我们报告了固有的微孔性(network-PIMs)网络聚合物的合成和性质,该聚合物来自具有连接至其桥头位置的烷基的三茂基单体。可以通过烷基链的长度和支链来控制气体的吸附,从而使材料的表观BET表面积可以在618-1760 m 2 g -1的范围内进行调整。。较短的(例如甲基)或支链的(例如异丙基)烷基链提供了最大的微孔性,而较长的烷基链似乎阻止了由刚性有机骨架产生的微孔。与其他PIM相比,增强的微孔性源自骨架的大分子形状,这是由三萜烯单元决定的,这有助于减少刚性骨架的延伸平面支柱之间的分子间接触,从而降低了填充在骨架内的效率。坚硬的。对于具有低或中等压力(在1 bar / 77K下为1.83质量%;在18 bar / 77 K下为3.4质量%)的纯有机材料,具有甲基或异丙基取代基的三茂基PIM的氢吸附能力是最高的。 )。
Preparation of Tri- and Hexasubstituted Triptycene Synthons by Transition Metal Catalyzed Cross-Coupling Reactions for Post-Modifications
作者:Claire Moylan、Luke Rogers、Yasser M. Shaker、Mia Davis、Hans-Georg Eckhardt、Raphael Eckert、Aoife A. Ryan、Mathias O. Senge
DOI:10.1002/ejoc.201501272
日期:2016.1
building strategies and appropriate synthons have been developed for the use of triptycene as a rigid presenting scaffold. Palladium-catalyzed cross-couplingreactions, such as Sonogashira and Suzuki couplings, were used to install a variety of different synthetic handles around the triptycene periphery in a high-yielding and controlled manner. These triptycene molecular handles were investigated for
Triple play: A novel triphenylene‐based tris(N‐heterocyclic carbene) ligand with D3h symmetry and a highly π‐delocalized system has been prepared and coordinated to palladium and gold (see figure). The catalytic activities of the new complexes have been compared with those of related benzimidazolylidene and a triptycene‐based tris(N‐heterocyclic carbene) complexes in three reactions.
三重作用:制备了具有D 3 h 对称性和高度π-离域体系的新型基于三亚苯基的三(N-杂环卡宾)配体,并与钯和金配位(参见图)。在三个反应中,已将新配合物的催化活性与相关的苯并咪唑基亚烷基和基于三并茂的三(N-杂环卡宾)配合物进行了比较。
Towards Molecular Construction Platforms: Synthesis of a Metallotricyclic Spirane Based on Bis(2,2′:6′,2“-Terpyridine)Ru<sup>II</sup>Connectivity
作者:Ting-Zheng Xie、Kai Guo、Mingjun Huang、Xiaocun Lu、Sheng-Yun Liao、Rajarshi Sarkar、Charles N. Moorefield、Stephen Z. D. Cheng、Chrys Wesdemiotis、George R. Newkome
DOI:10.1002/chem.201403840
日期:2014.9.1
The design and construction of the first multicomponent stepwise assembly of a ‐based (tpy=terpyridine), three‐dimensional, propeller‐shaped trismacrocycle, 8, are reported. Key steps in the synthesis involve the preparation of a hexaterpyridinyl triptycene and its reaction with dimeric, 60°‐directional, bisterpyridine‐RuII building blocks. Characterization includes ESI‐ and ESI‐TWIM‐MS and TEM, along
报告了基于< tpy -Ru II -tpy>-基(tpy = terpyridine)的三维螺旋桨形三体大环的第一个多组分逐步装配的设计和构造8。合成的关键步骤包括制备六吡啶基三萜烯,并使其与二聚体,60°定向的比邻吡啶-Ru II结构单元反应。表征包括ESI-和ESI-TWIM-MS和TEM,以及1D和2D 1 H NMR光谱。
Palladium-Catalyzed Butoxycarbonylation of Polybromo(hetero)arenes: A Practical Method for the Preparation of (Hetero)arenepolycarboxylates and -carboxylic Acids
作者:Baoming Ji、Weilong Wu、Yongkang Jing、Deyi Zhang、Xianghe Yan、Rong Liang、Zhiqiang Lu
DOI:10.1055/a-1587-8859
日期:2022.1
The palladium-catalyzed alkoxycarbonylation of polybromo(hetero)arenes was investigated systematically. The results show that cheap and readily available in situ Pd(OAc)2/rac-BINAP catalyst can catalyze the butoxycarbonylation of various polybromo(hetero)arenes efficiently, and gave (hetero)arenepolycarboxylates with moderate to high yield (59–94%). Using this method, two new compounds, 4,4′-bis(butoxycarbonyl)-1