Step-by-step synthesis of multifunctionalized linear oligophosphazenes: X-ray crystal structures of compounds issued from the first steps

Autor:	Anne-Marie Caminade, Jean-Pierre Majoral, Grégory Spataro, Germinal Magro, Bruno Donnadieu
Rok vydání:	2007
Předmět:	Chemistry Stereochemistry Crystal structure Alkylation Medicinal chemistry Inorganic Chemistry chemistry.chemical_compound Nucleophile Materials Chemistry Staudinger reaction Azide Physical and Theoretical Chemistry Triphenylphosphine Phosphine Phosphazene
Zdroj:	Polyhedron. 26:3885-3892
ISSN:	0277-5387
Popis:	Staudinger reactions between triphenylphosphine and variously functionalized thiophosphorylazides afford compounds possessing one P N P S linkage. The X-ray diffraction structure of one functionalized azide and of a compound possessing a P N P S linkage are given. Alkylation of sulfur with methyltriflate, followed by desulfurization using a nucleophilic phosphine (P(NMe 2 ) 3 ) lead to a phosphazene connected to a tricoordinated phosphorus atom, able to undergo a Staudinger reaction with another thiophosphorylazide, to afford a P N P N P S linkage. Alkylation on sulfur allows to demonstrate by 31 P NMR a delocalization of the positive charge along the inorganic oligophosphazene linkage.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8ce863463a8754fa450b25a72a9aea4e https://doi.org/10.1016/j.poly.2007.04.011 Zobrazit plný text záznamu Full Text from ScienceDirect