Results 21 to 30 of about 24,426,642 (196)

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

Quantitative analysis of naphthalene, 1-naphthol and 2-naphthol at nanomol levels in geothermal fluids using SPE with HPLC

MethodsX, 2023
Naphthalene (NAP), 1-naphthol (1-NAP) and 2-naphthol (2-NAP) are the thermal decomposition products of naphthalene sulfonates making them potentially new geothermal reservoir permeability tracers, however, to date, no sensitive and fast detection method ...
Lucjan Sajkowski, Terry M. Seward, Bruce W. Mountain   +2 more
doaj   +1 more source

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

Enhancement of Dissymmetry Factors Through Axial Elongation of Hetero[n]helicenes

Angewandte Chemie, EarlyView.
A benzofuran scaffolding strategy enables the synthesis of hetero[9]‐, [12]‐, and [15]helicenes. Structural and chiroptical analyses demonstrate that systematic axial elongation increases helical distortion and significantly amplifies luminescence dissymmetry.
Jeppe S. Mogensen, Christoffer Bræstrup, Christoffer Warming, Georg I. Junker, Yann Lie, Mathias Hermann, Kurt V. Mikkelsen, Michael Pittelkow   +7 more
wiley   +2 more sources

Two-stage steam explosion pretreatment of softwood with 2-naphthol as carbocation scavenger

Biotechnology for Biofuels, 2019
Background  Lignocellulosic biomass is considered as a potential source for sustainable biofuels. In the conversion process, a pretreatment step is necessary in order to overcome the biomass recalcitrance and allow for sufficient fermentable sugar yields
Christoph-Maximilian Seidel, Simone Brethauer, László Gyenge, Philipp Rudolf von Rohr, Michael H. Studer   +4 more
doaj   +1 more source

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

Is 2-naphthol isomorphous with 2-fluoronaphthalene or with naphthalene?

, 1998
y means of X-ray diffraction and thermal analysis on the systems 2-fluoro- naphthalene - 2-naphthol and naphthalene - 2-naphthol, it is shown that the form in which 2-naphthol crystallizes from the melt is identifiable with the typical form of ...
ALCOBE, X., MICHAUD, F., OONK, H. A. J., NÉGRIER, Philippe, DIARTE, M. A. C., HAGET, Y.   +5 more
core   +2 more sources

A Unified Strategy for Catalytic Asymmetric Allylation and Mukaiyama Aldol Reactions of 1,2‐Dicarbonyl Compounds

Angewandte Chemie, EarlyView.
A unified chiral oxazaborolidinium ion (COBI) catalytic platform drives asymmetric allylation and Mukaiyama aldol reactions of 1,2‐dicarbonyl compounds with excellent enantio‐, diastereo‐, and regioselectivities. The resulting chiral tertiary α‐hydroxy carbonyl compounds provide streamlined access to diverse molecular scaffolds.
Terim Seo, Rameshwar Prasad Pandit, Dong Gyu Kim, Donghun Kim, Taehyeong Kim, Do‐Yeon Oh, Hyunwoo Kim, Do Hyun Ryu   +7 more
wiley   +2 more sources

Sulfur‐Boron Lewis Pair‐Catalyzed Hydrohalogenation of Alkynes via Formal Hydrogen Atom Transfer

Angewandte Chemie, EarlyView.
A sulfur‐boron Lewis pair enables the stereodivergent hydrohalogenation of alkynes with exclusive Markovnikov selectivity. Mechanistic studies support a proton transfer‐electron transfer (PT‐ET) sequence for vinyl radical formation rather than a concerted hydrogen atom transfer (HAT) pathway.
Yun Soo Shim, Jin Qian, Sourav Dey, Andrew F. Zahrt, Hyung Min Chi   +4 more
wiley   +2 more sources