ChemInform Abstract: REACTIONS IN MOLECULAR INCLUSION COMPLEXES. 5. DIFFERENTIATION BETWEEN REACTION PATHWAYS IN THE PHOTOADDITION OF GUEST P-FLUOROACETOPHENONE TO HOST DEOXYCHOLIC ACID VIA X-RAY ANALYSIS OF A COMPLEX UNDERGOING A SINGLE-CRYSTAL-TO-SINGLE

1982 ◽  
Vol 13 (18) ◽  
Author(s):  
H. C. CHANG ◽  
R. POPOVITZ-BIRO ◽  
M. LAHAV ◽  
L. LEISEROWITZ
Keyword(s):  
Single Crystal ◽  
Inclusion Complexes ◽  
Deoxycholic Acid ◽  
Reaction Pathways ◽  
X Ray ◽  
Molecular Inclusion

Structure-reactivity correlation in inclusion complexes: deoxycholic acid di-tert-butyl thioketone

1984 ◽  
Vol 62 (10) ◽  
pp. 2025-2028 ◽  
Author(s):  
K. Padmanabhan ◽  
K. Venkatesan ◽  
V. Ramamurthy
Keyword(s):  
Inclusion Complexes ◽  
Structure Analysis ◽  
Ultraviolet Irradiation ◽  
Deoxycholic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Tert Butyl ◽  
Molecular Inclusion

Ultraviolet irradiation of crystalline molecular inclusion complexes of deoxycholic acid with di-tert-butyl thioketone results in no reaction. The structure of the above complex has been determined via X-ray diffraction. The absence of expected photoreactions, namely, photoreduction and photooxidation, is rationalized on the basis of the X-ray structure analysis of the complex.

scholarly journals Synthesis of mesomeric betaine compounds with imidazolium-enolate structure

2012 ◽  
Vol 8 ◽  
pp. 390-397 ◽  
Author(s):  
Nina Gonsior ◽  
Fabian Mohr ◽  
Helmut Ritter
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Inclusion Complexes ◽  
Polymer Networks ◽  
Reaction Conditions ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Single Crystal Analysis

The synthesis of a heterocyclic mesomeric betaine by quaternization reaction of 1-butylimidazole and tetrabromo-1,4-benzoquinone is presented. The structure was verified by means of X-ray single-crystal analysis, NMR and IR spectroscopy. Inclusion complexes of the heterocyclic mesomeric betaine with randomly methylated (1.8) β-cyclodextrin were investigated by UV–vis spectroscopy. Furthermore, the reaction conditions were applied to poly(vinylimidazole) and 1,4-bis(1H-imidazol-1-yl)butane to obtain functionalized polymer networks and condensate polymers, respectively.

scholarly journals A convenient four-component one-pot strategy toward the synthesis of pyrazolo[3,4-d]pyrimidines

2015 ◽  
Vol 11 ◽  
pp. 2125-2131 ◽  
Author(s):  
Mingxing Liu ◽  
Jiarong Li ◽  
Hongxin Chai ◽  
Kai Zhang ◽  
Deli Yang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Reaction Pathways ◽  
X Ray Diffraction ◽  
Pyrimidine Derivatives ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis

An efficient one-pot synthesis of pyrazolo[3,4-d]pyrimidine derivatives by the four-component condensation of hydrazines, methylenemalononitriles, aldehydes and alcohols has been developed via two different reaction pathways. The structures of target products were characterized by IR spectroscopy, NMR (1H and 13C) spectroscopy and HRMS (ESI) spectrometry. The crystal structure of 4-ethoxy-6-(2-nitrophenyl)-1-phenyl-1H-pyrazolo[3,4-d]pyrimidine was determined by single crystal X-ray diffraction.

Can Thermal Vibration Amplitudes be Used as Indicators of Reaction Pathways? An Examination of [Nb, TaF7]2- Structures

1992 ◽  
Vol 45 (9) ◽  
pp. 1547 ◽  
Author(s):  
MC Favas ◽  
JM Harrowfield ◽  
DL Kepert ◽  
BW Skelton ◽  
LM Vitolo ◽  
...  
Keyword(s):  
Single Crystal ◽  
Room Temperature ◽  
Electron Pair ◽  
Crystal Packing ◽  
Thermal Vibration ◽  
Reaction Pathways ◽  
X Ray

Thermal vibrational amplitudes, determined from a single-crystal X-ray study of K2TaF7 at room temperature, show similar characteristics to the neutron values for isomorphous K2NbF7, exhibiting considerable variations in anisotropies for the different fluorine atoms. These variations can be rationalized by using a combination of electron pair repulsion theory and crystal packing considerations.

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