13037-83-7Relevant articles and documents
Miller,McLaughlin
, p. 3541 (1978)
Volatile organic compound sensing by gold nanoparticles capped with calix[4]arene ligand
Kimura, Mutsumi,Yokokawa, Mei,Sato, Seiko,Fukawa, Tadashi,Mihara, Takashi
, p. 1402 - 1404 (2011)
Gold nanoparticles capped with calix[4]arene ligands have been designed and synthesized for highly sensitive and selective VOC sensing. Mass sensors coated with porous nanoparticle films displayed a good response toward toluene gas.
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Schmid,Schmid
, p. 687 (1953)
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UDCaT-5: A novel and efficient solid superacid catalyst for Claisen rearrangement of substituted allyl phenyl ethers
Yadav, Ganapati D.,Lande, Sharad V.
, p. 941 - 946 (2007/10/03)
The Claisen rearrangement of allyl phenyl ethers is a fundamental reaction in organic synthesis with a variety of applications in perfumes, flavors, pharmaceuticals, agrochemicals, polymers, fine chemicals, and intermediate industries. The development of environmentally benign processes using solid acid catalysts is becoming an area of growing interest. It was accomplished in an efficient, economical, environmentally friendly manner and is 100% selective toward alllyl phenols by employing UDCaT-5 as solid acid catalyst. Copyright Taylor & Francis Group, LLC.
Aryl cation and carbene intermediates in the photodehalogenation of chlorophenols
Manet, Ilse,Monti, Sandra,Fagnoni, Maurizio,Protti, Stefano,Albini, Angelo
, p. 140 - 151 (2007/10/03)
The photochemistry of 2,6-dimethyl-4-chlorophenol (6) has been studied in methanol and trifluoroethanol (TFE) through product studies and transient absorption spectroscopy. Chloride loss from triplet 6 gave triplet hydroxyphenyl cation 1.4, which equilibrated with triplet oxocyclohexadienylydene 15 within a few tens of nanoseconds; the cation can, however, be selectively trapped by allyltrimethylsilane (kad = 108-109 M -1S-1) to give a phenonium ion and the allylated phenol. In neat alcohols, 14 and 15 are reduced through different mechanisms, namely by hydrogen transfer through radical cation 17 and via phenoxyl radical 16, respectively. The mechanistic rationalization has been substantiated by the parallel study of an O-silylated derivative. The work shows that the chemistry of the highly (but selectively) reactive phenyl cation 14 can not only be discriminated from that of the likewise highly reactive carbene 15, but also exploited for synthetically useful reactions, as in this case with alkenes. Photolysis of electron-donating substituted halobenzcnes may be the method of choice for the mild generation of some classes of phenyl cations.