Synthesis and characterization of two new chiral Kemp’s acid derivatives: structures fixed by a peculiar system of N–H···O, C–H···O and C–H···N hydrogen bonds

2016 ◽  
Vol 231 (9) ◽  
Author(s):  
Richard Pažout ◽  
Jaroslav Maixner ◽  
Jan Pecháček ◽  
Beáta Vilhanová ◽  
Petr Kačer
Keyword(s):  
Hydrogen Bonds ◽  
Asymmetric Reactions ◽  
Synthesis And Characterization ◽  
Catalytic Asymmetric ◽  
Derivatives Of ◽  
Oxazoline Derivatives ◽  
Catalytic Asymmetric Reactions

AbstractNew chiral imide-oxazoline derivatives of Kemp’s acid were synthesized with the aim to produce new ligands suitable for catalytic asymmetric reactions. Compound

scholarly journals Synthesis and characterization of 3-methyl-6-[(propynyloxy)methyl]-1,4-dioxane-2,5-dione

2017 ◽  
Vol 73 (7) ◽  
pp. 1044-1047
Author(s):  
Igor Elkin ◽  
Thierry Maris ◽  
Patrice Hildgen
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Axial Position ◽  
Synthesis And Characterization ◽  
Boat Conformation ◽  
Dione Derivative ◽  
Derivatives Of ◽  
Twist Boat

The number of known asymmetrically substituted hemilactides, important precursors for obtaining regular derivatives of polylactide polymers, is still limited and structural characterization of most of them is incomplete. In the title racemic 1,4-dioxane-2,5-dione derivative, C9H10O5, the hemilactide heterocycle exhibits a twist-boat conformation. The bulkier propynyloxymethyl group is in an axial position with agaucheconformation for the CH2–O–CH2–C segment. In the crystal, molecules are linked by pairs of C—H...O hydrogen bonds, forming inversion dimers. The dimers are linked by further C—H...O contacts, forming a three-dimensional structure.

scholarly journals Pyrazoleamides in Catalytic Asymmetric Reactions: Recent Advances

2021 ◽  
Author(s):  
Sara Meninno ◽  
Francesca Franco ◽  
Maurizio Benaglia ◽  
Alessandra Lattanzi
Keyword(s):  
Asymmetric Reactions ◽  
Recent Advances ◽  
Catalytic Asymmetric ◽  
Catalytic Asymmetric Reactions

The synthesis and characterization of new aminoadamantane derivatives of hexachloro-cyclo-triphosphazene

Polyhedron ◽  
2008 ◽  
Vol 27 (9-10) ◽  
pp. 2077-2082 ◽  
Author(s):  
Radka Kočí Voznicová ◽  
Jan Taraba ◽  
Jiří Příhoda ◽  
Milan Alberti
Keyword(s):  
Synthesis And Characterization ◽  
Derivatives Of

Synthesis and characterization of novel 2,5-diphenyl-1,3,4-oxadiazole derivatives of anthracene and its application as electron transporting blue emitters in OLEDs

2011 ◽  
Vol 161 (9-10) ◽  
pp. 869-880 ◽  
Author(s):  
M. Ananth Reddy ◽  
G. Mallesham ◽  
Anup Thomas ◽  
Kola Srinivas ◽  
V. Jayathirtha Rao ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Oxadiazole Derivatives ◽  
Blue Emitters ◽  
Derivatives Of
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