本文报道了[ n ]环对亚苯基(CPP)的溴化。较小的[ n ] CPPs(n <8)进行了高位点的双溴加成反应,以中等至极好的收率生产四溴加合物。理论计算表明,热力学稳定性决定了反应的反应性和位点选择性。通过FeBr 3催化的位点选择性溴化反应将加成产物进一步转化为八溴代产物。然后将四溴和八溴加合物转化为单溴到四溴CPP,然后再将其转化为几种CPP衍生物。因此,溴化和随后的转化为CPP的后期功能化提供了一条途径。
A Macrocyclic Gold(I)–Biphenylene Complex: Triangular Molecular Structure with Twisted Au
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(diphosphine) Corners and Reductive Elimination of [6]Cycloparaphenylene
AbstractThe digold(I) complex [Au2Cl2(Cy2PCH2PCy2)] reacts with 4,4′‐diphenylene diboronic acid to form a triangular macrocyclic complex with twisted Au‐P‐C‐P‐Au groups at the three corners. The synthesis of the complex and its chemical oxidation produced [6]cycloparaphenylene ([6]CPP) in 59 % overall yield.
The selectivesynthesis of [6]-, [8]-, and [10]cycloparaphenylenes (CPPs) was achieved by a new synthetic route involving Ni(0)-mediated coupling of bis(para-haloaryl)dinuclear arylplatinum complex...
[EN] [N]CYCLOPARAPHENYLENES (CPP), [N]MACROCYCLE INTERMEDIATES AND METHODS OF MAKING SAME<br/>[FR] [N]CYCLOPARAPHÉNYLÈNES (CPP), [N]MACROCYCLES INTERMÉDIAIRES ET PROCÉDÉS DE FABRICATION ASSOCIÉS
申请人:UNIV BOSTON
公开号:WO2013112493A1
公开(公告)日:2013-08-01
The present invention provides the compound [6]-cycloparaphenylene, cycloparaphenylene intermediates (e.g. [n]macrocycles), and methods for making [n]cycloparaphenylenes and [n]cycloparaphenylene intermediates in quantities not previously available. The cycloparaphenylene compounds and their intermediates can be useful in nanotube preparation and in the preparation of other supramolecular structures.
carbon–carbon (C−C) bond activation of [n]cycloparaphenylenes ([n]CPPs) by a transition‐metal complex is herein reported. The Pt0 complex Pt(PPh3)4 regioselectively cleaves two C−C σ bonds of [5] CPP and [6]CPP to give cyclic dinuclear platinum complexes in high yields. Theoretical calculations reveal that the relief of ring strain drives the reaction. The cyclic complex was further transformed into a cyclic
本文报道了过渡金属络合物对[ n ]环对亚苯基([ n ] CPPs)的碳-碳(CC )键活化作用。Pt 0络合物Pt(PPh 3)4区域选择性地裂解[5] CPP和[6] CPP的两个Cσ键,从而以高收率得到环状双核铂络合物。理论计算表明,环应力的释放驱动了反应。通过使用CO插入反应将环状配合物进一步转化为环状二酮。
Highly strained [6]cycloparaphenylene: crystallization of an unsolvated polymorph and the first mono- and dianions
作者:Sarah N. Spisak、Zheng Wei、Evan Darzi、Ramesh Jasti、Marina A. Petrukhina
DOI:10.1039/c8cc03693d
日期:——
individual molecules that minimizes empty internal space. The controlled chemical reduction of this highly strained nanohoop with Group 1 metals resulted in the first isolation and structuralcharacterization of its mono- and dianions, allowing for the evaluation of core transformations for the series ranging from 10 to 11− and 12−.