29632-73-3Relevant articles and documents
Bicyclic Phenyl–Ethynyl Architectures: Synthesis of a 1,4-Bis(phenylbuta-1,3-diyn-1-yl) Benzene Banister
Bannwart, Linda Maria,Müntener, Thomas,Rickhaus, Michel,Jundt, Lukas,H?ussinger, Daniel,Mayor, Marcel
, p. 6295 - 6307 (2021)
The novel diacetylene bridged terphenylic macrocycle 1 is presented and discussed in the context of rotationally restricted “Gel?nder” oligomers. The 1,4-bis(phenylbuta-1,3-diyn-1-yl) benzene bridge of diacetylene 1 is significantly longer than its terphenyl backbone, forcing the bridge to bend around the central pylon. The synthesis of molecule 1 is based to a large extent on acetylene scaffolding strategies, profiting from orthogonal alkyne protection groups to close both macrocyclic subunits by oxidative acetylene coupling sequentially. The spatial arrangement and the dynamic enantiomerization process of the bicyclic target structure 1 are analyzed. In-depth NMR investigations not only reveal an unexpected spatial arrangement with both oligomer strands bent alongside the backbone, but also display the limited stability of the model compound in the presence of molecular oxygen.
Regioselective iodination of aryl amines using 1,4-dibenzyl-1,4-diazoniabicyclo [2.2.2] octane dichloroiodate in solution and under solvent-free conditions
Alikarami, Mohammad,Nazarzadeh, Somayeh,Soleiman-Beigi, Mohammad
, p. 157 - 162 (2015/01/30)
1,4-Dibenzyl-1,4-diazoniabicyclo[2.2.2]octane dichloroiodate is an efficient and regioselective reagent for iodination of aryl amines. A wide variety of aryl amines in reaction with this reagent afforded regioselectively iodinated products. The iodination reaction can be carried out in solution or under solvent-free condition at room temperature.
Amplification of enantioselectivity and sensitivity based on non-linear response of molecular wire bearing pseudo-18-crown-6 to chiral amines
Hirose, Keiji,Miura, Shintaro,Senda, Yui,Tobe, Yoshito
supporting information; experimental part, p. 6052 - 6054 (2012/07/14)
Exploiting a non-linear response for chiral discrimination, an intelligent system capable of chirality amplification was designed and constructed as poly(phenyleneethynylene) having chiral pseudo-18-crown-6. Both sensitivity and selectivity were amplified