“…Chromone analogues are widely known for their various biological activities and pharmacological properties. − On the other side, phosphoroamides and phosphorohydrazides were found to exhibit anticancer activity − by alkylating nucleophilic centers of nucleobases and amino acids. Modification of a phosphorohydrazide molecule containing a heterocyclic system gives the possibility of designing and synthesizing novel compounds of interesting properties.…”
The crystal and molecular structures of two new phosphorochromones determined by single-crystal X-ray
diffraction are presented. The existence of two tautomers stabilized by intramolecular N−H···O and O−H···N
hydrogen bonds and environmental effects in crystals is observed as evidence of the proton transfer reaction.
The proton transfer process within simple enaminones being analogues of the compounds studied by X-ray
diffraction methods is investigated usingMP2/6-311++G** and MP4/6-311++G** levels of theory. The
Bader theory is also applied in the analysis of the hydrogen bonding within investigated systems. The results
indicate that the systems with N−H···O intramolecular hydrogen bonds are more stable than those containing
O−H···N bonds.
“…Chromone analogues are widely known for their various biological activities and pharmacological properties. − On the other side, phosphoroamides and phosphorohydrazides were found to exhibit anticancer activity − by alkylating nucleophilic centers of nucleobases and amino acids. Modification of a phosphorohydrazide molecule containing a heterocyclic system gives the possibility of designing and synthesizing novel compounds of interesting properties.…”
The crystal and molecular structures of two new phosphorochromones determined by single-crystal X-ray
diffraction are presented. The existence of two tautomers stabilized by intramolecular N−H···O and O−H···N
hydrogen bonds and environmental effects in crystals is observed as evidence of the proton transfer reaction.
The proton transfer process within simple enaminones being analogues of the compounds studied by X-ray
diffraction methods is investigated usingMP2/6-311++G** and MP4/6-311++G** levels of theory. The
Bader theory is also applied in the analysis of the hydrogen bonding within investigated systems. The results
indicate that the systems with N−H···O intramolecular hydrogen bonds are more stable than those containing
O−H···N bonds.
“…Methylsubstituierte Dihydrazido Verbindungen des Phosphors sind seit längerer Zeit bekannt [1][2][3][4][5][6][7][8][9][10][11][12]. Derartige Substanzen gewinnen neben anderen Phosphor-Hydrazin-Verbindungen zunehmend an Bedeutung; einige zeigten bakterizide und fungizide Eigenschaften oder wurden auf anticarcinogene Wirkung untersucht [1,7]**.…”
Section: Einführungunclassified
“…Derartige Substanzen gewinnen neben anderen Phosphor-Hydrazin-Verbindungen zunehmend an Bedeutung; einige zeigten bakterizide und fungizide Eigenschaften oder wurden auf anticarcinogene Wirkung untersucht [1,7]**. Einige methylsubstituierte Phosphordihydrazide können verwendet werden als Stabilisatoren für Polyurethane [8], hauptsächlich wurden sie aber dargestellt als Ausgangssubstanzen für die Synthese von Heterocyclen, insbesondere anorganischen Heterocyclen [9][10][11][12], Speziell aus der Reihe der von der Thiophosphorsäure abzuleitenden methylsubstituierten Dihydrazide [1,2,8,[9][10][11] [10].…”
Section: Einführungunclassified
“…Es konnten nur geringe Mengen an 3 a, verunreinigt mit Zersetzungsprodukten, zurückgewonnen werden; das andere Isomere zersetzte sich hierbei völlig. Zu ähnlichen Ergebnissen hatte auch die säulenchromatographische Trennung von 1-Methylhydrazido-und 2-Methylhydrazido-phosphorsäure-diphenylester geführt [7].…”
Abstract C6H5OP(X)Cl2 (X=O, S) reacts with 1,2-dimethylhydrazine, 1,1-dimethylhydrazine or methylhydrazine, resp., to give the new dihydrazido derivatives la, 2a, 2b, or 3a and 3a-1, resp. Their 1H NMR and 31P NMR data are given.
“…Methylhydrazine was used later for the synthesis of phosphorhydrazides, but problems were experienced, such as the difficulty to isolate the product of reaction between Ph 2 PCl and HNMeNH 2 , or the presence of two regioisomers in the reaction of (PhO) 2 P(O) Cl with HNMeNH 2 , corresponding to the reaction of either the HNMe or the NH 2 side of methylhydrazine . The first successful use of methylhydrazine in phosphorus chemistry was proposed by one of us, with the synthesis of four phosphodihydrazides of type RP(X)(NMeNH 2 ) 2 , with R = Ph, NMe 2 for X = O, and R = PhO, NMe 2 for X = S .…”
The role of phosphorhydrazide derivatives, in particular of type RP(X)(NMeNH 2 ) 2 for the synthesis of macrocycles and of type Cl 2 P(X)NMeNH 2 (X = O, S in both cases) for the synthesis of dendrimers, will be shown in this review. In both cases, condensation reactions with different types of aldehydes [a] Scheme 1. The first macrocycles obtained by condensation of two equiv. of phosphodihydrazides with two equiv. of dialdehydes.1460 Scheme 5. First example of a spherand based on phosphorhydrazides.Scheme 6. Phosphotrihydrazides for the synthesis of cryptands and macrocyclic polymers. 1461 Scheme 8. Two ways for the functionalization of N 3 P 3 Cl 6 with two functions in a 1:5 or 5:1 ratio. In the bottom, two cyclotriphosphazenes associated by fluorescent diphenols.Thanks are due to the CNRS, to the ANR 2017 SLOW2 for financial support, and to the GDR Phosphore.
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