1124-08-9Relevant articles and documents
Staudinger ligation towards cyclodextrin dimers in aqueous/organic media. Synthesis, conformations and guest-encapsulation ability
Manouilidou, Malamatenia D.,Lazarou, Yannis G.,Mavridis, Irene M.,Yannakopoulou, Konstantina
, p. 774 - 783 (2014)
β-Cyclodextrin (β-CD) dimers have been prepared using the bioorthogonal Staudinger ligation for the first time. In addition to a known linker, methyl 2-(diphenylphosphanyl)terephthalate, a doubly active linker was specifically developed that enabled conne
Triggering the dynamics of a carbazole-: P -[phenylene-diethynyl]-xylene rotor through a mechanically induced phase transition
Aguilar-Granda, Andrés,Colin-Molina, Abraham,Jellen, Marcus J.,Nú?ez-Pineda, Alejandra,Cifuentes-Quintal, M. Eduardo,Toscano, Rubén Alfredo,Merino, Gabriel,Rodríguez-Molina, Braulio
, p. 14054 - 14057 (2019)
A new rotor exhibits rich solvatomorphism behavior with eight X-ray structures obtained. A heterogeneous solid obtained by mechanical stress exhibited a dominant isotropic 2H line shape at high temperatures. The motion occurs only in the amorph
New cruciform structures: Toward coordination induced single molecule switches
Grunder, Sergio,Huber, Roman,Horhoiu, Viviana,Gonzalez, Maria Teresa,Schoenenberger, Christian,Calame, Michel,Mayor, Marcel
, p. 8337 - 8344 (2007)
(Chemical Equation Presented) New cruciform structures 1-4 were synthesized to investigate a new single molecule switching mechanism arising from the interplay between the molecule and the electrode surface. These molecular cruxes consist of two rod-type
R4NHal/NOHSO4: A Usable System for Halogenation of Isoxazoles, Pyrazoles, and beyond
Bondarenko, Oksana B.,Karetnikov, Georgy L.,Komarov, Arseniy I.,Pavlov, Aleksandr I.,Nikolaeva, Svetlana N.
supporting information, p. 322 - 332 (2021/01/14)
A new convenient and versatile halogenating system (R4NHal/NOHSO4), giving straightforward and general access to halogenated 3,5-diaryl- and alkylarylisoxazoles, pyrazoles and electron-rich benzenes from the corresponding scaffolds, is suggested. The method provides excellent regioselectivity, scalability to the gram scale, and a broad scope for both aromatics and halogens. A three-step, one-pot reaction protocol was developed, and a series of 3,5-diaryl-4-haloisoxazoles has been efficiently synthesized from 1,2-diarylcyclopropanes under suggested nitrosating-halogenating conditions.
Metal-Free, Oxidant-Free, and Controllable Graphene Oxide Catalyzed Direct Iodination of Arenes and Ketones
Zhang, Jingyu,Li, Shiguang,Deng, Guo-Jun,Gong, Hang
, p. 376 - 380 (2017/12/07)
A direct, metal-free, and oxidant-free method for the graphene oxide (GO)-catalyzed iodination of arenes and ketones with iodine in a neutral medium was explored. This iodination protocol was performed by using a simple technique to avoid the use of external metal catalysts and oxidants and harsh acidic/basic reaction conditions. In addition, by this method the degree of iodination could be controlled, and the reaction was scalable and compatible with air. This strategy opens a new field for GO-catalyzed chemistry and provides an avenue for the convenient direct iodination of arenes and ketones.