Halogen bond shortens and strengthens the bridge bond of [1.1.1]propellane and the open form of [2.2.2]propellane

2018 ◽  
Vol 20 (40) ◽  
pp. 25792-25798 ◽  
Author(s):  
Jyothish Joy ◽  
Edakkandy Akhil ◽  
Eluvathingal D. Jemmis
Keyword(s):  
Halogen Bond ◽  
Open Form ◽  
Bridge Bond ◽  
Electron Scavenger

The electron scavenger property of halogen bond donors is employed to stabilize the bridge-bond of [1.1.1]propellane and o-[2.2.2]propellane.

Mukaiyama Aldol Reaction Catalyzed by (Benz)imidazolium-Based Halogen Bond Donors

2020 ◽  
Author(s):  
Revannath L. Sutar ◽  
Nikita Erochok ◽  
Stefan Huber
Keyword(s):  
Halogen Bond ◽  
Aldol Reaction ◽  
Mukaiyama Aldol Reaction ◽  
Mukaiyama Aldol ◽  
Background Reaction ◽  
Strong Performance ◽  
The Stability ◽  
Elemental Iodine

A series of cationic monodentate and bidentate iodo(benz)­imidazolium-based halogen bond (XB) donors were employed as catalysts in a Mukaiyama aldol reaction. While 5 mol% of a monodentate variant showed noticeable activity, a <i>syn</i>-preorganized bidentate XB donor provided a strong performance even with 0.5 mol% loading. In contrast to the very active BAr<sup>F</sup><sub>4</sub> salts, PF<sub>6</sub> or OTf salts were either inactive or showed background reaction. Repetition experiments clearly ruled out a potential hidden catalysis by elemental iodine and demonstrated the stability of our catalyst over three consecutive cycles.

Recent Strategies for Carbon‐Halogen Bond Formation Using Nickel

2021 ◽  
Author(s):  
Mark Lautens ◽  
Austin D. Marchese ◽  
Timur Adrianov
Keyword(s):  
Halogen Bond ◽  
Bond Formation

Halogen bond-induced electrophilic aromatic halogenations

2021 ◽  
Author(s):  
Wanutcha Lorpaiboon ◽  
Pakorn Bovonsombat
Keyword(s):  
Halogen Bond

This review highlights the recent development of halogen bond-induced activations of N-halosuccinimides and N,N-dihalodimethylhydantoins in electrophilic aromatic halogenations.

scholarly journals The influence of secondary interactions on the [N‐I‐N]+ halogen bond

2021 ◽  
Author(s):  
Sofia Lindblad ◽  
Flóra Boróka Németh ◽  
Tamás Földes ◽  
Daniel von der Heiden ◽  
Herh G. Vang ◽  
...  
Keyword(s):  
Halogen Bond ◽  
Secondary Interactions

Interfacial adsorption of lipases on very hydrophobic support (octadecyl–Sepabeads): immobilization, hyperactivation and stabilization of the open form of lipases

2002 ◽  
Vol 19-20 ◽  
pp. 279-286 ◽  
Author(s):  
José M Palomo ◽  
Gloria Muñoz ◽  
Gloria Fernández-Lorente ◽  
Cesar Mateo ◽  
Roberto Fernández-Lafuente ◽  
...  
Keyword(s):  
Open Form ◽  
Interfacial Adsorption
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