Results 31 to 40 of about 5,651,932 (190)

Kinetics and Mechanism of Oxidation of Aromatic Aldehydes by Imidazolium Dichromate in Aqueous Acetic Acid Medium

open access: yesE-Journal of Chemistry, 2009
The kinetics of oxidation of benzaldehyde (BA) and para-substituted benzaldehydes by imidazolium dichromate (IDC) has been studied in aqueous acetic acid medium in the presence of perchloric acid.
S. Sheik Mansoor, S. Syed Shafi
doaj   +1 more source

The Hammett Relationship in the Reduction of Aldehydes with 2-Propanol by Catalysis with Hydrous Zirconium Oxide [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1988
Abstract A linear correlation of the Hammett relationship was obtained for a catalytic reduction of substituted benzaldehydes with 2-propanol with hydrous zirconium oxide. The reaction constant ρ was 1.35, indicating that the electronic effect on the reaction is larger than that on the standard one.
Makoto Shibagaki   +3 more
openaire   +1 more source

Theoretical Calculation of Hammett Constants for Benzoic Acid and Its Derivatives Using AM1-DFT Method

open access: yesTikrit Journal of Pure Science
The Hammett equation constants were calculated theoretically by statistically correlating the practical Hammett equation constants for these compounds with several theoretically calculated structural properties.
Abdullah Ramadan Ali, Faiz M. Hamid
doaj   +1 more source

Determination of acid dissociation constants of some hydroxy schiff bases by pH-metric titration. application of the Hammett equation

open access: yesMATEC Web of Conferences, 2013
Ten compounds hydroxybases Schiff were synthesized from salicylaldehyde and the substituted aniline in the ortho, meta and para methyl groups, chloro and nitro.
Hadjeb R., Bara A., Barkat D.
doaj   +1 more source

Leveraging graph neural networks to predict Hammett’s constants for benzoic acid derivatives

open access: yesArtificial Intelligence Chemistry
The Hammett constants, σm and σp, reflect the electron-withdrawing and electron-donating abilities of substituents on aromatic compounds, and have been successfully used in various structure-activity relationship studies.
Vaneet Saini, Ranjeet Kumar
doaj   +1 more source

Oral Interview of Anne G. Hammett [PDF]

open access: yes, 1974
Anne G. Hammett discusses her early education in Glyndon, Minnesota, and then at the Agricultural College of North Dakota and Minnesota State Teachers College.
Hammett, Anne G.
core   +1 more source

Dan Hammett: teapot/ceramics(3) [PDF]

open access: yes, 2017
ARTIST: Dan Hammett (UD Professor) MATERIAL: ceramics DIMENSIONS: COLLECTION: UDC CATALOG#: UDC.3002.5 LOCATION: Counselor’s office (confirm) PROVENANCE: University of Dallas, 2017From http://www.danhammettceramics.com/: I have been privileged in ...
Hammett, Dan
core  

A letter from A.B.J. Hammett to Dr. Hector P. Garcia, thanking him for a recent order that Dr. Hector P. Garcia put in to his company.

open access: yes, 1971
A letter from A.B.J. Hammett to Dr. Hector P. Garcia, thanking him for a recent order that Dr. Hector P.
Hammett, A.B.J.
core   +3 more sources

Theoretical Study of Electron Transfer Process Between Fullerenes and Membrane Cells of Helicobacter pylori

open access: yesInternational Journal of Electrochemical Science, 2016
The difference of the electrical potential across the membrane of Helicobacter pylori has applied to investigate the electron transfer between the membrane cells of Helicobacter pylori bacteria and the selected fullerenes Cn.
Nargese Zolfaghar Karahrudi   +1 more
doaj   +1 more source

Lewis Acid‐Catalyzed Strain‐Enabled (3+3) Annulation of Bicyclo[1.1.0]Butanes With Indolylalcohols: Synthesis of Indole‐Fused Aza‐Bicyclo[3.1.1]Heptanes

open access: yesAdvanced Science, EarlyView.
Bicyclo[1.1.0]butanes undergo a Lewis acid‐catalyzed formal (3 + 3) annulation with indolyl alcohols to furnish indole‐fused aza‐bicyclo[3.1.1]heptanes. Strain‐release‐driven C‐C bond formation, followed by C‐N bond formation via ring expansion, enables the rapid assembly of rigid, sp3‐rich bicyclic architectures under mild reaction conditions ...
Mainak Dey   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy