The Conformation of Some 1,6-Disulfide-Bridged D-Hexopyranoses

2005 ◽  
Vol 58 (3) ◽  
pp. 199 ◽  
Author(s):  
Ethan D. Goddard-Borger ◽  
Brian W. Skelton ◽  
Robert V. Stick ◽  
Allan H. White
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
Similar Investigation ◽  
X Ray ◽  
X Ray Crystallography ◽  
Structure Determinations ◽  
Derivatives Of

The use of 1H NMR spectroscopy, in tandem with X-ray crystallography, has cast light on the conformation of the 1,6-disulfide-bridged derivatives of d-gluco-, d-manno-, d-allo-, d-galacto-, and d-talo-pyranose. A similar investigation was performed on the thiosulfinate derived from the d-gluco disulfide. Single-crystal X-ray structure determinations are reported for (1S,5S,6S,7S,8R)-6,7,8-tribenzoyloxy-9-oxa-2,3-dithiabicyclo[3.3.1]nonane, (1S,5S,6S,7R,8R)-6,7,8-tribenzoyloxy-9-oxa-2,3-dithiabicyclo[3.3.1]nonane, and (1S,2S,5S,6S,7S,8R)-6,7,8-triacetoxy-9-oxa-2,3-dithiabicyclo[3.3.1]nonane 2-oxide.

scholarly journals 2-(3,5-Dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine

Molbank ◽  
10.3390/m1077 ◽  
2019 ◽  
Vol 2019 (3) ◽  
pp. M1077
Author(s):  
Lan ◽  
Zheng ◽  
Wang
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
1H Nmr ◽  
Structure Determination ◽  
1H Nmr Spectroscopy ◽  
Pyrazole Ring ◽  
Hydrogen Atoms ◽  
X Ray ◽  
X Ray Crystallography

The compound 2-(3,5-dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine (1) was synthesized with a yield of 71% by the reaction of 1-(thiazolo[4,5-b]pyridine-2-yl)hydrazine and acetylacetone. The structure was characterized by a single-crystal X-ray structure determination as well as 1H and 13C{1H} NMR spectroscopy. X-ray crystallography on 1 confirms the molecule consists of a pyridine–thiazole moiety and the pyrazole ring, and all non-hydrogen atoms are planar.

Synthesis, Spectroscopic Characterization, and Structure of closo-1,10-B10H8F22- and Related Fluorinated Derivatives of B10H102-

1997 ◽  
Vol 62 (8) ◽  
pp. 1310-1324 ◽  
Author(s):  
Sergei V. Ivanov ◽  
Svetlana M. Ivanova ◽  
Susie M. Miller ◽  
Oren P. Anderson ◽  
Nikolai T. Kuznetsov ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Spectroscopic Characterization ◽  
X Ray ◽  
X Ray Crystallography ◽  
Fluorinated Derivatives ◽  
Derivatives Of

The treatment of salts of the B10H102- anion with the commercially available N-fluoro reagent 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (F-TEDA) resulted in the formation of fluorinated derivatives of this ten-vertex borane dianion. The effects of changing the solvent, temperature, and reagent stoichiometry were studied. The derivatives 1-B10H9F2-, 2-B10H9F2-, 1,2-B10H8F22-, 1,6-B10H8F22-, 1,10-B10H8F22-, and 1,2,10-B10H7F32- were examined by a combination of 11B and 19F NMR spectroscopy and by IR spectroscopy. The salt [Ph4P]2[1,10-B10H8F2] . 3 CH2Cl2 was structurally characterized by single-crystal X-ray crystallography: C51H48B10Cl6F2P2, monoclinic, C2/c, a = 13.8134(9), b = 19.141(1), c = 21.136(1) Å, β = 91.546(1)°, Z = 4, T = -100 °C, R = 0.077.

Encapsulation of L-Valine, D-Leucine and D-Methionine by Cucurbit[8]uril

CrystEngComm ◽  
2022 ◽  
Author(s):  
Zenghui Zhang ◽  
Rui-Lian Lin ◽  
Xiangyun Yu ◽  
Li-Xia Chen ◽  
Zhu Tao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
Binding Interactions ◽  
X Ray ◽  
X Ray Crystallography

The binding interactions of cucurbit[8]uril (Q[8]) with L-Valine, D-Leucine, and D-Methionine, both in aqueous solution and solid state, have been studied by 1H NMR spectroscopy and X-ray crystallography. 1H NMR...

N-Heterocyclic Carbene-facilated Condensation of 3-Methylphenylboronic Acid to the Boroxine

2013 ◽  
Vol 68 (5-6) ◽  
pp. 453-457 ◽  
Author(s):  
Dongxiang Zhang ◽  
Jie Li ◽  
Xiao Dong ◽  
Xing Zhou ◽  
Zhi Yang ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
1H Nmr ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Phenylboronic Acid ◽  
X Ray Diffraction ◽  
X Ray

The adduct of (3-MeC6H4)3B3O3 with an N-heterocyclic carbene (NHC=1,3-diethyl-4,5- dimethylimidazol-2-ylidene) was prepared by reacting 2.5 equiv. of 3-methylphenylboronic acid with 1 equiv. of the NHC. This reaction shows a novel carbene-facilitated condensation of substituted phenylboronic acid monomers. The structure of the compound (3-MeC6H4)3B3O3(NHC) (1) has been characterized by 1H NMR spectroscopy, elemental analysis, and single-crystal X-ray diffraction studies

scholarly journals Synthesis of Six and Seven-membered Heterocyclic Molecules Containing an Adamantyl Fragment and an X-ray Crystal Structure of (E)-N-(adamantan-1-yl)-1-(3-nitrophenyl)methanimine

2020 ◽  
Vol 17 (1(Suppl.)) ◽  
pp. 0272
Author(s):  
Ahmed Shukkur
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Nmr Spectroscopy ◽  
1H Nmr ◽  
Good Yield ◽  
1H Nmr Spectroscopy ◽  
X Ray ◽  
X Ray Crystallography ◽  
Heterocyclic Molecules ◽  
Citraconic Anhydride

       Our work included a synthesis of three new imine derivatives—1,3-thiazinan-4-one, 1,3-oxazinan-6-one and 1,3-oxazepin-4,7-dione—which contained an adamantyl fragment. These were produced via the condensation of the Schiff`s base (E)-N-(adamantan-1-yl)-1-(3-aryl)methanimine with 3-mercaptopropanoic acid; 3-chloropropanoic acid; and maleic, citraconic anhydride, respectively. These new imines were prepared via the condensation of adamantan-1-ylamine and 3-nitro-, 3-bromobenzaldehyde in n-BuOH. We obtained a good yield of products. FTIR, 1H NMR spectroscopy and C.H.N.S analysis were used to diagnostic the products. The molecular structure of (E)-N-(adamantan-1-yl)-1-(3-nitrophenyl)methanimine was confirmed by X-ray crystallography analysis.  

Structure of Halogenophosphorincopper(I) Complexes in Solid State and Solution: Study with X-ray Crystallography and CP/MAS-31P{1H}-NMR Spectroscopy

2002 ◽  
Vol 2 (1-3) ◽  
pp. 211-217 ◽  
Author(s):  
Michito Shiotsuka ◽  
Takahiro Tanamachi ◽  
Tsuyoshi Urakawa ◽  
Megumu Munakata ◽  
Yoshihisa Matsuda
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
X Ray ◽  
X Ray Crystallography ◽  
Solution Study
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