Results 101 to 110 of about 1,561 (166)

A novel DHP-NH2 fluorescent dye for the determination of water content in organic solvents, rice, and aspirin: DFT calculations

Sensors International
A novel aminodihydropyridine derivative (DHP-NH2) was synthesized from hydrazine via a tandem cyclotrimerization of methyl propiolate. DHP-NH2 distinguishably exhibited either strong fluorescence in aprotic solvents or weak fluorescence in protic ...
Kittiporn Nakprasit, Panyakorn Taweechat, Pornthep Sompornpisut, Mongkol Sukwattanasinitt, Waroton Paisuwan, Anawat Ajavakom   +5 more
doaj   +1 more source

Retro‐Hetero‐Michael Addition Strategies in Organic Synthesis

European Journal of Organic Chemistry, Volume 29, Issue 32, 24 August 2026.
In this review, synthetic approaches to carbo‐ and heterocyclic compounds, including natural products, published in the last 15 years (2011–2025) which have either relied upon or included a retro‐hetero‐Michael addition step at any stage are discussed.
Dina Scarpi, Ernesto G. Occhiato
wiley   +1 more source

One-Electron Reduction Potential for Oxygen- and Sulfur-Centered Organic Radicals in Protic and Aprotic Solvents

, 2016
We estimated one-electron reduction potentials of redox-active organic molecules for a spectrum of eight different functional groups (phenoxyl, p-benzoquinone, phenylthiyl, p-benzodithiyl, carboxyl, benzoyloxyl, carbthiyl, and benzoylthiyl) in protic ...
Ernst-Walter Knapp (1648654), Marcel Schmidt am Busch (365006)   +1 more
core   +1 more source

Bromination of Alkenes and Related Compounds by Use of Benzyltrimethylammonium Tribromide in Aprotic and Protic Solvents

The reaction of alkenes and related compounds (1) with benzyltrimethyl-ammonium tribromide (BTMA Br_3) in aprotic solvents such as dichloromethane and chloroform gave 1, 2-dibromo adducts in fairly good yields.
柿並, 孝明, Tashiro, Masashi, カジガエシ, ショウジ, Moriwaki, Masayuki, フジサキ, シズオ, タシロ, マサシ, 藤崎, 静男, カキナミ, タカアキ, Fujisaki, Shizuo, 梶返, 昭二, 田代, 昌士, Kajigaeshi, Shoji, Kakinami, Takaaki   +12 more
core  

The dehydrochlorination of 1,1-diaryl-2,2,2-trichloroethanes in protic and dipolar aprotic solvents

, 1973
PART I A general introduction is given to the mechanisms of olefin-forming β-elimination. The development of mechanistic criteria and their application to the various reactions is discussed.
Wong, Ronald James
core  

Multiparametric evaluation of structure-photophysical activity correlation: A case study of pyrene-tethered chalcone

Acta Chimica Slovenica
Molecular structures with unique functionalities show interesting photophysical properties. The structure-photophysical activity correlation of synthesized pyrene tethered chalcone (PTC) molecule was envisaged from its solvatochromic shift in 14 ...
Moumin Husain Dar, Syed Andleeb Ishaq, Parvaiz Ahmad Dar, Albieza, Irshad Mohiuddin, Masood Ahmad Rizvi   +5 more
doaj   +1 more source

Substituent effects and solvents

, 2017
The source data matrix containing 428 data series describing substituent effects from meta and para position (25 substituents from both position) in water, protic and aprotic solvents was investigated by using conjugated deviation analysis and principal ...
O Pytela, M Ludwig
core   +1 more source

Ag nanoparticles on arginine-cyanoguanidine functionalized magnetic g-C3N4: A catalyst for nitroaromatic hydrogenation and regioselective click reactions

Heliyon
This study describes the development of a novel hybrid nanocatalyst that was obtained by doping magnetic g-C3N4 with Ag nanoparticles and modifying it with arginine and cyanoguanidine (Ag@Fe3O4-g-C3N4-Arg-CG).
Mansoureh Daraie, Mahmood Tajbakhsh, Ali Ayati, Sara Rashidi   +3 more
doaj   +1 more source

Efficient Production and Isolation of 3‐Acetamido‐5‐Acetylfuran from N‐Acetyl‐D‐Glucosamine within Protic Ionic Liquids

ChemistryOpen
The transformation of chitin and its monomer N‐acetylglucosamine (NAG) to high‐value organonitrogen chemicals has attracted increasing interest, with 3‐acetamido‐5‐acetylfuran (3A5AF) proposed as a versatile platform chemical.
Emma L. Matthewman, Prof. Jonathan Sperry, Dr. Cameron C. Weber   +2 more
doaj   +1 more source

Polar protic and aprotic solvents induced nonlinear optical and optical limiting properties of Xanthene dye: A DFT Study

Chemical Physics Impact
Rose Bengal (RB), a xanthene dye, exhibits exceptional nonlinear optical (NLO) properties in both polar protic and aprotic solvents, including ethanol, methanol, 1-propanol, and acetone.
Natarajan Arumugam, Abdulrahman I. Almansour, Rohith Ramasamy, Rajadurai Vijay Solomon, A.G. Bharathi Dileepan, Madhappan Santhamoorthy, S. Jeyaram   +6 more
doaj   +1 more source