Nickel-Catalyzed, Cascade Cycloadditions of 1-Ethynyl-8-halonaphthalenes with Nitriles: Synthesis, Structure, and Physical Properties of New Pyrroloarenes
The reaction of 1‐ethynyl‐8‐halonaphthalenes 1 with nitriles in the presence of the catalytic system [NiBr2(dppe)]/Zn (dppe=1,2‐bis(diphenylphosphino)ethane) is found to produce unusual pyrroloarenes 2. The carbon–nitrogentriplebond in nitrile is activated twice, and five new bonds are formed in a one‐pot transformation, which causes a pyrrole and two six‐membered rings to be generated simultaneously
On the Purported Structure of Cyclodeca[1,2,3-de: 6,7,8-d?e?]dinaphthalene
作者:Rolf Gleiter、Hans Peter Schaaff、Hans Rodewald、Reiner Jahn、Hermann Irngartinger
DOI:10.1002/hlca.19870700228
日期:1987.3.18
three main products 8–10. The spectroscopic data of 8 were identical to those which led Mithcell and Sondheimer to assign them to cyclodeca[1,2,3-de: 6,7,8-d′e′]dinaphthalene (3). Our investigations show, however, that the correct structural assignment leads to the structure of 7,7a-dihydrodibenzo[de,mn]naphthacene (8).
双反应(锍盐)7中的Na的溶液2 CO 3 H中2 O / EtOH中反应得到三个主要产物8 - 10。8的光谱数据与导致Mithcell和Sondheimer将其分配给环十[1,2,3- de:6,7,8- d'e' ]萘二萘的数据相同(3)。然而,我们的研究表明,正确的结构分配导致7,7a-二氢二苯并[ de,mn ]萘并苯的结构(8)。
Revisiting zethrene: synthesis, reactivity and semiconductor properties
Zethrene, a unique polycyclic aromatic hydrocarbon with formally fixed C–C double bonds, is predicted to have interesting properties and potential applications as an optical and electronic material. Here we report a novel synthesis of zethrene with improved yield, which presumably involves dinaphtho[10]-annulene as an unstable intermediate. With this convenient access to zethrene, we used zethrene as a p-type semiconductor in thin film transistors for the first time. It is found that Diels–Alder addition to the bay region of zethrene leads to new derivatives of benzo[pqr]naphtho[8,1,2-bcd]perylene, which behave as n-type organic semiconductors.
泽蒽是一种独特的多环芳烃,具有形式上固定的 C-C 双键,预计将具有有趣的特性,并有可能作为光学和电子材料应用。在此,我们报告了一种新的泽蒽合成方法,该方法提高了产率,可能涉及作为不稳定中间体的二萘并[10]-annulene。有了这种获得泽汀烯的便捷途径,我们首次将泽汀烯用作薄膜晶体管中的 p 型半导体。研究发现,在泽蒽的海湾区域进行 Diels-Alder 加成,可以得到苯并[pqr]萘并[8,1,2-bcd]苝的新衍生物,它们表现为 n 型有机半导体。
The attempted synthesis of a dinaphth-1,6-bisdehydro[10]annulene
作者:R.H. Mitchell、F. Sondheimer
DOI:10.1016/s0040-4020(01)92792-9
日期:1970.1
Attempts to prepare the dinaphth-1,6-bisdehydro[10]annulene 3 are described. 1-Ethynyl-8-(1′-iodo-8′-naphthylethynyl)naphthalene (13) was prepared in several steps from 1,8-diethynylnaphthalene (6), making use of the trimethylsilyl protecting group. The cuprous derivative of 13 on treatment with pyridine gave zethrene (9) and 7-iodozethrene (25), instead of 3. Zethrene (9) was also obtained from the