Role of Functionalized Pillararene Architectures in Supramolecular Catalysis

2020 ◽  
Author(s):  
Kaiya Wang ◽  
Jacobs H. Jordan ◽  
Krishnasamy Velmurugan ◽  
Xueqi Tian ◽  
Minzan Zuo ◽  
...  
Keyword(s):  
Supramolecular Catalysis

Supramolecular catalysis: the role of H-bonding interactions in substrate orientation and activation

2021 ◽  
Author(s):  
Sanya Pachisia ◽  
Rajeev Gupta
Keyword(s):  
Hydrogen Bonds ◽  
Supramolecular Complexes ◽  
Substrate Orientation ◽  
Supramolecular Catalysis

This perspective highlights the importance of hydrogen bonds in supramolecular complexes for the recognition and binding of a substrate that subsequently influence and/or control the catalytic outcome.

Role of β-CD in Water as Supramolecular Catalysis

2015 ◽  
Vol 3 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Madhulika Srivastava ◽  
Pratibha Rai ◽  
Jaya Singh ◽  
Snehlata Yadav ◽  
Bhartendu Pati Tripathi ◽  
...  
Keyword(s):  
Supramolecular Catalysis

The amino side chains do matter: chemoselectivity in the one-pot three-component synthesis of 2-amino-4H-chromenes by supramolecular catalysis with amino-appended β-cyclodextrins (ACDs) in water

2016 ◽  
Vol 6 (12) ◽  
pp. 4283-4293 ◽  
Author(s):  
Yufeng Ren ◽  
Bo Yang ◽  
Xiali Liao
Keyword(s):  
Side Chains ◽  
One Pot ◽  
Supramolecular Catalysis ◽  
The One ◽  
First Time

The one-pot three-component synthesis of 2-amino-4H-chromenes was accomplished by supramolecular catalysis with well-designed amino-appended β-cyclodextrins (ACDs) in water, while the key role of amino side chains in chemoselectivity was determined for the first time.

ChemInform Abstract: Role of β-CD in Water as Supramolecular Catalysis

ChemInform ◽  
2016 ◽  
Vol 47 (15) ◽  
pp. no-no
Author(s):  
Madhulika Srivastava ◽  
Pratibha Rai ◽  
Jaya Singh ◽  
Snehlata Yadav ◽  
Bhartendu Pati Tripathi ◽  
...  
Keyword(s):  
Supramolecular Catalysis

Role of Functionalized Pillararene Architectures in Supramolecular Catalysis

2020 ◽  
Author(s):  
Kaiya Wang ◽  
Jacobs H. Jordan ◽  
Krishnasamy Velmurugan ◽  
Xueqi Tian ◽  
Minzan Zuo ◽  
...  
Keyword(s):  
Supramolecular Catalysis

Enhanced Activity in the Tosylation of Tolanophanes via Supramolecular HgCl2 Recognition

2020 ◽  
Vol 73 (7) ◽  
pp. 608
Author(s):  
Saeed Rastgar ◽  
Hossein Reza Darabi ◽  
Leila Sobhani ◽  
Kioumars Aghapoor ◽  
Rohoullah Firouzi ◽  
...  
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Reaction Rate ◽  
Alkyl Chain ◽  
Ring Cavity ◽  
The Self ◽  
Supramolecular Catalysis ◽  
Chain Lengths ◽  
Isomeric Mixtures

The ‘self-activation’ of host molecules via the incorporation of a guest has received considerable attention in supramolecular catalysis. Here, we demonstrate how HgCl2 effects the tosylation rate of tolanophanes (1a–c: n=2−4) with different alkyl chain lengths. Among these substrates, 1a has the highest strain in sp carbons and, therefore, is active even without assistance of HgCl2. In contrast, 1c is inert and needs to be activated in the presence of HgCl2. Therefore, the averaged reaction rate is in the following order: 1c>1b>1a, confirming the role of the supramolecular cavity of 1 over the strain of alkyne bonds. Ab initio calculations are consistent with the experimentally derived reactivity, supporting our size-fitting hypothesis. In contrast, acyclic analogues showed lower activity in the presence of HgCl2 to confirm the effect of the ring cavity. To gain more information, the HgCl2 complexation of 1b was examined by using 1H NMR and UV-vis spectroscopies. All products 5 are new and well characterized. The hydration of isomeric mixtures of 5b,c gave the corresponding single products 4b,c.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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