Darstellung und Eigenschaften von und Reaktionen mit metallhaltigen Heterocyclen, XIII. Darstellung und Kristallstrukturen neuartiger Mangana- und Rhenaphosphacycloalkane durch Substitution und reduktive Cycloeliminierung mit ω-Chlor-1-(diphenylphosphino)alkanen

作者: Ekkekard Lindner , Guido Funk , Sigurd Hoehne

DOI: 10.1002/CBER.19811140713

关键词: Sodium amalgamMedicinal chemistryCrystal structureChemistryInorganic chemistry

摘要: Drei- bis sechsgliedrige Mangana- und Rhenaphosphacycloalkane des Typs erhalt man durch reduktive Cycloeliminierung der Phosphankomplexe (OC)4BrMPPh2-[CH2]n-Cl (3a–d, 3b′–d′) mit Natriumamalgam [Gl. (4)]. 3a–d sind Austausch von CO gegen die Phosphane PPh2-[CH2]n-Cl (2a–d) in BrMn(CO)5(1) zuganglich, 3b′–d′ Umsetzung [BrRe(CO)4]2(1′) 2b–d (1)]. Das bisher unbekannte Phosphan PPh2-[CH2]4-Cl (2d) bildet sich bei Einwirkung NaPPh2 auf Cl-[CH2]4-Cl THF last O2 leicht das Oxid Cl-[CH2]4-P(O)Ph2(4d) uberfuhren [Gl.(2), (3)]. Fur Synthese 5c 5c′ eignet auch Reaktion PPh2-[CH2]3-MgCl 1 bzw. 1′ 5b ist thermisch labil reagiert PPh3 unter CO-Insertion Mn-C-σ-Bindung zum cyclischen Acylderivat . 5b′ kristallisieren monoklinen Raumgruppe P21/n C2/c Z = 4 8. Preparation and Properties of, Reactions with, Metal-Containing Heterocycles, XIII. Preparation Crystal Structures of Novel Rhenaphosphacycloalkanes by Substitution Reductive Cycloelimination with ω-Chloro-1-(diphenylphosphino)alkanes The three- to six-membered mangana- rhenaphosphacycloalkanes the type are obtained reductive cycloelimination phosphane complexes sodium amalgam [eq. accessible substituting phosphanes BrMn(CO)5(1)3b′–d′ reaction The hitherto unknown is formed action on can easily be transformed into oxide (2), For synthesis 11′, respectively, also suitable thermally labile reacts under insertion Mn-C-σ bond give cyclic acyl derivative crystallize monoclinic space groupe 8, respectively.

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