The first direct access to unprotected amino-pyrroloindoline via aminocyclization of tryptamine and tryptophan has been described. A variety of structurally diverse amino-pyrroloindolines are furnished by the use of O-(2,4-dinitrophenyl)hydroxylamine (DPH) as the nitrogen source in the presence of catalytic Rh2(esp)2.

The title complex, [Cd(Paba)(2)]·2H(2)O or [Cd(C(12)H(9)N(2)O(3)S)(2)]·2H(2)O, was synthesized by the reaction of the potassium salt of 2-(2-pyridylmethyl-eneamino)benzene-sulfonic acid (PabaK) with CdCl(2)·2.5H(2)O in methanol. The Cd(II) atom lies on a crystallographic twofold axis and is coordinated by four N atoms and two O atoms from two deprotonated tridentate 2-(2-pyridylmethyl-eneamino)...

The scanning electrochemical microscope ~SECM! was used to study the electrochemical reduction of nitric acid to hydroxylamine at modified glassy carbon ~GC! electrodes. The GC surface was modified by holding it at a negative potential in solutions of p-aminophenol, or p-phenylenediamine in 1.0 M nitric acid. The generated products were detected in generation/collection experiments with an SECM...

In peptide synthesis, hydrazides are important intermediates for the azide coupling method. A hydrazide is converted to the corresponding azide in the presence of an acid and a nitrite. When acetic acid (or formic acid) is used as the acid, partial acetylation (or formylation) of the hydrazide occurs as a side reaction. Formylation of the hydrazide is much faster than acetylation. Removal of th...

Homogenous bis-sulfonic acid ionic liquids (1 mol equiv.) in DMSO (10 mol equiv.) at 100 °C efficiently mediated the conversion of D-fructose into 5-hydroxymethyl-2-furfural in 75% isolated yield, which was roughly a 10% increment compared to the case of the mono-sulfonic acid ionic liquids.

The Cover Feature represents acetohydroxamic acid degradation in used nuclear fuel reprocessing cycles, where it is broken down by hydrolysis and radiation aqueous nitric to form acetic acid, hydroxylamine, nitrous oxide, hydrogen gas. Designed Rett Longmore. More information can be found the Research Article Jacy K. Conrad, Gregory P. Horne co-workers.

Derivatives of methylenediphosphonic acid possess wide spectra of biological activities and are used in enzymology as research tools as well as in practical medicine. Carbonyl diphosphonic acid is a promising starting building block for synthesis of functionally substituted methylenediphosphonates. Investigation of the interaction of carbonyl diphosphonic acid with hydroxylamine clearly demonst...