Results 311 to 320 of about 16,649 (384)

Lewis Acid-Assisted Photoinduced Intermolecular Coupling between Acylsilanes and Aldehydes: A Formal Cross Benzoin-Type Condensation.

Chemistry, 2018
Intermolecular carbon-carbon bond-forming reaction between readily available acylsilanes and aldehydes was achieved under photoirradiation conditions with assistance of a catalytic amount of Lewis acid.
K. Ishida, Fumiya Tobita, H. Kusama
semanticscholar   +1 more source

Benzoin Schiff Bases: Design, Synthesis, and Biological Evaluation as Potential Antitumor Agents.

Medicinal chemistry, 2018
BACKGROUND Phosphoinositide 3-kinase α (PI3Kα) is an attractive target for anticancer drug design. OBJECTIVES Target compounds were designed to probe the significance of alcohol and imine moieties tailored on a benzoin scaffold to better understand the
D. Sabbah, Fatima Al-tarawneh, Wamidh H. Talib, K. Sweidan, S. Bardaweel, E. Al-Shalabi, Haizhen A. Zhong, G. Abu Sheikha, R. Abu Khalaf, Mohammad S. Mubarak   +9 more
semanticscholar   +1 more source

ChemInform Abstract: ZERS. DER TOSYLHYDRAZONE VON BENZOIN, BENZOIN‐ACETAT UND BENZOIN‐BENZOAT DURCH ALKALI

Chemischer Informationsdienst. Organische Chemie, 1970
AbstractDie aus Benzoin (Ia), Benzoin‐acetat (Ib) und Benzoin‐benzoat (Ic) hergestellten Tosylhydrazone (IIa)‐(IIc) werden mit Alkali in Gegenwart von Protonen und in ihrer Abwesenheit, d.h. durch Methylat/Diglykoläthyläther oder Natrium/Glykol, gespalten und das jeweils erhaltene Mengenverhältnis an Desoxybenzoin (III) und Diphenyl‐acetylen (IV ...
Akira Matsunaga, I. Adachi, Mi. Hayashi, T. Iwadare, T. Kitai   +4 more
openaire   +2 more sources

N-Heterocyclic Carbene-Catalyzed Asymmetric Benzoin Reaction in Water.

Journal of Organic Chemistry, 2018
A chiral N-heterocyclic carbene-catalyzed benzoin condensation reaction in water has been developed, affording α-hydroxy ketones in good to high yields and high enantioselectivities.
Jun Yan, Rong Sun, K. Shi, Kai Li, Limin Yang, Guofu Zhong   +5 more
semanticscholar   +1 more source

Diphenyl Diselenide Catalyzed Oxidative Degradation of Benzoin to Benzoic Acid

Synlett : Accounts and Rapid Communications in Synthetic Organic Chemistry, 2019
The diphenyl diselenide catalyzed oxidative degradation of benzoin to benzoic acid is reported. As this reaction can convert the malodorous compound into an odorless and innocuous product under mild conditions, it might be useful for pollutant disposal ...
Hongen Cao, Tian Chen, Chenggen Yang, Jian-qing Ye, Xu Zhang   +4 more
semanticscholar   +1 more source

N-Heterocyclic carbene catalyzed chemo- and enantioselective cross-benzoin reaction of aldehydes with isatins

Organic Chemistry Frontiers, 2019
A highly chemoselective N-heterocyclic carbene catalyzed intermolecular cross-benzoin reaction of aldehydes with isatins to afford enantioenriched 3-substituted-3-hydroxyoxindoles is described.
Jianfeng Xu, Jingyi Peng, Chonglong He, H. Ren   +3 more
semanticscholar   +1 more source

Autoxidation of benzoin

Journal of Chemical Education, 1970
Benzoin in its enediol form undergoes autoxidation in alkaline solution in the presence of air.
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Oxidative benzoin reactions

Tetrahedron, 1982
Abstract A one-pot synthesis (yields over 50%) of methyl and ethyl esters from aldehydes (and the corresponding alcohol), using aromatic nitrocompounds as oxidizing agents under the catalytic action of cyanide ion or of a conjugate base of a thiazolium ion, is described.
F. Pujol, H. Llitjós, Marcial Moreno-Mañas, J. Castells   +3 more
openaire   +2 more sources

Chemoselective Intermolecular Cross-Benzoin Reaction of Aliphatic Aldehydes and Isatins via N-Heterocyclic Carbene Catalysis

Synthesis, 2019
An N-heterocyclic carbene (NHC)-catalyzed chemoselective intermolecular cross-benzoin reaction of aliphatic aldehydes with isatins is developed, affording biologically important 3-substituted 3-hydroxyoxindoles (on gram scale) in moderate to good yields (
H. Ji, Jianfeng Xu, H. Ren
semanticscholar   +1 more source

Strength of chelation in benzoins

Proceedings of the Indian Academy of Sciences - Section A, 1974
The infrared and ultraviolet absorption spectra of substituted benzoins have been studied with a view to find the influence of ring substituents on the strength of chelation in benzoins. The strength of chelation was found to be in the order 4-dimethylamino benzofuroin > 4-dimethylamino benzoin > 4-methoxy benzoin = anisoin > benzoin = furoin.
B. Subrahmanyam, N. V. Subba Rao
openaire   +2 more sources