34733-56-7Relevant academic research and scientific papers
α-Arylation of ketones by aryllead triacetates. Effect of methyl and phenyl substitution at the α position
Morgan, Jacqueline,Pinhey, John T.,Rowe, Bruce A.
, p. 1005 - 1008 (2007/10/03)
An examination of the α-arylation of a number of ketones and their enolate salts by p-methoxyphenyllead triacetate provides further evidence for a very marked selectivity in the arylation reaction. It is found that the reaction proceeds well at tertiary α-carbons and at secondary centres activated by the presence of a phenyl group, but fails where the secondary centre is unactivated and at primary α-carbons.
Reaction of 1,3-dithietanes with 2KHSO5·KHSO4·K2SO4: Scope and limitation for the preparation of dithiirane derivatives
Ishii, Akihiko,Jin, Yi-Nan,Nagaya, Hidenori,Hoshino, Masamatsu,Nakayama, Juzo
, p. 1867 - 1870 (2007/10/02)
The reaction of 5,6-dithiabicyclo[2.1.1]hexane derivatives with OXONE in a two-phase mixture of dichloromethane and water gave the corresponding dithiirane derivatives which were stable in solution. The formation of the dithiiranes were proved by UV-Vis s
Oxidation of 2,2,3,3-Tetramethyl-1,4-diphenyl-5,6-dithiabicyclohexane and Its Oxidation Products: An Important Role of 1,3-Transannular Interaction in the 1,3-Dithietane Part
Ishii, Akihiko,Ding, Meng-Xin,Maeda, Kiyoto,Nakayama, Juzo,Hoshino, Masamatsu
, p. 3343 - 3349 (2007/10/02)
Oxidation of 2,2,3,3-tetramethyl-1,4-diphenyl-5,6-dithiabicyclohexane with m-chloroperbenzoic acid gives two isomeric endo- (4a) and exo-sulfoxides (4b), three S,S'-dioxides (endo, exo-5a, exo, exo-5b, and endo, endo-5c), and an S,S,S'-tioxide (6).
Crossed Aldol Type Condensation Reactions in Aqueous Media
Chan, T. H.,Li, C. J.,Wei, Z. Y.
, p. 505 - 507 (2007/10/02)
Directed crossed aldol type condensations can be carried out in aqueous media using α-halocarbonyl compounds, aldehydes, and metallic zinc or tin.
THE SENSITIZED PHOTOOXYGENATION OF METHYL SUBSTITUTED 1,2-DIPHENYLCYCLOBUTENES
Griffin, Gary W.,Kirschenheuter, Gary P.,Vaz, Caetan,Umrigar, Pesi P.,Lankin, David C.,Christensen, Siegfried
, p. 2069 - 2080 (2007/10/02)
A series of Me substituted 1,2-diphenylcyclobutenes was subjected to dye-sensitized photooxidation in the presence of methylene blue.In the case of the 3,3-dimethyl-, 3,3,4-trimethyl- and 3,3,4,4-tetramethyl-1,2-diphenylcyclobutenes, the sensitized oxidations are accompanied by ring-contraction with concomitant ortho hydroxylation of one aromatic nucleus.When electron transfer induced photooxidation techniques utilizing 9,10-dicyanoanthracene (DCA) as a sensitizer are employed with the series of Me substituted diphenylcyclobutenes, the reactions take a markedly different course and a broad spectrum of oxidation products are obtained including, most notably, ozonides of the cyclobutenes.The mechanisms of these conversions are addressed and the significance of the results discussed.
The Formation of Ozonides by Electron Transfer Induced Photo-oxidation of Small-ring Cycloalkenes
Kirschenheuter, Gary P.,Griffin, Gary W.
, p. 596 - 597 (2007/10/02)
Several polymethyl-1,2-diphenylcyclobutenes have been subjected to photo-oxidation in acetonitrile in the presence of 9,10-dicyanoanthracene and it is possible to isolate the corresponding ozonides, in moderate yields (ca. 13percent), apparently formed from oxirans produced in a primary step; 1,4-diketones are not generated from the ozonides under the reaction conditions although they are formed as reaction products by what must be an alternative mechanism.
RADICAL STABILISATION: SYNTHESIS AND DECOMPOSITION OF A β-KETODIAZENE
Zavalsky, Robert C.,Lisiak, Michael,Kovacic, Peter,Luedtke, Al,Timberlake, Jack W.
, p. 425 - 428 (2007/10/02)
The synthesis and decomposition of bis(1,1-dimethyl-2-oxo-2-phenylethyl)diazene (7e) is described.The presence of a carbonyl group adjacent to a radical center greatly enhances the radical stability.
