6333-11-5Relevant articles and documents
Preparation method of α,β- or β,β-dihaloenones from diazodicarbonyls
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Paragraph 0031; 0038-0039; 0125-0126, (2017/08/30)
The present invention relates to a method for preparing andalpha;,andbeta;- or andbeta;,andbeta;-dihaloenone compounds from diazodicarbonyl compounds. According to the present invention, a diazo compound reacts with an oxalyl halide in the presence of a ruthenium catalyst so andalpha;,andbeta;- and andbeta;,andbeta;-dihaloenones can be synthesized through one-step reaction in an easy, simple and environmental manner. The synthesized andalpha;,andbeta;- and andbeta;,andbeta;-dihaloenones can be widely used for synthesis of intermediates of various drugs, natural materials, agricultural pesticides, dyes, etc. due to various biological activities.COPYRIGHT KIPO 2017
Sequential multiple-photon photochemistry of sterically congested enones
Schnapp, Karlyn A.,Motz, Philip L.,Stoeckel, Sharon M.,Wilson, R. Marshall,Krause Bauer, Jeanette A.,Bohne, Cornelia
, p. 2317 - 2320 (2007/10/03)
The photochemistry of sterically hindered enones 1 and 2 is described. A novel photorearrangement occurs in both systems which involves carbonyl attack on the adjacent phenyl ring, expansion of that ring to a cycloheptatriene and subsequent photochemically induced 1,7-phenyl migration.
Electron Transfer Reactions. Reaction of Furanones and Bifurandiones with Potassium and Oxygen
Pandey, Bipin,Tikare, Ravindra K.,Muneer, Mohammed,Kamat, Prashant V.,George, Manapurathu V.
, p. 917 - 928 (2007/10/02)
Treatment of furanones (1a - c, 25, 34) and bifurandiones (23, 37) with potassium in THF gave rise to radical anion intermediates, which reacted with oxygen to give superoxide and ultimately products derived through the reaction of superoxide with the starting furanones and bifurandiones.Thus, the reaction of 1a with potassium gave a mixture of 4-oxo-2,2,4-triphenylbutanoic acid (7a), 1,3,3-triphenyl-2-propen-1-one (11a), and benzoic acid (12).The reaction of 11a itself, under similar conditions, gave a mixture of benzophenone (18a) and 12.Similar reactions have been observed in the case of 1b and c.The bifurandione 23, on treatment with potassium, gave a mixture of the 2(5H)-furanone 25, 2,3-diphenylpropenoic acid (31), and 12.The reaction of 25 itself with potassium under similar conditions gave the same mixture of 31 and 12.Treatment of 3-phenyl-2(3H)-benzofuranone (34) with potassium, however, did not give any isolable product; only the starting material could be recovered.Under similar conditions, the bifurandione 37 gave the fragmentation product 34.Cyclic voltammetric studies have been employed to measure the reduction potentials, leading to radical anions, and these intermediates have been characterized through their electronic spectra.
