The General Nature of the Proportionality of Polar Effects of Substituent Groups in Organic Chemistry

Comparative QSAR: Toward a Deeper Understanding of Chemicobiological Interactions.

A compendium of phase change enthalpies published in 2010 is updated to include the period 1880–2015. Phase change enthalpies including fusion, vaporization, and sublimation enthalpies are included for organic, organometallic, and a few inorganic compounds. Part 1 of this compendium includes organic compounds from C1 to C10. Part 2 of this compendium, to be published separately, will include organic and organometallic compounds from C11 to C192. Sufficient data are presently available to permit thermodynamic cycles to be constructed as an independent means of evaluating the reliability of the data. Temperature adjustments of phase change enthalpies from the temperature of measurement to the standard reference temperature, T = 298.15 K, and a protocol for doing so are briefly discussed.

Phase Transition Enthalpy Measurements of Organic and Organometallic Compounds. Sublimation, Vaporization and Fusion Enthalpies From 1880 to 2015. Part 1. C1-C10

Hf-, Sn-, and Zr-Beta zeolites catalyze the cross-aldol condensation of aromatic aldehydes with acetone under mild reaction conditions with near quantitative yields NMR studies with isotopically labeled molecules confirm that acid-base pairs in the Si-O-M framework ensemble promote soft enolization through α-proton abstraction The Lewis acidic zeolites maintain activity in the presence of water and, unlike traditional base catalysts, in acidic solutions

Acid-Base Pairs in Lewis Acidic Zeolites Promote Direct Aldol Reactions by Soft Enolization.

Chalcones and their analogs have been an area of great interest in recent years. Numerous research papers have been published, and chalcones continue to show promise for new drug investigations. Researchers have explored new approaches for the synthesis of chalcone derivatives, which have revealed an array of pharmacological and biological effects. These chalcone derivatives have shown important antimicrobial, antifungal, anti-mycobacterial, antimalarial, antiviral, anti-inflammatory, antioxidant, antileishmanial anti-tumor, and anticancer properties. This review highlights the synthesis and pharmacological properties of chalcone derivatives.

Synthesis and pharmacological properties of chalcones: a review

70. The influence of alkyl groups upon reaction velocities in solution. Part IV. The alkaline and acid hydrolyses of the ethyl esters of the lower saturated aliphatic acids in aqueous acetone

David P. Evans

Papers

70. The influence of alkyl groups upon reaction velocities in solution. Part IV. The alkaline and acid hydrolyses of the ethyl esters of the lower saturated aliphatic acids in aqueous acetone

294. Studies of the ortho-effect. Part III. Alkaline hydrolysis of benzoic esters

272. The influence of alkyl groups upon reaction velocities in solution. Part III. The alkaline hydrolysis of saturated aliphatic esters

CLXVII.—The lower trialkyl orthophosphates. Part I

245. Condensations of carbonyl compounds. A kinetic study of the reaction of acetophenone with benzaldehyde