Switchable molecular tweezers: design and applications

• Pablo Msellem,
• Maksym Dekthiarenko,
• Nihal Hadj Seyd and
• Guillaume Vives

Beilstein J. Org. Chem. 2024, 20, 504–539, doi:10.3762/bjoc.20.45

A chiral self-sorting photoresponsive coordination cage based on overcrowded alkenes

• Constantin Stuckhardt,
• Diederik Roke,
• Wojciech Danowski,
• Edwin Otten,
• Sander J. Wezenberg and
• Ben L. Feringa

Beilstein J. Org. Chem. 2019, 15, 2767–2773, doi:10.3762/bjoc.15.268

• between the three isomers. Two of the isomers were able to form host–guest complexes opening up new prospects toward stimuli-controlled substrate binding and release. Keywords: coordination cages; molecular motors; molecular switches; overcrowded alkene; palladium; Introduction Supramolecular

• -pyridinylboronic acid with an E/Z mixture of reported overcrowded alkene precursors [51] (see Supporting Information File 1 for full experimental details). Heating a 2:1 mixture of ligands (S,S)-Z-1 or (S,S)-E-1 with Pd(NO3)2 in acetonitrile at reflux led to the quantitative formation of cage Pd2(stable Z-1)4 or

• (stable E-1)4 generated by irradiation of Pd2(unstable Z-1)4 at 365 nm. Cage formation of overcrowded alkene switches E/Z-1 and their isomerization behavior. Note that the intermediate unstable E-1 is not shown; due to the low barrier of thermal helix inversion and therefore fast isomerization to the

The importance of the rotor in hydrazone-based molecular switches

• Xin Su,
• Timo Lessing and
• Ivan Aprahamian

Beilstein J. Org. Chem. 2012, 8, 872–876, doi:10.3762/bjoc.8.98

• ], electrochemical [10][11][12][13], and photochemical stimuli [14][15][16][17][18]. One of the benefits of artificial molecular switches and machines is that their output can be controlled or fine-tuned by altering their components [19][20][21]. A relevant example in this context is Feringa’s overcrowded alkene