Journal ArticleDOI
Reaktive E = C(p—p)π-Systeme, XXXI Erste Vertreter aminosubstituierter 1,2,4-Diazaphosphole
TLDR
In this article, X-ray diffraction studies on 5a and 5b indicate a delicate charge balance in the bonding system of 1H-1,2,4,σ2-diazaphospholes under the influence of the exocyclic push/pull substituents iPr2N and CF3 or CO2Me, respectively.Abstract:
Reactive E = C(p—p)π Systems, XXXII[1]. — First Representatives of Amino-Substituted 1,2,4-Diazaphospholes
(Diisopropylamino)phosphaethyne iPr2N—C≡P reacts at 20° C in a [3 + 2] cycloaddition with (trifluoromethyl)diazomethane (2a) or methyl diazoacetate (2b) to yield a mixture of the corresponding regioisomers 1H-1,2,4-diazaphospholes (5a or 5b) and 1H-1,2,3-diazaphospholes (6a or 6b) in quantitative yields (isomer ratio: 5a/6a = 2:1; 5b/6b = 4:1). X-ray diffraction studies on 5a and 5b indicate a delicate charge balance in the bonding system of 1H-1,2,4,σ2-diazaphospholes under the influence of the exocyclic push/pull substituents iPr2N and CF3 or CO2Me, respectively.read more
Citations
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Journal ArticleDOI
2,2,2-Trifluorodiazoethane (CF3CHN2): A Long Journey since 1943.
TL;DR: The current review summarizes and comprehensively analyzes all manuscripts in a peer-reviewed literature on 2,2,2-trifluorodiazoethane since its discovery in 1943 until today (as of 19 June 2020).
Journal ArticleDOI
Supramolecular structure of 1H-pyrazoles in the solid state: a crystallographic and ab initio study
TL;DR: The proposed semi-quantitative model, which explains most hydrogen-bonded motifs as a combination of the effects of substituents at C3 and C5, has been examined as a function of the steric and polarizability effects of these substituent effects represented by molar refractivity.
Book ChapterDOI
4.3 – Heterophospholes
TL;DR: In this article, the authors discuss the 671-systems with one or more two-coordinate phosphorus atoms in the ring and the remaining 42 systems with two and more heteroatoms besides phosphorus, including aza-and thiadiphospholes, diazadiphophospholes and azaphosphaarsoles.
Journal ArticleDOI
The structural and theoretical study of 1H-3,5-di-phenyl-1,2,4-diazaphosphole in the solid state
TL;DR: The N-, P-containing five-membered heterocyclic compound 1H-3,5-di-phenyl-1,2,4-diazaphosphole (1) was prepared in good yield and has been structurally characterized as mentioned in this paper.
Journal ArticleDOI
Reaktive EC(p‐p)n‐Systeme, XXXVIII. Molekül‐ und Elektronenstruktur des 2‐(Diisopropylamino)‐1λ3‐phosphaethins iPr2NCP
Gerd Becker,Matthias Böhringer,Rolf Gleiter,Karl-Heinz Pfeifer,Joseph Grobe,Duc Le Van,Marianne Hegemann +6 more
TL;DR: In this article, the molecular structure of 2-(diisopropylamino)-1λ3-phosphaethyne iPr2NCP (3) has been investigated by X-ray diffraction using a single crystal grown from the melt at −50.2°C.
References
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Journal ArticleDOI
Phosphaalkine – Synthesen, Reaktionen, Koordinationsverhalten
Manfred Regitz,Paul Binger +1 more
TL;DR: In this paper, the authors show how PCR-Einheit in Heterocyclen, in Phosphaarene and deren Valenzisomere, in polycyclische Verbindungen, die Verwendung als neue Ligandensysteme in der Komplexchemie and schlieslich die Cyclooligomerisierung with Organometallreagentien belegen dies auf eindrucksvolle Weise.
Journal ArticleDOI
Phosphorverbindungen ungewöhnlicher Koordination, 191) 1,2,4-Diazaphosphole durch [3+2]-Cycloaddition von Diazoverbindungen an ein stabiles Phosphaalkin
TL;DR: In this paper, a reaction sequence of the phosphaalkins 1 with cyclischen α-Diazoketonen with cyclic α-diazo ketones was studied.
Journal ArticleDOI
Unusually Coordinated Phosphorus Compounds; 7. Adamant-1-ylmethylidynephosphine, A New, Stable Phosphaalkyne
Journal ArticleDOI
Ungewöhnlich koordinierte Phosphorverbindungen
TL;DR: The phosphaalkenes are derived from tris(trimethylsilyl)phosphine and acid chlorides, with acylphosphines considered as intermediates of the reaction as mentioned in this paper.
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