenzene) was found. Monoaddition products were isolated and characterized.
摘要 发现了一种制备双(脱氢苯)等价物连续环加成的方法。分离和表征单加成产物。
Synthesis and Characterization of a Pentiptycene‐Derived Dual Oligoparaphenylene Nanohoop
nanohoops with other functional organic building blocks should lead to novel molecular architectures with intriguing properties. Herein, we describe the synthesis of a pentiptycene‐derived chiral dual nanohoop molecule with key steps including ring expansion through dianthracene cycloreversion and transannular [4+2] cycloaddition across a 64‐membered macrocycle. The crystal structure of the nanohoop molecule