Nachweis von Halogen-nitrobenzolen

Légrádi, L.

doi:10.1007/bf01219310

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1966

2010

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Cited by 5 publications

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“…The dichloro compound does not react with methanol but reacts quantitatively with NaOCHs in 30 minutes at room temperature. The resulting acidified solution can be titrated with O.LV AgX03 to give a measure of trichloro and dichloro compounds combined (84).…”

Section: Miscellaneous Methodsmentioning

confidence: 99%

Volumetric and Gravimetric Analytical Methods for Organic Compounds

Smith¹,

Wagner²,

Patterson³

1966

Anal. Chem.

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Section: Miscellaneous Methodsmentioning

confidence: 99%

Volumetric and Gravimetric Analytical Methods for Organic Compounds

Smith¹,

Wagner²,

Patterson³

1966

Anal. Chem.

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Zincke Reaction

2010

Comprehensive Organic Name Reactions and Reagents

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The synthesis of an N ‐alkyl pyridinium salt involving the formation of an N ‐(2,4‐dinitrophenyl)pyridinium chloride from pyridine and 2,4‐dinitrochlorobenzene and subsequent treatment of the pyridinium chloride with a primary amine and 2,4‐dinitroaniline as a side product is generally referred to as the Zincke reaction or Zincke synthesis of pyridinium salt. Besides the effect of primary amine, the N ‐(2,4‐dinitrophenyl)pyridinium chloride also decomposes in the presence of a secondary amine to afford an N , N ‐disubstituted conjugated aldehyde and is known as Zincke aldehyde. Furthermore, dichloromethane as a solvent improves the opening of the pyridinium ring during the attack of amine for 3,4‐dialkylpyridinium salt. This reaction has been modified by using 2,4‐dinitrochlorobenzene and cyanogen bromide, which activates the pyridine nucleus. This reaction has been broadly applied for the detection of nicotine, nicotinic acid, nicotinamide, or trigonellin in urine.

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Nachweis von Pyridinderivaten

Légrádi¹

1967

Mikrochim Acta

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Nachweis von Halogen-nitrobenzolen

Cited by 5 publications

References 2 publications

Volumetric and Gravimetric Analytical Methods for Organic Compounds

Volumetric and Gravimetric Analytical Methods for Organic Compounds

Zincke Reaction

Nachweis von Pyridinderivaten

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