1611-83-2Relevant articles and documents
Solid polymer substrates and coated fibers containing 2,4,6-trinitrobenzene motifs as smart labels for the visual detection of biogenic amine vapors
Pablos, Jesús L.,Vallejos, Saúl,Mu?oz, Asunci?n,Rojo, María J.,Serna, Felipe,García, Félix C.,García, José M.
, p. 8733 - 8736 (2015)
Attempts to polymerize trinitrobenzene derivatives (TNB) have been fruitless so far. Accordingly, polymers containing TNB have not been exploited in spite of their envisaged potential applications. Here, we describe two ways for preparing polymers with TNB moieties thus overcoming the previously reported polymerization impairments. We also report on the exploitation of the materials, both obtained as tractable transparent films and coated fibers, as smart labels for the visual detection of amine vapors. More precisely, amines in the atmosphere surrounding the sensory materials diffuse into them reacting with the TNB motifs forming highly colored Meisenheimer complexes, giving rise to development of color and to the naked eye sensing phenomenon. This is the case of highly volatile amines, such as trimethylamine, produced in food spoilage, specifically in the deterioration of fish or meat, for which the color development of the smart labels can be used as a visual test for food freshness.
Efficient synthesis of aromatic sec-amides from esters: Synthetic utility of bislithium amides
Ooi, Takashi,Tayama, Eiji,Yamada, Masao,Maruoka, Keiji
, p. 729 - 730 (1999)
Convenient, efficient preparation of aromatic sec-amides from esters has been accomplished using dilithium amides which are easily prepared by treatment of aromatic amines with 2 equiv of BuLi in THF. This new method allows a facile formation of amide bond even with sterically hindered esters.
Electrochemical reduction of fluoroalkyl sulfones for radical fluoroalkylation of alkenes
Deng, Ling,Hu, Jinbo,Ni, Chuanfa,Zhou, Xin
supporting information, p. 8750 - 8753 (2021/09/08)
Radical fluoroalkylation of alkenes has been developed by electrochemical reduction of fluoroalkyl sulfones. A series of electron-deficient alkenes readily undergo hydrofluoroalkylation in good to excellent yields. This chemistry represents the first example of electrochemical generation of fluoroalkyl radicals from sulfones, which are used for practical radical fluoroalkylation of organic compounds.
Bromo Radical-Mediated Photoredox Aldehyde Decarbonylation towards Transition-Metal-Free Hydroalkylation of Acrylamides at Room Temperature
Deng, Guo-Jun,Huang, Huawen,Sun, Zhaozhao,Wang, Qiaolin
supporting information, (2021/12/03)
Herein, we report a visible-light-mediated hydroalkylation reaction of alkenes using easily available aldehydes as alkyl sources via bromo radical-promoted photoredox decarbonylation. This protocol provides an alternative entry to C(sp3)?C(sp3) bond formation and features considerable advantages including mild and clean reaction conditions, obviation for transition-metal catalyst, and good functional group compatibility.
