Using a routine procedure, a number of derivatives of the benzo[4,5]isothiazolo[2,3-a]pyrazine-6,6-dioxide ring system have been synthesized from readily available starting materials. A series of chalcones were synthesized, which were subsequently reacted with chlorosulfonic acid to generate chalcone sulfonyl chlorides. The chalcone sulfonyl chlorides were then treated with bromine to generate ...

In this work it was carried out the bioremediation of water containing chlorides with native microalgae (MCA) provided by the Centre for study and research in biotechnology (CIBIOT) at Universidad Pontificia Bolivariana. Microalgae presented an adaptation to the water and so the conditions evaluated reaching a production of CO2 in mg L-1 of 53.0, 26.6, 56.0, 16.0 and 30.0 and chloride removal e...

This paper describes a project dealing with achieving an optimum mix of water from different underground wells, each having different amounts of nitrates and chlorides. The amounts of chlorides and nitrates in each of the wells may be higher or lower than the World Health Organization (WHO) standards. Therefore, the optimum mix would be the one that meets WHO standard which is 250 mg/l for chlo...

Visible light photoredox/nickel dual catalysis has been employed in the cross-coupling of acyl chlorides with potassium alkyltrifluoroborates. This protocol, based on single-electron-mediated alkyl transfer, circumvents the restriction of using reactive alkylmetallic nucleophiles in transition-metal-catalyzed acylation and achieves a mild and efficient method for the synthesis of unsymmetrical ...

The reaction of acid hydrazides (1a-c) with 2-chloro-1-(4-chlorophenyl)ethanone (2a) or 2-bromo-1-(4-bromophenyl)ethanone (2b) afforded bis-hydrazones 6a-d, while the reaction of la-c with 2-oxo-N-arylpropanehydrazonoyl chlorides (3a,b) furnished N-(aryl)propanehydrazonoyl chlorides 8a-c. The reaction of the latter chlorides with sodium benzenesulfinate furnished sulfones 11a-c. On the other ha...

1his thesis is the flfst report of reactions of atomic calbon with acid chlorides. Carbon is known to react with phosgene to afford dichlorocarbene. We report a similar reaction with carbon and acid ch~lorides, generating alkylchlorocarbenes. We examine both the nature of the carbene products generated through deoxygenation and the general reacliviry ofcarbon with the acid chlorides. We report ...

This paper presents evidence that zinc filtrates (particularly the Hagedorn-Jensen (1923) filtrates) of urine (after treatment with hydrogen peroxide), whole blood, plasma, or serum are suitable for the accurate determination of chlorides with dichlorofluorescein as an indicator. The precision of this method for urine chlorides has been shown by comparison with established procedures such as th...

• The importance of potassium and various chlorides in the pathogenesis of several experimental cardiac necroses was first suggested by the observation that all the potassium salts (phosphates, sulfates, chloride, etc.) and all the chlorides (of magnesium, potassium, ammonium, etc.) tested were effective in preventing the myocardial lesions, while no other salts had such an effect. In a previou...

First-row metal complexes often undergo undesirable one-electron redox processes during two-electron steps of catalytic cycles. We report the amination of aryl chlorides and bromides with primary aliphatic amines catalyzed by a well-defined, single-component nickel precursor (BINAP)Ni(η(2)-NC-Ph) (BINAP = 2,2'-bis(biphenylphosphino)-1,1'-binaphthalene) that minimizes the formation of Ni(I) spec...