Xiao Yonglong, Mague Joel T, Schmehl Russell H, Haque Farihah M, Pascal Robert A
Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA.
Angew Chem Int Ed Engl. 2019 Feb 25;58(9):2831-2833. doi: 10.1002/anie.201812418. Epub 2019 Feb 6.
Dodecaphenyltetracene (4), the largest perphenylacene yet prepared, was synthesized from known tetraphenylfuran, hexaphenylisobenzofuran, and 1,2,4,5-tetrabromo-3,6-diphenylbenzene in three steps. The X-ray structure of the deep red, highly luminescent 4 shows it to be a D -symmetric molecule with an end-to-end twist of 97°. The central acene is encapsulated by the peripheral phenyl substituents, and as a result, the molecule is relatively unreactive and even displays reversible electrochemical oxidation and reduction.
十二苯基并四苯（4）是迄今制备的最大的全苯基并苯，由已知的四苯基呋喃、六苯基异苯并呋喃和1,2,4,5-四溴-3,6-二苯基苯分三步合成。深红色、高发光性的4的X射线结构表明它是一个D对称分子，端到端扭转角度为97°。中心并苯被外围苯基取代基包裹，因此该分子相对不活泼，甚至显示出可逆的电化学氧化和还原。
