89510-55-4Relevant academic research and scientific papers
Oxidative cross-coupling of vinylsilanes in water
Cicco, Stefania R.,Martinelli, Carmela,Pinto, Vita,Naso, Francesco,Farinola, Gianluca M.
, p. 15 - 20 (2013/06/27)
Palladium-promoted cross-dimerization reaction of alkenylsilanes is reported for the first time, which is also one of the very first studies on oxidative cross-coupling between vinylic organometallic reagents. The reaction occurs at room temperature in aqueous micelles and represents a convenient access to all-trans push-pull butadienes.
A fluorescence emission study of nitro- and nitromethyl-substituted 1,4- diarylbutadienes in solid state
Singh,Kanvah
, p. 965 - 973 (2007/10/03)
1-(4-Nitrophenyl)-4-phenylbuta-1E,3E-diene 1, 1,4-di (4-nitrophenyl)buta-1E,3E-diene 2, 1-phenyl-2-methyl-4-(4-nitrophenyl) buta-1E,3E-diene 3, and 1-4-di (4-nitrophenyl)-2-methylbuta-1E,3E-diene 4 have been synthesized and their fluorescence emissions in
Direct CC Triple Bond Formation from the C=C Double Bond and Direct Hydroxylation into the o-Position of a Nitro Group on the Benzene Nucleus with Potassium t-Butoxide in N,N-DImethylformamide in the Air
Akiyama, Shuzo,Tajima, Kunihiko,Nakatsuji, Shin'ichi,Nakashima, Kenichiro,Abiru, Kazuko,Watanabe, Miwa
, p. 2043 - 2052 (2007/10/03)
A novel and facile method for direct CC acetylenic bond formation from the C=C double bond by treatment with potassium t-butoxide (t-BuOK) in N,N-dimethylformamide in the air has been found in a 9,10-bis(4-substituted styryl)anthracene series, in 4-substituted 4'-nitrostilbene series, and in 1-(p-nitrophenyl)-4-(p-substituted phenyl)-1,3-butadiene series; its scope and limitations have been examined.The ESR spectrum of the reaction against 4-diethylamino-4'-nitrostilbene was measured to identify an anion radical specied expected for explanation of the mechanism of the dehydrogention reaction.Further, cyclic voltammetric measurements of a series of stilbenes and diphenylacetylenes were carried out in connection with the abovw mechanism.In many cases, interestingly, the use of a large excess of t-BuOH brought about succeeding hydroxylation into the ortho-position of a nitro group on the benzene nucleus.The simple hydroxylation is useful for the synthesis of substituted 5-(arylethynyl)-2-nitrophenols, which are expected to function as non-linear optical materials with the corresponding non-hydroxy compounds.The ultraviolet-visible and fluorescence spectral properties were measured and discussed also with those of the related compounds.
Palladium-Catalyzed Syntheses of Aryl Polyenes
Mitsudo, Taki-aki,Fischetti, William,Heck, Richard F.
, p. 1640 - 1646 (2007/10/02)
The palladium-catalyzed arylation reaction has been employed to prepare a variety of mono- and diaryl 1,3-dienes and 1,3,5-trienes.The yields were good when electron withdrawing substituents were present in the aryl groups but only poor to fair when electron-donating groups were involved.Monoaryl dienes and trienes reacted well with all types of aryl halides to give mixed diaryl derivatives. 2-Bromostyrene reacts with phenylhexatriene to form 1,8-diphenyloctatetraene and with hexatriene to form 1,10-diphenyldecapentaene, but both only in about 15percent yield.
