Synthesis of a cryptand with tetrahedral connectivity using multiple ring-closing olefin metathesis
摘要:
By connecting six terminal olefins sequentially in one molecule under metathesis conditions, three macrocycles were formed efficiently in one pot yielding a novel cryptand with tetrahedral connectivity. (C) 2004 Elsevier Ltd. All rights reserved.
Nanostructured polymers with embedded self-assembled reactive gel networks
作者:Jamie R. Moffat、Gordon J. Seeley、Jeff T. Carter、Andrew Burgess、David K. Smith
DOI:10.1039/b809077g
日期:——
Generating polymers in the presence of a self-assembling gelator with terminal double bonds yields polymeric materials with embedded reactive nano-skeletons—subsequent washing gives nanoscale imprinted materials with fibrillar architectures.
在自组装凝胶剂存在的情况下,通过末端双键生成聚合物,从而产生具有嵌入反应
Template-Directed Olefin Cross Metathesis
作者:Stuart J. Cantrill、Robert H. Grubbs、Daniela Lanari、Ken C.-F. Leung、Alshakim Nelson、Katherine G. Poulin-Kerstien、Sebastian P. Smidt、J. Fraser Stoddart、David A. Tirrell
DOI:10.1021/ol051599g
日期:2005.9.1
A template containing two secondary dialkylammonium ion recognition sites for encirclement by olefin-bearing dibenzo[24]crown-8 derivatives has been used to promote olefin cross metatheses with ruthenium-alkylidene catalysts. For monoolefin monomers, the rates of metatheses and yields of the dimers are both amplified in the presence of the template. Likewise, for a diolefin monomer, the yield of the dimer is enhanced in the presence of the template under conditions where higher oligomers are not formed.
Synthesis of a cryptand with tetrahedral connectivity using multiple ring-closing olefin metathesis
作者:Shiyue Fang、Donald E. Bergstrom
DOI:10.1016/j.tetlet.2004.09.090
日期:2004.11
By connecting six terminal olefins sequentially in one molecule under metathesis conditions, three macrocycles were formed efficiently in one pot yielding a novel cryptand with tetrahedral connectivity. (C) 2004 Elsevier Ltd. All rights reserved.
Design and synthesis of covalently tethered “isoG-star” as a recyclable host for selective cesium separation
作者:Mengjia Liu、Ying He、Lukasz Wojtas、Xiaodong Shi
DOI:10.1039/d3gc02932h
日期:——
application of this newly developed covalently linked isoG-star enabled selective Cs+ extraction, followed by controlled solvent-induced H-bond dissociation. This resulted in the creation of a recyclable Cs+ extractor, demonstrating excellent cation selectivity and good reusability (over seven cycles) for the first time. Consequently, this new supramolecular macrocycle offers a practical new platform for