Mass spectrometry of nitrogen heterocycles. 3. Thermal intramolecular cyclization of 2-azolylaminopyridines

1991 ◽  
Vol 27 (1) ◽  
pp. 84-88
Author(s):  
V. L. Rusinov ◽  
N. A. Klyuev ◽  
V. G. Baklykov ◽  
T. L. Pilicheva ◽  
A. A. Tumashov
Keyword(s):  
Mass Spectrometry ◽  
Intramolecular Cyclization ◽  
Nitrogen Heterocycles

Mass Spectrometry for Structure Determination. Simple Nitrogen Heterocycles

1964 ◽  
Vol 29 (7) ◽  
pp. 2065-2066 ◽  
Author(s):  
A. L. Jennings ◽  
James E. Boggs
Keyword(s):  
Mass Spectrometry ◽  
Structure Determination ◽  
Nitrogen Heterocycles

scholarly journals A Synthesis of 4-Chloro-2-(trichloromethyl)pyrimidines and Their Study in Nucleophilic Substitution

Synthesis ◽  
2018 ◽  
Vol 51 (02) ◽  
pp. 530-537 ◽  
Author(s):  
Moisés Romero-Ortega ◽  
Michelle Trujillo-Lagunas ◽  
Ignacio Medina-Mercado ◽  
Ivann Zaragoza-Galicia ◽  
Horacio Olivo
Keyword(s):  
Nucleophilic Substitution ◽  
Intramolecular Cyclization ◽  
Nitrogen Heterocycles ◽  
Cyclization Reaction ◽  
Substitution Reactions ◽  
Pyrimidine Derivatives ◽  
One Pot ◽  
Acyl Chlorides ◽  
Nucleophilic Substitution Reactions ◽  
One Pot Synthesis

A convenient two-step, one-pot synthesis of 4-chloro-2-(trichloromethyl)pyrimidines starting from 2-(trichloromethyl)-1,3-diazabutadienes is described. These nitrogen heterocycles were prepared by a sequential acylation/intramolecular cyclization reaction between 2-(trichloromethyl)-1,3-diazabutadienes and acyl chlorides in the presence of triethylamine followed by treatment with POCl3. This is the first report for the synthesis of this type of 4-chloro-2-(trichloromethyl)pyrimidine derivatives and serves as a source for a wide variety of other substituted pyrimidines by nucleophilic substitution reactions.

Synthesis of Nitrogen Heterocycles by Intramolecular Cyclization of Alkenyl N-Acylaminophthalimides Using Phenyliodine(III) Bis(trifluoroacetate) (PIFA)

Heterocycles ◽  
2008 ◽  
Vol 75 (5) ◽  
pp. 1133 ◽  
Author(s):  
Yasuo Kikugawa ◽  
Masato Tsukamoto ◽  
Kousuke Murata ◽  
Takeshi Sakamoto ◽  
Setsuo Saito
Keyword(s):  
Intramolecular Cyclization ◽  
Nitrogen Heterocycles

Characterization and differentiation of ruthenium(II) complexes with 1,4,7-trithiacyclononane and nitrogen heterocycles by electrospray mass spectrometry

2001 ◽  
Vol 36 (5) ◽  
pp. 529-537 ◽  
Author(s):  
M. Graça O. Santana-Marques ◽  
Francisco M. L. Amado ◽  
A. J. Ferrer Correia ◽  
Mónica Lucena ◽  
João Madureira ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Nitrogen Heterocycles

Studies on Instructive Construction of exo-Olefin Terminated Five- and Six-Membered Nitrogen Heterocycles: SmI2-Mediated Intramolecular Cyclization of Haloalkynals

2018 ◽  
Vol 83 (17) ◽  
pp. 10636-10645 ◽  
Author(s):  
Kazunori Takahashi ◽  
Kei Fukushima ◽  
Marina Seto ◽  
Azusa Togashi ◽  
Yuichi Arai ◽  
...  
Keyword(s):  
Intramolecular Cyclization ◽  
Nitrogen Heterocycles

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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