Results 81 to 90 of about 167 (133)
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Synthesis of Unsymmetrical Benzil Licoagrodione
The Journal of Organic Chemistry, 2008A synthesis of unsymmetrical 1,2-diarylethane-1,2-dione is reported involving the intramolecular cyclization of anionic benzylic ester of the aryl benzyl ether followed by oxidation employing dioxirane. With the use of microwave irradiation, licoagrodione was prepared from Claisen rearrangement of the corresponding allyl phenyl ether 1,2-diketone ...
Rattana, Worayuthakarn +5 more
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Canadian Journal of Research, 1931
In the presence of a small amount of sodium methylate, cyclohexanone and benzil form an addition product, which is a "semicyclic" 1:4-diketone. No derivatives of a bicyclic cyclo-heptane were found. Its most conspicuous chemical property is its sensitivity to mineral acids; among the reaction products is found a diphenyltetrahydrocumarone.
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In the presence of a small amount of sodium methylate, cyclohexanone and benzil form an addition product, which is a "semicyclic" 1:4-diketone. No derivatives of a bicyclic cyclo-heptane were found. Its most conspicuous chemical property is its sensitivity to mineral acids; among the reaction products is found a diphenyltetrahydrocumarone.
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Tetrahedron Letters, 1983
Abstract Benzil and 9,10-phenanthrenoquinone are transformed to the benzilic acid-type esters by the action of lithium tert-butoxide in tetrahydrofuran (THF)-benzene. The semidione of the diketone has been shown by ESR spectroscopy to be an intermediate.
Screttas, Constantinos G. +2 more
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Abstract Benzil and 9,10-phenanthrenoquinone are transformed to the benzilic acid-type esters by the action of lithium tert-butoxide in tetrahydrofuran (THF)-benzene. The semidione of the diketone has been shown by ESR spectroscopy to be an intermediate.
Screttas, Constantinos G. +2 more
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The cyclodehydrogenation of benzil dianil
Journal of the Chemical Society D: Chemical Communications, 1970Benzil dianil undergoes a cyclodehydrogenation with lithium in tetrahydrofuran to produce the dianion of 9,10-dianilinophenanthrene and lithium hydride.
E. J. MacPherson, James G. Smith
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Ferroelectrics, 1988
Abstract Measurements of the pyroelectric current have been performed in electrically polarized samples of crystalline BENZIL across the 82K structural transition in this material. The results yield a signal which is a few orders of magnitude below the value expected from a theoretical evaluation of the spontaneous polarization Ps.
Abilio Almeida +6 more
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Abstract Measurements of the pyroelectric current have been performed in electrically polarized samples of crystalline BENZIL across the 82K structural transition in this material. The results yield a signal which is a few orders of magnitude below the value expected from a theoretical evaluation of the spontaneous polarization Ps.
Abilio Almeida +6 more
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ChemInform Abstract: Microwave‐Assisted Heterogeneous Benzil—Benzilic Acid Rearrangement.
ChemInform, 1999AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Hui‐Ming Yu +4 more
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1980
Abstract : Three approaches were investigated to obtain a general method of synthesis of low-cost bis-benzil monomers for use in quinoxaline resin systems. Reaction of phenylmagnesium bromide with iron carbonyl and acid chlorides was unsuccessful. Reaction of acid chlorides with benzylidene triphenylphosphorane followed by periodate oxidation proved ...
C. S. Marvel, C. C. Yu, Stephen Havens
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Abstract : Three approaches were investigated to obtain a general method of synthesis of low-cost bis-benzil monomers for use in quinoxaline resin systems. Reaction of phenylmagnesium bromide with iron carbonyl and acid chlorides was unsuccessful. Reaction of acid chlorides with benzylidene triphenylphosphorane followed by periodate oxidation proved ...
C. S. Marvel, C. C. Yu, Stephen Havens
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The rotatory dispersion of benzil
Proceedings of the Indian Academy of Sciences - Section A, 1954The paper reports a study of the rotatory dispersion and the ultraviolet absorption spectrum of crystalline benzil. Transmission spectra have been photographed with varying thicknesses of the crystal. Even with the thinnest specimens (0.02 mm.) there is an almost complete cut off in the transmitted intensity beyond 3400 A marking the presence of an ...
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The Benzil Dicyanohydrin Rearrangement Analogy with the Benzil-Cyanide Reaction
The Journal of Organic Chemistry, 1994Angelo Clerici, Ombretta Porta
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