(401)Preparation of Aminoacids from Acrylic Esters. II.
نویسندگان
چکیده
منابع مشابه
Molecular interaction studies of acrylic esters with 1-alcohols.
Hydrogen bonding between 1-alcohols and acrylic esters in n-heptane has been studied by FTIR spectroscopic method. The formation constant of the 1:1 complexes has been calculated using Nash method. The values of formation constant and free energy change vary with alcohol and ester chain length, which suggests that the strengths of the intermolecular O-H...O=C bonds are shown to be dependent on ...
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Cushny in 1917 first remarked on the extensive amino acid reabsorption which occurs in the nephron. Although many workers since then have studied the nature and localization of the reabsorptive mechanism, progress has been slow because of the technical difficulties of micropuncture work. The bulk of filtered amino nitrogen is reabsorbed in the proximal tubule although the possibility of there b...
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Eudragit RL (ERL) and Eudragit RS (ERS) are biocompatible cationic copolymers, pH-independent and insoluble in aqueous environment. In this study drug delivery system consisting of a capsule filled with floating pellets with verapamil hydrochloride (VH) is proposed. The release of VH in the stomach results in better solubility in an acid gastric environment in vivo and may result in greater amo...
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The aza-Michael addition of 1,2,3,6-tetrahydrophthalimide with symmetrical fumaric esters has been performed efficiently in a solvent-free system at 100 °C and using 1,4-diazabicyclo[2.2.2]octane (DABCO) as a base in the presence of tetrabutylammonium bromide (TBAB). The products were obtained in good to high yields within 2.5-7.0 h. This reaction worked well on linear alkyl fumarates and was n...
متن کاملOn the Phosphotungstates of Certain Aminoacids
In a communication to the Chemical Society ~ one of us reported on the property of aminoacids to form insoluble phosphotungstates. In a later publication 2 the writers showed the degree of precipitability of aminoacids by means of phosphottmgstic acid, and stated that a separation of aminoacids may be accomplished by means of this reagent. The at tempt was made to apply the method to the study ...
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ژورنال
عنوان ژورنال: The Journal of the Society of Chemical Industry, Japan
سال: 1953
ISSN: 0023-2734,2185-0860
DOI: 10.1246/nikkashi1898.56.867