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1

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Ein Weg zu neuartigen funktionalisierten Bis(imino)phosphoranen XP(= NAryl)=NAlkyl (1990)

Niecke, Edgar ; von der Gönna, Volker ; Nieger, Martin

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 2329-2333

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ISSN: 0009-2940

Keywords: 1H-Tetraphospholes, 4,5-dihydro- ; Bis(imino)phosphoranes ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: A Route to Novel Functionalized Bis(imino)phosphoranes XP(=NAryl)=NAlkylChloro(arylimino)phosphane (1) reacts with alkyl azides RN3 (R = tBu, Et3C, 1-Ad) to form 4,5-dihydro-1H-tetrazaphos-pholes 2a-c. The thermal decomposition of these compounds results in the formation of the diazadiphosphetidines 4a-c via the chlorobis(imino)phosphorane intermediates 3a-c, which were detected by NMR spectroscopy. By treating 2a with the lithium salts Li(nBu, C5Me5, NHAryl, OAryl, tBuS) the 4,5-dihydro-1H-tetrazaphosphole intermediates 5a-d are obtained, which by elimination of nitrogen form the bis(imino)phosphoranes 6a-e. The X-ray structure determination of the phosphane derivative tBu2P—P(=NCEt3)= NAryl (7), obtained by the same procedure, is discussed.

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19901231216

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2

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1,3-Diaza-2λ2-phosphonia-4λ4-gallatacyclobutane (1994)

Oberdörfer, Richard ; Nieger, Martin ; Niecke, Edgar

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 2397-2401

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ISSN: 0009-2940

Keywords: [Amino(imino)phosphane]gallium trichloride adduct ; 1,3-Diaza-2λ2-phosphonia-4λ4-gallatacyclobutanes ; Nickel tricarbonyl complexes ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: 1,3-Diaza-2λ2-phosphonia-4λ4-gallatacyclobutanesReaction of amino(imino)phosphanes 1a-c with gallium trichloride results in the formation of 1,3-diaza-2λ2-phosphonia-4λ4-gallatacyclobutanes 3a, b with elimination of chlorotrimethylsilane (1a) or tert-butyl chloride (1b, c). The intermediately formed amino(imino)phosphane/Lewis acid adducts R(Me3Si)NPN(GaCl3)R′ (2, R,R′ = tBu, Me3Si) can be isolated in the case of compound 2a (R = R′ = SiMe3). A diazaphosphasilacyclobutane - gallium trichloride adduct 4 is formed in a side reaction by isomerization of 2a. Reaction of compound 3b with Ni(CO)4 gives the corresponding transition metal complex 5. The NMR data and X-ray structures of compounds 2a, 4, and 5 are reported.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19941271210

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Carbenoid or Lithium Complex of a Carbanion? Synthesis and Structure of (Me3Si)2C=P(aryl)=C(Cl)Li(thf)3 and LiCl Elimination To Give the PhosphireneThis work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie.Dedicated to Professor Manfred Regitz on the occasion of his 60th birthday (1995)

Niecke, Edgar ; Becker, Petra ; Nieger, Martin ; [et al.]

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 34 (1995), S. 1849-1852

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ISSN: 0570-0833

Keywords: carbenoids ; lithium compounds ; phosphorus compounds ; structure elucidation ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/anie.199518491

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4

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A Simple Route to the 1-Aza-3-Phosphaallyl System: Structure of a Dimeric Lithium Complex and Protonation to Give the First NH2-Substituted PhosphaalkeneThis work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie. K. P. thanks the Fonds der Chemischen Industrie for a doctoral grant.Dedicated to Professor Herbert Roesky on the occasion of his 60th birthday (1995)

Paasch, Karin ; Nieger, Martin ; Niecke, Edgar

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 34 (1995), S. 2369-2371

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ISSN: 0570-0833

Keywords: heteroallyl anions ; lithium compounds ; phosphaalkenes ; phosphorus compounds ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/anie.199523691

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5

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Synthesis, Structure, and Reactivity of a 2,3,4-TriphosphapentadienideThis work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie.Dedicated to Professor Ralf Appel on the occasion of this 75th birthday (1996)

Thelen, Vera ; Schmidt, Dietmar ; Nieger, Martin ; [et al.]

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 35 (1996), S. 313-315

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ISSN: 0570-0833

Keywords: heterocycles ; pentadienides ; phosphorus compounds ; triphosphapentadienides ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/anie.199603131

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6

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A P2C2 Four-Membered Ring with Unusual Bonding - Synthesis, Structure, and Ring Opening of a 1,3-Diphosphacyclobutane-2,4-diylThis work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie.Dedicated to Professor Peter Paetzold on the occasion of his 60th birthday (1995)

Niecke, Edgar ; Fuchs, Andre' ; Baumeister, Fred ; [et al.]

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 34 (1995), S. 555-557

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ISSN: 0570-0833

Keywords: ab initio calculations ; cyclizations ; cyclobutadienes ; electronic structure ; phosphorus compounds ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/anie.199505551

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7

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Synthesis, Structure, and Reactivity of an Imido- and an Oxo(imido)phosphorane R—P(=X)=NR (X=NH, O; R = tBu3C6H2This work was supported by the Deutsche Forschungsgemeinschaft (SFB 334) and the Fonds der Chemischen Industrie.Dedicated to Professor Alfred Schmidpeter on the occasion of his 65th birthday (1995)

Larbig, Martin ; Nieger, Martin ; von der Gönna, Volker ; [et al.]

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 34 (1995), S. 460-462

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ISSN: 0570-0833

Keywords: nitrogen compounds ; phosphoranes ; phosphorus compounds ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/anie.199504601

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