808-57-1Relevant articles and documents
Synthesis, structure and properties of C3-symmetric heterosuperbenzene with three BN units
Wang, Xiao-Ye,Zhuang, Fang-Dong,Wang, Xin-Chang,Cao, Xiao-Yu,Wang, Jie-Yu,Pei, Jian
, p. 4368 - 4371 (2015)
The parent skeleton of BN heterocoronene with three BN units and C3 symmetry was synthesized as a model compound of BN-doped graphene. Further investigation of this graphene-type molecule revealed the important role of BN doping in opening the
Synthesis and Complex Crystal Structure of C60 with Symmetrical Donor of 2,3,6,7,10,11-Hexamethoxytriphenylene (HMT)
Chiang, Long Y.,Swirczewski, John W.,Liang, Ken,Millar, J.
, p. 981 - 984 (1994)
We have successfully synthesized the complex of C60 fullerene with a three-fold symmetrical donor of 2,3,6,7,10,11-hexamethoxytriphenylene (HMT).All spectroscopic data, and analyses support the chemical composition of this complex as C60(HMT)2.Individually, each C60 fullerene sphere was found to be surrounded by four HMT molecules in distinctive tetrahedral arrangement.The closest distance from one C60 centroid to the next C60 centroid in the adjacent chain is 13.099 Angstroem.
Synthesis of Boroxine and Dioxaborole Covalent Organic Frameworks via Transesterification and Metathesis of Pinacol Boronates
Hamzehpoor, Ehsan,Jonderian, Antranik,McCalla, Eric,Perepichka, Dmitrii F.
supporting information, p. 13274 - 13280 (2021/09/07)
Boroxine and dioxaborole are the first and some of the most studied synthons of covalent organic frameworks (COFs). Despite their wide application in the design of functional COFs over the last 15 years, their synthesis still relies on the original Yaghi's condensation of boronic acids (with itself or with polyfunctional catechols), some of which are difficult to prepare, poorly soluble, or unstable in the presence of water. Here, we propose a new synthetic approach to boroxine COFs (on the basis of the transesterification of pinacol aryl boronates (aryl-Bpins) with methyl boronic acid (MBA) and dioxaborole COFs (through the metathesis of pinacol boronates with MBA-protected catechols). The aryl-Bpin and MBA-protected catechols are easy to purify, highly soluble, and bench-stable. Furthermore, the kinetic analysis of the two model reactions reveals high reversibility (Keq ~1) and facile control over the equilibrium. Unlike the conventional condensation, which forms water as a byproduct, the byproduct of the metathesis (MBA pinacolate) allows for easy kinetic measurements of the COF formation by conventional 1H NMR. We show the generality of this approach by the synthesis of seven known boroxine/dioxaborole COFs whose crystallinity is better or equal to those reported by conventional condensation. We also apply metathesis polymerization to obtain two new COFs, Py4THB and B2HHTP, whose synthesis was previously precluded by the insolubility and hydrolytic instability, respectively, of the boronic acid precursors.
A 6π Azaelectrocyclization Strategy towards the 1,5,9-Triazacoronenes
Li, Jing,Shen, Guo-Dong,Sun, Hua-Ming,Sun, Yi-Xun,Wang, Xiao-Gang,Wei, Jun-Fa,Yang, Ming-Yu,Yang, Tian,Yang, Yi-Hui
supporting information, p. 1651 - 1656 (2020/01/25)
We present the instance of two aromatic double bonds and an imine 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 cond