Results 11 to 20 of about 835 (215)

Dialkyl dicyanofumarates and dicyanomaleates as versatile building blocks for synthetic organic chemistry and mechanistic studies [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2017
The scope of applications of dialkyl dicyanofumarates and maleates as highly functionalized electron-deficient dipolarophiles, dienophiles and Michael acceptors is summarized.
Grzegorz Mlostoń, Heinz Heimgartner
doaj   +5 more sources

Spectrophotometric Determination of Various Drugs Using Chloranilic Acid as Chromogenic Reagent - II [PDF]

open access: yesE-Journal of Chemistry, 2010
Simple, accurate and reproducible visible spectrophotometric method for the assay of drugs such as pyrilamine and fluvoxamine as maleates was established based on the formation of charge-transfer complex and redox reaction between the corresponding drug ...
V. Annapurna   +3 more
doaj   +2 more sources

Maleic Acid as a Co-Former for Pharmaceutically Active GABA Derivatives: Mechanochemistry or Solvent Crystallization? [PDF]

open access: yesMaterials (Basel), 2023
In this study, we compare the mechanochemical and classical solvent crystallization methods for forming maleates of GABA and its pharmaceutically active derivatives: Pregabalin, Gabapentin, Phenibut, and Baclofen. Common characterization techniques, like
Komisarek D, Taskiran E, Vasylyeva V.
europepmc   +2 more sources

Structural Variety of Alkali Hydrogen Maleates at High Pressure [PDF]

open access: yes, 2020
Studies regarding the effect of pressure on the structure of pharmaceutical excipients, such as hydrogen maleates, can provide useful information about their stability in the formulation and overall chemical interactions with active ingredients. Hydrogen
Piero Macchi   +2 more
core   +2 more sources

2-Carboxypyridinium maleate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
In the title mol-ecular salt, C(6)H(6)NO(2) (+) (.)C(4)H(3)O(4) (-), the 2-carb-oxy-pyridinium cation is essentially planar with a maximum deviation of 0.003 (3) Å. In the crystal, adjacent cations and anions are linked by an extensive system of weak N-H⋯O, O-H⋯O and C-H⋯O inter-actions, forming a layer parallel to the ab plane.
Pandi, P.   +4 more
openaire   +2 more sources

Bioassay Directed Isolation, Biological Evaluation and in Silico Studies of New Isolates from Pteris cretica L.

open access: yesAntioxidants, 2019
Members of genus Pteris have their established role in the traditional herbal medicine system. In the pursuit to identify its biologically active constituents, the specie Pteris cretica L. (P. cretica) was selected for the bioassay-guided isolation.
Farooq Saleem   +10 more
doaj   +1 more source

Novel green route towards polyesters-based resin by photopolymerization of star polymers

open access: yeseXPRESS Polymer Letters, 2019
Bio-based star-shaped poly(ε-caprolactone)s (S-PCL) derived from sugar-based D-sorbitol as an initiator were obtained via solvent-free enzymatic ring-opening polymerization (eROP).
P. Baheti   +5 more
doaj   +1 more source

Insights into the Interaction between Amylose-Rich Corn Starch and Maleic Anhydride in Imidazolium Chloride-Based Ionic Liquids

open access: yes, 2023
Starch maleates with a high degree of maleic anhydride (MA) substitutions (DS) are in-demand for producing advanced composites. High-DS maleates are synthesized in imidazolium chloride-based ionic liquids because they could sustain starch-MA ...
Sen Wang   +5 more
core   +1 more source

Three-Component Coupling Reactions of Aryne, DMSO, and Activated Alkyne: Stereoselective Synthesis of 2‑[(o‑Methylthio)aryloxy]-Substituted Dialkyl Maleates

open access: yes, 2019
A transition-metal-free coupling reaction of aryne, DMSO, and activated alkyne for the synthesis of 2-[(o-methylthio)­aryloxy]-substituted dialkyl maleates is reported.
Pranjal Gogoi (1608181)   +9 more
core   +2 more sources

Polymerization of Unsaturated Dibasic Acid Derivatives (III) Synthe~es and Polymerization of Alkyl Viny Maleates and Fumarates [PDF]

open access: yes, 1964
Ethyl-,n-propyl-, i-propyl and n-butyl vinyl maleates and fumarates were synthesised by the vinyl interchange reaction of vinyl acetate with mono alkyl maleates,a nd the physical properties of these compounds were determined.
高瀬, 巌   +3 more
core   +1 more source

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