scholarly journals Synthesis and characterization of 2-pyridineformamide 3-pyrrolidinylthiosemicarbazone

2013 ◽  
Vol 29 ◽  
pp. 28-33
Author(s):  
B. Shakya ◽  
P. N. Yadav
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectrum ◽  
Nmr Spectroscopy ◽  
13C Nmr Spectroscopy ◽  
Synthesis And Characterization ◽  
Ionization Mass ◽  
Transamination Reaction ◽  
Ionization Mass Spectrum ◽  
Esi Mass Spectrometry

Pyrrolidine-1-carbothiohydrazide was prepared by the transamination reaction of 4-methyl-4-phenyl-3-thiosemicarbazide with pyrrolidine in MeCN. 2-pyridineformamide 3-pyrrolidinyl-thiosemicarbazone (HAmPyrr) was synthesized by the reduction of cyanopyridine in the presence of pyrrolidine-1-carbothiohydrazide in MeOH with Na metal. The synthesized compound was characterized by elemental analysis, IR, 1H-NMR, 13C-NMR spectroscopy and ESI mass spectrometry. The prominent (M+1) peak (m/z) of HAmPyrr in the electron spray ionization mass spectrum was found at 250.09 which correspond to the molecular ion plus H. DOI: http://dx.doi.org/10.3126/jncs.v29i0.9234Journal of Nepal Chemical SocietyVol. 29, 2012Page: 28-33Uploaded date : 12/3/2013

scholarly journals Synthesis and Characterization of New Silver (I) N-Heterocyclic Ccarbene Ccomplex Dderived from Imidazol-2-ylidene salt

2018 ◽  
Vol 28 (2) ◽  
pp. 55
Author(s):  
Mohammedl Mujbe Hasson
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Room Temperature ◽  
13C Nmr Spectroscopy ◽  
Synthesis And Characterization ◽  
Imidazolium Salt ◽  
In Situ Method

A new N, N'-imidazolium salt 1-(2,6-diisopropylphenyl)-3- (4,6-dimorpholino -1,3,5-traizine-2-yl)-1H-imidazol-3-ium chloride) as a precursor of N - heterocyclic carbene ligand was prepared via the reaction of 1 - (2, 6 - diisopropyl phenyl - 1H - imidazole) with 1, 3, 5 - triazine derivative bearing morpholine substituent (2, 6 -dimorpholine - 6- chloro-1, 3, 5-triaziazine). Linear coordi-nated Ag (І) NHC complex was synthesised via deprotonation of the imidazolium salt and reac-tion with Ag2O in darkness at room temperature by in situ method. The complex was synthesised for using as transfer agent to prepare another transition metals complexes by transmetallation method in the future. The imidazolium salt and their silver complex have been characterized by 1 H and 13C NMR spectroscopy as well as mass spectrometry.

scholarly journals (2S,3R,6R)-2-[(R)-1-Hydroxyallyl]-4,4-dimethoxy-6-methyltetrahydro-2H-pyran-3-ol

Molbank ◽  
10.3390/m1140 ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. M1140
Author(s):  
Jack Bennett ◽  
Paul Murphy
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
13C Nmr ◽  
Conjugate Addition ◽  
13C Nmr Spectroscopy ◽  
One Pot ◽  
1H And 13C Nmr ◽  
Esi Mass Spectrometry ◽  
The One

(2S,3R,6R)-2-[(R)-1-Hydroxyallyl]-4,4-dimethoxy-6-methyltetrahydro-2H-pyran-3-ol was isolated in 18% after treating the glucose derived (5R,6S,7R)-5,6,7-tris[(triethylsilyl)oxy]nona-1,8-dien-4-one with (1S)-(+)-10-camphorsulfonic acid (CSA). The one-pot formation of the title compound involved triethylsilyl (TES) removal, alkene isomerization, intramolecular conjugate addition and ketal formation. The compound was characterized by 1H and 13C NMR spectroscopy, ESI mass spectrometry and IR spectroscopy. NMR spectroscopy was used to establish the product structure, including the conformation of its tetrahydropyran ring.

The Synthesis and Characterization of Nitrooxy- and Nitrosooxyborazine Compounds

2014 ◽  
Vol 69 (11-12) ◽  
pp. 1241-1247
Author(s):  
Thomas M. Klapötke ◽  
Magdalena Rusan
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Vibrational Spectroscopy ◽  
Elemental Analysis ◽  
Experimental Results ◽  
Synthesis And Characterization ◽  
The Impact

Abstract B-Nitrosooxypentamethylborazine, B-nitrooxypentamethylborazine and B-trinitrooxy-N-trimethylborazine have been synthesized and characterized by 1H, 13C, 11B, and 14N NMR spectroscopy, mass spectrometry, vibrational spectroscopy and elemental analysis. The 11B NMR shifts were calculated and compared to the experimental results. The decomposition temperatures and the impact and friction sensitivities of these compounds have been determined as well.

