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Potentiometric Studies on the Protonation Constants and Solvation of Some a-Amino Acid Benzyl- and t-Butyl- Esters in Ethanol-Water Mixtures
Potentiometry protonation constants solvent effect amino acid esters
2010/4/20
To gain more information about the effect of solvent on a -amino acid benzyl- and t-butyl- esters, the stoichiometric protonation constants of 10 esters (glycine benzyl ester, L-alanine benzyl ester, ...
Preparation of Optically Active Amino Acid Derivatives of Some Methylated 5-Amino-Azaheterocycles
Preparation Optically Active Amino Acid Derivatives Methylated 5-Amino-Azaheterocycles
2010/6/28
The present paper describes the reduction of 1-methyl-5-nitro-benzimidazoles ({\bf 1A, 2A}) and 1,3-dimethyl-2H-5-nitro-benzimidazol-2-one ({\bf 3}) to 5-aminobenzimidazoles ({\bf 4A, 5A}) and 1,3-dim...