59895-54-4Relevant academic research and scientific papers
Gold(I)-catalysed one-pot synthesis of chromans using allylic alcohols and phenols
Coutant, Eloi,Young, Paul C.,Barker, Graeme,Lee, Ai-Lan
, p. 1797 - 1806 (2013)
A gold(I)-catalysed reaction of allylic alcohols and phenols produces chromans regioselectively via a one-pot Friedel-Crafts allyl-ation/ intramolecular hydroalkoxylation sequence. The reaction is mild, practical and tolerant of a wide variety of substituents on the phenol.
Cubic Pm3n mesoporous aluminosilicates assembled from zeolite seeds as strong acidic catalysts
Lin, Tsung-Han,Chen, Chia-Han,Chang, Chi-Shuang,Liu, Ming-Chang,Huang, Shing-Jong,Cheng, Soofin
, p. 3182 - 3193 (2015)
Cubic Pm3n mesoporous aluminosilicates isomorphous to SBA-1, with 3D interconnected pore structures, were assembled from Al-incorporating zeolite seeds at around pH 9 using cetyltriethylammonium bromide as a pore-directing agent. The resultant series of materials (termed Al-ZSBA-1) has the advantages of strong acidity from the zeolitic structure and good diffusivity of bulky reactants from the 3D interconnected mesopores. Al-ZSBA-1, with Al loading up to an Al/Si molar ratio of 0.057, still retains a cubic Pm3n structure and high surface area (ca. 600 m2 g-1). The acidities were stronger than the counter materials prepared using sodium silicate as the silica source (referred to as Al-SBA-1-alk). Moreover, all the Al(iii) ions in Al-ZSBA-1 retained their tetrahedral coordination after calcination at 823 K, while a portion of Al(iii) in Al-SBA-1-alk became octahedrally coordinated. When tested for the catalytic alkylation of 2,4-di-tert-butylphenol with cinnamyl alcohol, Al-ZSBA-1 gave higher flavan selectivities and yields in comparison to Al-SBA-1-alk, ZSM-5, and beta zeolites.
Aluminium-containing mesoporous benzene-silicas with crystal-like pore wall structure
Yang, Qihua,Yang, Jie,Feng, Zhaochi,Li, Ying
, p. 4268 - 4274 (2007/10/03)
Mesoporous benzene-silicas with a high content of tetrahedral aluminium in the framework (Si/Al = 37 and 59) were successfully synthesized, as evidenced by X-ray diffraction, N2 sorption analyses, transmission electron microscopy and solid state 13C CP-MAS, 27Al and 29Si MAS NMR spectroscopy. These materials have well-ordered 2D hexagonal mesostructure with a molecular scale periodicity in the pore walls. The existence of the phenylene groups in the framework greatly enhances the hydrothermal stability of the aluminium-containing mesoporous benzene-silicas. The acidity of the mesoporous benzene-silicas arising from the incorporated aluminium was measured by the FT-IR spectra of pyridine adsorption measurements. The organic groups bridged in the mesoporous framework affect significantly the acidity of the resultant materials although most aluminium atoms are in tetrahedral coordination. These materials are catalytically active for alkylation of 2,4-di-tert-butylphenol with cinnamyl alcohol. The Royal Society of Chemistry 2005.
Intramolecular excited-state interactions in phenol-styrene bicromophoric systems: A photochemical and photophysical study
Consuelo Jiménez,Miranda, Miguel A,Tormos, Rosa
, p. 115 - 120 (2007/10/03)
The intramolecular excited state interaction between phenol and styrene in a series of trans-2-cinnamylphenols bearing electron-donating substituents at the phenolic ring has been directly observed as an exciplex emission in acetonitrile. The photochemica
Polybutyl-2-cinnamylphenols as insect anti-procreants
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, (2008/06/13)
New polybutyl-2-cinnamylphenols, particularly 4,6-di-t-butyl-2-cinnamylphenol, are useful for insect control and especially as insect chemosterilants and oviposition inhibitors.
Certain cinnamyl phenols as growth inhibitors for mosquito larvae
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, (2008/06/13)
Poly-t-butyl-cinnamyl phenols and poly-t-butyl-dihydrocinnamyl phenols are disclosed to be useful for inhibiting the growth of mosquito larvae, thus providing means for controlling mosquito populations.
