scholarly journals Crystal structure, 1H and 13C NMR spectral studies of 1,2,4,5-oxadiazaborole derivatives

2019 ◽  
Author(s):  
Meryem Pir ◽  
Hikmet Ağırbaş ◽  
Onur Şahin
Keyword(s):  
Crystal Structure ◽  
13C Nmr ◽  
Spectral Studies ◽  
1H And 13C Nmr

A Domino Reaction for the Synthesis of Novel 1,3-Dihydrofuro[3,4-c]pyridines from Pyridoxal and Ketones

Synthesis ◽  
2020 ◽  
Vol 53 (02) ◽  
pp. 365-370
Author(s):  
Lucas Pizzuti ◽  
Izamara Casadia ◽  
Thalita O. Daher ◽  
Sidnei Moura ◽  
Davi F. Back ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Room Temperature ◽  
13C Nmr Spectroscopy ◽  
Domino Reaction ◽  
Alkyl Aryl ◽  
1H And 13C Nmr ◽  
X Ray ◽  
Pyridine Series

A convenient domino route for the synthesis of novel 1,3-dihydrofuro[3,4-c]pyridines from pyridoxal and alkyl, aryl or heteroaryl ketones under basic conditions is reported. A series of nine derivatives is obtained in 53–90% yields after stirring reactants for 48 hours at room temperature. Most products are easily isolated by filtration followed by recrystallization from ethanol. All products were fully characterized by FTIR, HRMS, and 1H and 13C NMR spectroscopy. The X-ray crystal structure of a representative example of the 1,3-dihydrofuro[3,4-c]pyridine series is also presented.

scholarly journals Synthesis of ruthenium(II) carbonyl complexes with 2-monosubstituted and 1,2-disubstituted benzimidazoles

2009 ◽  
Vol 74 (10) ◽  
pp. 1085-1096 ◽  
Author(s):  
Naik Krishnamurthy ◽  
Narashimaiah Shashikala
Keyword(s):  
Elemental Analysis ◽  
13C Nmr ◽  
Spectral Studies ◽  
Carbonyl Complex ◽  
Carbonyl Complexes ◽  
Conductivity Measurements ◽  
1H And 13C Nmr

The reaction of the polymeric carbonyl complex [RuCl2(CO)2]x with 2-monosubstituted and 1,2-disubstituted benzimidazoles and 1,4-bis(benzimidazol- 2-yl)benzene (L9) in 2-methoxyethanol produces various coloured complexes of the formulae [Ru(CO)2Cl2(L)2]?xH2O (L = 1-(o-hydroxybenzyl)-2-(o-hydroxyphenyl)benzimidazole (L1), 1-(o-hydroxyphenyl)benzimidazole (L4), 1-(p-hydroxyphenyl)benzimidazole (L5), 1-(p-chlorobenzyl)-2-p-chlorophenyl) benzimidazole (L7), 1-[1-(dimethylamino)benzyl]-2-[1-(dimethylamino) phenyl]benzimidazole (L10), x = 0; L = 2-benzylbenzimidazole (L8), 1,4-bis(benzimidazol-2-yl)benzene (L9), x = 2; L = 1-(o-chlorobenzyl)-1-(o-chlorophenyl)benzimidazole (L6); x = 3), [Ru(CO)2Cl(L2)3]Cl?3H2O and [Ru(CO)2(L3)4]Cl2?3H2O (L2 = 1-(m-hydroxybenzyl)-2-(m-hydroxyphenyl)- benzimidazole; L3 = 1-(p-hydroxybenzyl)-2-(p-hydroxyphenyl)benzimidazole). The complexes were characterized by elemental analysis, conductivity measurements, as well as infrared, electronic, 1H- and 13C-NMR spectral studies.

ChemInform Abstract: 2,4-Dihalogenoquinolines. Synthesis, Orientation Effects and 1H and 13C NMR Spectral Studies.

ChemInform ◽  
2010 ◽  
Vol 25 (8) ◽  
pp. no-no
Author(s):  
A. G. OSBORNE ◽  
J. M. BULEY ◽  
H. CLARKE ◽  
R. C. H. DAKIN ◽  
P. I. PRICE
Keyword(s):  
13C Nmr ◽  
Spectral Studies ◽  
1H And 13C Nmr ◽  
Orientation Effects
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