Selective Transformation of a Crown Ether/sec-Ammonium Salt-Type Rotaxane toN-Alkylated Rotaxanes

2010 ◽  
Vol 12 (4) ◽  
pp. 712-715 ◽  
Author(s):  
Sakiko Suzuki ◽  
Kazuko Nakazono ◽  
Toshikazu Takata
Keyword(s):  
Crown Ether ◽  
Ammonium Salt ◽  
Selective Transformation

Theoretical CD spectrum calculations of the crown-ether aralkyl-ammonium salt complex

Chirality ◽  
2002 ◽  
Vol 14 (5) ◽  
pp. 377-385 ◽  
Author(s):  
Armand Lázár ◽  
János G. Ángyán ◽  
Miklós Hollósi ◽  
Péter Huszthy ◽  
Péter R. Surján
Keyword(s):  
Crown Ether ◽  
Ammonium Salt ◽  
Cd Spectrum ◽  
Salt Complex

A supramolecular hyperbranched polymer based on molecular recognition between benzo-21-crown-7 and secondary ammonium salt

2014 ◽  
Vol 50 (93) ◽  
pp. 14666-14669 ◽  
Author(s):  
Hui Li ◽  
Xiaodong Fan ◽  
Wei Tian ◽  
Haitao Zhang ◽  
Wanbin Zhang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Crown Ether ◽  
Ammonium Salt ◽  
Hyperbranched Polymer ◽  
Effective Strategy ◽  
Stimuli Responsive ◽  
Responsive Behavior ◽  
Bold Type

This study provides an effective strategy for preparing a crown ether-based A2-B3-type supramolecular hyperbranched polymer with stimuli-responsive behavior.

Crown ether–tert-ammonium salt complex fixed as rotaxane and its derivation to nonionic rotaxane

2008 ◽  
Vol 49 (15) ◽  
pp. 2397-2401 ◽  
Author(s):  
Kazuko Nakazono ◽  
Shigeki Kuwata ◽  
Toshikazu Takata
Keyword(s):  
Crown Ether ◽  
Ammonium Salt ◽  
Salt Complex

Highly efficient synthesis of [3]- and [5]-rotaxanes consisting of crown ether and a sec-ammonium salt

2002 ◽  
pp. 2720-2721 ◽  
Author(s):  
Nobuhiro Watanabe ◽  
Takaya Yagi ◽  
Nobuhiro Kihara ◽  
Toshikazu Takata
Keyword(s):  
Crown Ether ◽  
Ammonium Salt ◽  
Efficient Synthesis ◽  
Highly Efficient

Ring size affects the kinetic and thermodynamic formation of [2]rotaxanes featuring an unsymmetric bis-crown ether component

2019 ◽  
Vol 3 (12) ◽  
pp. 2702-2706
Author(s):  
Masaya Naito ◽  
Takaaki Fujino ◽  
Shinya Tajima ◽  
Shinobu Miyagawa ◽  
Kazuyuki Yoshida ◽  
...  
Keyword(s):  
Crown Ether ◽  
Ammonium Salt ◽  
Small Ring ◽  
Ring Size

Kinetically and thermodynamically favored [2]rotaxanes, with an axle component positioned within a large and small ring, respectively, were provided by bridging of a [2]pseudorotaxane formed from an unsymmetric mono-crown ether and the ammonium salt.

Preparation of cross-linked supramolecular polymers based on benzo-21-crown-7/secondary ammonium salt host–guest interactions

2018 ◽  
Vol 54 (88) ◽  
pp. 12459-12462 ◽  
Author(s):  
Xing Li ◽  
Li Wang ◽  
Yan Deng ◽  
Zheng Luo ◽  
Qiao Zhang ◽  
...  
Keyword(s):  
Crown Ether ◽  
Ammonium Salt ◽  
Supramolecular Polymers ◽  
Supramolecular Complexation

Cross-linked supramolecular polymers were prepared by crown ether-based supramolecular complexation.

Positions of amino groups on ammonium salts tunes the conformations of crown ethers: crystal structures, Hirshfeld surfaces and spectroscopic studies

CrystEngComm ◽  
2014 ◽  
Vol 16 (24) ◽  
pp. 5319-5330 ◽  
Author(s):  
Yang-Hui Luo ◽  
Dong-En Wu ◽  
Wen-Tao Song ◽  
Shu-Wang Ge ◽  
Bai-Wang Sun
Keyword(s):  
Crown Ether ◽  
Crystal Structures ◽  
Crown Ethers ◽  
Ammonium Salt ◽  
Supramolecular Structure ◽  
Spectroscopic Studies ◽  
Ammonium Salts ◽  
Amino Group ◽  
Amino Groups ◽  
Hirshfeld Surfaces

The position of the amino group on the ammonium salt plays a key role in the supramolecular structure and conformation of the crown ether.

Catalyst- and oxidant-free electrochemical para-selective hydroxylation of N-arylamides in batch and continuous-flow

2020 ◽  
Vol 22 (19) ◽  
pp. 6437-6443
Author(s):  
Cheng-Kou Liu ◽  
Meng-Yi Chen ◽  
Xin-Xin Lin ◽  
Zheng Fang ◽  
Kai Guo
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Continuous Flow ◽  
Quaternary Ammonium Salt ◽  
Selective Hydroxylation

A catalyst-, oxidant-, acidic solvent- and quaternary ammonium salt-free electrochemical para-selective hydroxylation of N-arylamides at rt in batch and continuous-flow was developed.

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