Synthesis and Characterization of Tetrakis(pentafluoroethyl)germane

Synthesis ◽  
2017 ◽  
Vol 49 (11) ◽  
pp. 2389-2393 ◽  
Author(s):  
Stefanie Pelzer ◽  
Beate Neumann ◽  
Hans-Georg Stammler ◽  
Nikolai Ignat’ev ◽  
Reint Eujen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Diffraction Analysis ◽  
Spectroscopic Characterization ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Comprehensive Characterization

This paper describes the synthesis and comprehensive characterization of tetrakis(pentafluoroethyl)germane. In addition to a complete NMR spectroscopic characterization, including the rarely used 73Ge NMR spectroscopy, Ge(C2F5)4 was studied by IR spectroscopy, mass spectrometry as well as X-ray diffraction analysis. A 73Ge NMR investigation as well as an X-ray diffraction study of the related germane Ge(CF3)4 are also included.

Characterization of cyclodextrin complexes of camostat mesylate by ESI mass spectrometry and NMR spectroscopy

2009 ◽  
Vol 938 (1-3) ◽  
pp. 192-197 ◽  
Author(s):  
Soonho Kwon ◽  
Woonhyoung Lee ◽  
Hye-Jin Shin ◽  
Sung-il Yoon ◽  
Yun-tae Kim ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Cyclodextrin Complexes ◽  
Esi Mass Spectrometry

Synthesis and characterization of a new Keggin anion: [BeW12O40]6−

2014 ◽  
Vol 50 (65) ◽  
pp. 9083-9085 ◽  
Author(s):  
Alexander V. Anyushin ◽  
Anton I. Smolentsev ◽  
Dmitry A. Mainichev ◽  
Cristian Vicent ◽  
Artem L. Gushchin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Cyclic Voltammetry ◽  
Synthesis And Characterization ◽  
Keggin Anion ◽  
X Ray ◽  
Esi Mass Spectrometry

The first berillododecatungstate [BeW12O40]6− has been synthesized and characterized by X-ray analysis, cyclic voltammetry, ESI-mass spectrometry, and 9Be and 183W NMR.

Enzymatic and Chemical Synthesis and Characterization of Poly-6-O-(10-undecylenoyl) D-Glucose

2012 ◽  
Vol 550-553 ◽  
pp. 787-791
Author(s):  
Chao Wei ◽  
Yin Zhen Wang ◽  
Wei Yan ◽  
Ping Jia Yao ◽  
Yuan An Wei
Keyword(s):  
Nmr Spectroscopy ◽  
Molecular Sieves ◽  
Immobilized Lipase ◽  
13C Nmr Spectroscopy ◽  
Synthesis And Characterization ◽  
Undecylenic Acid ◽  
Optimal Conditions ◽  
Release Agent ◽  
O 10

Immobilized lipase Novozym-435 catalyzed regioselective synthesis of glucose and undecylenic acid(UA) to produce glucose mono-ester in Organic solvents was investigated. Reactionconditions were tested in order to produce the mono-ester more rapidly and in higher yield, the optimal conditions were obtained as: temperature at 50°C,mole ratio of glucose toUA of 1:2,concentration of molecular sieves and enzyme used as 0.56mg/mL and 10mg/mL respectively . After the reaction, product was purified, and characterized by MS and 13C NMR spectroscopy, and determined as 6-O-(10-undercylenoyl)-D-glucose, The product was used as the starting material, K2S2O8 as a chemical initiator, to polymerize and form the sugar-containing polymer, which could be used for medicine release agent and other application of biological materials.

Synthesis and Characterization of Enantiopure Tribenzotriquinacene Dimers Bearing a Platinum-Diacetylene Unit

Synthesis ◽  
2019 ◽  
Vol 51 (10) ◽  
pp. 2116-2121 ◽  
Author(s):  
Wen-Rong Xu ◽  
Xin-Rui Wang ◽  
Hak-Fun Chow ◽  
Dietmar Kuck
Keyword(s):  
Crystal Structure ◽  
Mass Spectrometry ◽  
31P Nmr ◽  
Synthesis And Characterization ◽  
31P Nmr Spectroscopy ◽  
Enantiomerically Pure ◽  
X Ray ◽  
Esi Mass Spectrometry ◽  
13C And 31P Nmr

A pair of enantiomerically pure metallodimers containing two deeply concave tribenzotriquinacene (TBTQ) units linked by a platinum-diacetylene unit were synthesized. Such linear metal-centered TBTQ dimers are considered as edges of metallosquares and metallocubes that bear four or eight mutually syn-oriented TBTQ bowls at their tips, respectively. The structures of the metallodimers were characterized by 1H, 13C and 31P NMR spectroscopy, ESI mass spectrometry, and circular dichroism. The single X-ray crystal structure of (+)-enantiomer confirmed the absolute configuration of the metallodimers and revealed an edge (tip-to-tip) length of 18.456 Å and an approximated syn-orientation of the two TBTQ bowls in the solid state.

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