scholarly journals 2-Hydroxy-3-octyloxybenzaldehyde

Molbank ◽  
10.3390/m1264 ◽  
2021 ◽  
Vol 2021 (3) ◽  
pp. M1264
Author(s):  
Julia V. Novoselova ◽  
Anatoliy A. Vereshchagin ◽  
Arseniy Y. Kalnin ◽  
Daniil A. Lukyanov ◽  
Oleg V. Levin
Keyword(s):  
Mass Spectrometry ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
High Resolution ◽  
13C Nmr ◽  
Nmr Spectra ◽  
High Resolution Mass Spectrometry ◽  
13C Nmr Spectra ◽  
1H And 13C Nmr ◽  
Resolution Mass

Herein, we report the chromatography-free synthesis of 2-hydroxy-3-octyloxybenzaldehyde by the alkylation of 2,3-dihydroxybenzaldehyde as a promising precursor for new SalEn-type complexes with transition metals. The structure of the product is elucidated by means of 1H and 13C-NMR spectra, high-resolution mass spectrometry with electrospray ionization (ESI-HRMS) and Fourier-transform infrared spectroscopy (FTIR).

scholarly journals (R,S)-5-(4-Chlorophenyl)-3-{(E)-2-[(R,S)-2,6,6-trimethylcyclohex-2-en-1-yl]vinyl}-4,5-dihydro-1H-pyrazole-1-carboximidamide Hydrochloride

Molbank ◽  
10.3390/m1046 ◽  
2019 ◽  
Vol 2019 (1) ◽  
pp. M1046
Author(s):  
Michele Carvalho ◽  
Lucas Pizzuti
Keyword(s):  
High Resolution ◽  
Silica Gel ◽  
13C Nmr ◽  
Broad Spectrum ◽  
Ultrasonic Irradiation ◽  
Potassium Hydroxide ◽  
Nmr Spectra ◽  
13C Nmr Spectra ◽  
1H And 13C Nmr ◽  
Resolution Mass

Pyrazoline and amidine motifs are important in medicinal chemistry due to their broad spectrum of bioactivities. This work’s goal was to synthesize a new hybrid amidino pyrazoline from terpenyl chalcone. The chosen method consists of making the terpenyl chalcone react with aminoguanidine hydrochloride in the presence of potassium hydroxide using ethanol as solvent. The reaction was carried out under ultrasonic irradiation. The resulting terpenyl amidino pyrazoline was isolated after separation in a silica-gel chromatographic column in 86% of yield. The product structure was confirmed by the analysis of the high resolution mass, 1H and 13C-NMR spectra. The data was consistent with the expected structure. In summary, the method was efficient for the synthesis of a new hybrid terpenyl amidino pyrazolines under sonochemical conditions.

scholarly journals Selectfluor-triggered fluorination/cyclization of o-hydroxyarylenaminones: A facile access to 3-fluoro-chromones

2020 ◽  
pp. 174751982092308
Author(s):  
Yanqin Wang ◽  
Biao Hu ◽  
Qiaohe Zhang ◽  
Siyun Zhao ◽  
Yuxuan Zhao ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
13C Nmr ◽  
Potassium Carbonate ◽  
High Resolution Mass Spectrometry ◽  
Reactive Intermediates ◽  
Cyclization Reaction ◽  
Plausible Mechanism ◽  
Tandem Cyclization ◽  
Resolution Mass

A fast and efficient Selectfluor-triggered fluorination/cyclization reaction of o-hydroxyarylenaminones has been successfully developed. The reaction successfully provides an expedient method for the synthesis of 3-fluoro-chromones promoted by potassium carbonate, which shows readily available starting materials and is easy to operate. In addition, a plausible mechanism of this tandem cyclization reaction was proposed where 4 H-chromen-4-one, 2-(dimethylamino)-3,3-difluorochroman-4-one, and 3,3-difluoro-2-hydroxychroman-4-one were not found to be the reactive intermediates. Moreover, these novel compounds have been obtained in moderate to good yields, and their structures have been confirmed by 1H NMR, 13C NMR, and high-resolution mass spectrometry.

scholarly journals Szentiamide, an N-formylated Cyclic Depsipeptide from Xenorhabdus szentirmaii DSM 16338T

2011 ◽  
Vol 6 (9) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Birgit Ohlendorf ◽  
Sven Simon ◽  
Jutta Wiese ◽  
Johannes F. Imhoff
Keyword(s):  
Mass Spectrometry ◽  
Amino Acids ◽  
High Resolution ◽  
Nmr Spectra ◽  
High Resolution Mass Spectrometry ◽  
Culture Broth ◽  
Two Dimensional ◽  
Cyclic Depsipeptide ◽  
High Resolution Mass ◽  
Resolution Mass

Szentiamide (1) a new cyclic hexadepsipeptide was isolated from the culture broth of the entomopathogenic bacterium Xenorhabdus szentirmaii DSM 16338T. The structure was elucidated by analysis of one- and two-dimensional NMR spectra and high resolution mass spectrometry. The amino acids were determined to be D-leucine, L-threonine, D-phenylalanine, D-valine, L-tyrosine and L-tryptophane after hydrolysis and derivatization with D-FDVA [ Nα-(2,4-dinitro-5-fluorophenyl)-D-valinamide].

scholarly journals 4-(7-Bromobenzo[d][1,2,3]thiadiazol-4-yl)morpholine

Molbank ◽  
10.3390/m1202 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1202
Author(s):  
Nikita Gudim ◽  
Ekaterina Knyazeva ◽  
Natalia Obruchnikova ◽  
Oleg Rakitin ◽  
Vadim Popov
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
13C Nmr ◽  
High Resolution Mass Spectrometry ◽  
Nitrogen Heterocycles ◽  
X Ray ◽  
Photovoltaic Materials ◽  
Resolution Mass

Dibromoderivatives of benzofused chalcogen-nitrogen heterocycles are important precursors in the synthesis of various photovoltaic materials. 4,7-Dibromobenzo[d][1,2,3]thiadiazole is a practically unexplored compound in this series. In this communication, it was shown that the nucleophilic substitution of 4,7-dibromobenzo[d][1,2,3]thiadiazole with morpholine gave selectively 4-substituted product—4-(7-bromobenzo[d][1,2,3]thiadiazol-4-yl)morpholine. The structure of the newly synthesized compound was established by means of elemental analysis, high resolution mass-spectrometry, 1H, 13C NMR, and IR spectroscopy, mass-spectrometry, and X-ray analysis.

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