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A Focus on Triazolium as a Multipurpose Molecular Station for pH-Sensitive Interlocked Crown-Ether-Based Molecular Machines.

Coutrot F - ChemistryOpen (2015)

Bottom Line: This can result in variations of physical or chemical properties.It also served as a molecular barrier in order to lock interlaced structures or to compartmentalize interlocked molecular machines.This review describes the recently reported examples of pH-sensitive triazolium-containing molecular machines and their peculiar features.

View Article: PubMed Central - PubMed

Affiliation: Supramolecular Machines and Architectures Team, Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 Cnrs, Faculté des Sciences, Université Montpellier, ENSCM Bâtiment Chimie (17), 3ème étage, Place Eugène Bataillon, case courrier 1706, 34095, Montpellier cedex 5, France.

ABSTRACT
The control of motion of one element with respect to others in an interlocked architecture allows for different co-conformational states of a molecule. This can result in variations of physical or chemical properties. The increase of knowledge in the field of molecular interactions led to the design, the synthesis, and the study of various systems of molecular machinery in a wide range of interlocked architectures. In this field, the discovery of new molecular stations for macrocycles is an attractive way to conceive original molecular machines. In the very recent past, the triazolium moiety proved to interact with crown ethers in interlocked molecules, so that it could be used as an ideal molecular station. It also served as a molecular barrier in order to lock interlaced structures or to compartmentalize interlocked molecular machines. This review describes the recently reported examples of pH-sensitive triazolium-containing molecular machines and their peculiar features.

No MeSH data available.


Utilization of a switchable triazolium-containing rotaxane catalyst for the introduction of an electrophile at the α position of an aldehyde.
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sch06: Utilization of a switchable triazolium-containing rotaxane catalyst for the introduction of an electrophile at the α position of an aldehyde.

Mentions: By continuing their efforts, the same authors successfully extended the catalyzed Michael-type reaction of the same thiol compound to different α,β-unsaturated carbonyl compounds.24 They also reported the Michael addition using 1,3-dicarbonyl compounds as the nucleophilic agent. Enamine catalysis25 was also investigated using the same switchable rotaxane catalyst for nucleophilic substitution and nucleophilic addition reactions in the α position of an aldehyde (Scheme 6).


A Focus on Triazolium as a Multipurpose Molecular Station for pH-Sensitive Interlocked Crown-Ether-Based Molecular Machines.

Coutrot F - ChemistryOpen (2015)

Utilization of a switchable triazolium-containing rotaxane catalyst for the introduction of an electrophile at the α position of an aldehyde.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4608521&req=5

sch06: Utilization of a switchable triazolium-containing rotaxane catalyst for the introduction of an electrophile at the α position of an aldehyde.
Mentions: By continuing their efforts, the same authors successfully extended the catalyzed Michael-type reaction of the same thiol compound to different α,β-unsaturated carbonyl compounds.24 They also reported the Michael addition using 1,3-dicarbonyl compounds as the nucleophilic agent. Enamine catalysis25 was also investigated using the same switchable rotaxane catalyst for nucleophilic substitution and nucleophilic addition reactions in the α position of an aldehyde (Scheme 6).

Bottom Line: This can result in variations of physical or chemical properties.It also served as a molecular barrier in order to lock interlaced structures or to compartmentalize interlocked molecular machines.This review describes the recently reported examples of pH-sensitive triazolium-containing molecular machines and their peculiar features.

View Article: PubMed Central - PubMed

Affiliation: Supramolecular Machines and Architectures Team, Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 Cnrs, Faculté des Sciences, Université Montpellier, ENSCM Bâtiment Chimie (17), 3ème étage, Place Eugène Bataillon, case courrier 1706, 34095, Montpellier cedex 5, France.

ABSTRACT
The control of motion of one element with respect to others in an interlocked architecture allows for different co-conformational states of a molecule. This can result in variations of physical or chemical properties. The increase of knowledge in the field of molecular interactions led to the design, the synthesis, and the study of various systems of molecular machinery in a wide range of interlocked architectures. In this field, the discovery of new molecular stations for macrocycles is an attractive way to conceive original molecular machines. In the very recent past, the triazolium moiety proved to interact with crown ethers in interlocked molecules, so that it could be used as an ideal molecular station. It also served as a molecular barrier in order to lock interlaced structures or to compartmentalize interlocked molecular machines. This review describes the recently reported examples of pH-sensitive triazolium-containing molecular machines and their peculiar features.

No MeSH data available.