Results 21 to 30 of about 19,229 (196)

2-(1,3-Benzothiazol-2-yliminomethyl)-2-naphthol

Acta Crystallographica Section E, 2009
In the title molecule, C18H12N2OS, the dihedral angle between the two fused-ring systems is 7.2 (1)°. The hydroxy group forms an intramolecular hydrogen bond with the imino group.
Khadija O. Badahdaha, Abdullah Mohamed Asiri, Seik Weng Ng   +2 more
doaj   +1 more source

Mannich Compounds of 2-Naphthol Derivatives.

Chemical and Pharmaceutical Bulletin, 1964
The Mannich reactions of some 2-naphthol and its tetrahydro compounds were studied. The Mannich reaction of 2-naphthol (I) by morpholine gave 1-(morpholinomethyl) compound (II), which was also obtained by same reaction of 2-hydroxy-1-naphthoic acid (V). On the other hand, the Mannich reaction of 2-tetralol (XVI) gave 3-(morpholinomethyl) derivative (XV)
Mori, Hiromu, Gandhi, VipichandraS., Schwenk, Erwin   +2 more
openaire   +3 more sources

1-(4-Methylphenyldiazoniumyl)-2-naphtholate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2007
In the title compound, C(17)H(14)N(2)O, the dihedral angle between the benzene ring and naphthalene ring system is 11.0 (3)°. The azo group adopts an anti configuration and an intra-molecular N-H⋯O hydrogen bond exists. Mol-ecules are packed by π-π inter-actions between adjacent mol-ecule (closest approach between centroids of benzene and naphthalene ...
Chuan-Ming Jin, Hao Li, Zhen-Xing Zhong, Ling-Yan Wu   +3 more
openaire   +3 more sources

Spectrofluorimetric-based approach to screen urine contamination in drinking water: A step toward the development of screening method for leptospirosis

Indian Journal of Public Health, 2022
Hygiene hypothesis and sanitization are two important pivots of modern civilization. The drinking water should be free from urine and stool contamination. Coliform test is popular for understanding feces contamination.
Deepak Kumar, Deepak Yadav, Sumanpreet Kaur, Sheemona Chowdhary, Rajasri Bhattacharyya, Dibyajyoti Banerjee   +5 more
doaj   +1 more source

Light‐Controlled Modulation of 15‐Lipoxygenase‐1 Regulates Intestinal Inflammatory Signaling

Angewandte Chemie, EarlyView.
The developed target‐guided strategy enables the rational design of diazo‐based photoswitchable inhibitors of 15‐lipoxygenase‐1. Distinct molecular architectures program opposite light‐dependent activity, allowing on‐demand control of enzyme inhibition.
Anastasia Louka, Eirini‐Eleni Kalaitzaki, Athanasios Panousis, Sotirios Bonoras, Charalampos Livas, George Froudakis, Ioannis Drygiannakis, Athina Damianaki, George Kolios, Vassilis Valatas, Nikolaos Eleftheriadis   +10 more
wiley   +2 more sources

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

Urinary Naphthol as a Biomarker of Exposure: Results from an Oral Exposure to Carbaryl and Workers Occupationally Exposed to Naphthalene

Toxics, 2017
Urinary naphthol is an established human biomarker used for assessing both occupational and environmental exposure. However, 1-naphthol is a metabolite of the insecticide carbaryl while both the 1- and 2-isomers are metabolites of naphthalene.
Craig Sams
doaj   +1 more source

Carboxylation of 2-Naphthol in Kerosene

Journal of the Japan Petroleum Institute, 2008
これまでの研究において，2-ナフトールのカルボキシル化をアニソール中で行うと，従来のKolbe-Schmitt反応では生成されにくい3-ヒドロキシ-2-ナフトエ酸や6-ヒドロキシ-2-ナフトエ酸が得られることを見出してきた。ここでは，6-ヒドロキシ-2-ナフトエ酸の合成を目的とし，ケロシンを用いて2-ナフトールのカルボキシル化を行い，反応温度，反応時間という反応条件およびアルカリ金属種が生成物選択性に及ぼす影響について検討した。原料のアルカリ金属種を変化させると，ナトリウム塩と比較してカリウム塩の方が収率は高い値を示した。また，6-ヒドロキシ-2-ナフトエ酸の選択率に着目すると，ナトリウム塩ではわずかに生成したのみであったが，カリウム塩では高選択率を得ることができた。カリウム塩を原料とした場合 ...
Takayuki Iijima, Daisuke Takagi, Tatsuaki Yamaguchi   +2 more
openaire   +2 more sources

An Enantioselective Alkene Aminoarylation to Form Chiral Indolines via Electrostatically‐Directed Palladium Catalysis

Angewandte Chemie, EarlyView.
Enantioselective aminoarylation of ortho‐allyl anilines is achieved under mild conditions. Key to success is the electrostatically‐directed nature of the key aminopalladation step, achieved by using the sulfonated chiral ligand sSPhos on palladium. A detailed study of electronic trends allows tuning of the sulfonamide protecting group to enable good ...
Max Kadarauch, Paul T. Jirsch, H. Erik Diepers, Hamzah Sharif, Robert J. Phipps   +4 more
wiley   +2 more sources

High-Performance Liquid Chromatographic Determination of Naphtholsulfonic Acids

CHIMIA, 1979
A HPLC-method for the quantitative analysis of mixed solutions of 2-naphthol-5,7-disulfonic acid and 2-naphthol-7-sulfonic acid was developed. A complete reproducible separation of these compounds in a very short time could be reached by using a ...
Luca Rossinelli, Hans Thies, Werner Richarz   +2 more
doaj   +1 more source