60011-08-7Relevant academic research and scientific papers
New and efficient approach to the synthesis of pentacoordinate spirobicyclic phosphoranes
Fu, Hua,Tu, Guang-Zhong,Li, Zhao-Long,Zhao, Yu-Fen,Zhang, Ri-Qing
, p. 2021 - 2022 (1997)
Pentacoordinate spirobicyclic 2-phenoxy-1,3-phenylenedioxo-1,3,2-imino(alkyl)acetoxyphosphoranes are synthesized through a new and efficient method whereby phosphorus pentachloride is displaced stepwise by catechol, an N,O-bis(trimethylsilyl)amino acid and phenol (pathway A) or catechol, phenol and an N,O-bis-(trimethylsilyl)amino acid (pathway B); this method has advantages of high yields, rapid reaction times and easy operation, which might provide a new route for the synthesis of other pentacoordinate phosphoranes.
Synthesis of 2-phenoxy-2,75-spiro[1,3,2-benzodioxaphosphole-2,2'- 1,3,2-oxazophospholan]-5'-ones
Fu, Hua,Tu, Guang-Zhong,Li, Zhao-Long,Zhao, Yu-Fen
, p. 855 - 858 (1998)
Phosphorus(V) chloride was sequentially displaced by catechol, N,O- bis(trimethylsilyl)amino acids and phenol (Method A) or catechol, phenol and N,O-bis(trimethylsilyl)amino acids (Method B) leading to a high yield synthesis of 2-phenoxy-2,75 spiro[1,3,2-benzodioxaphosphole-2,2'-1,3,2- oxazophospholan]-5'ones under mild conditions. The products were characterized by 1H, 13C, 1H-1H COSY, 1H-13C COSY and field desorption mass spectrometry.
UNTERSCHIEDLICHES VERHALTEN VON AROMATISCHEN PHOSPHITEN GEGENUEBER ACYLSULFENYLCHLORIDEN
Gloede, J.,Lutze, G.
, p. 265 - 270 (2007/10/02)
The acylsulfenyl chlorides 1 or 2 react with acyclic and cyclic aromatic phosphites.The acyclic derivative 3 gives the corresponding thiophosphate 4 and the cyclic derivatives 5 give the corresponding phosphates 6.The different behaviour is discussed. Key words: Acylsulfenyl chlorides; aromatic phosphites; oxidation of P(III) compounds.
LIGAND EXCHANGE BY HALOGENATION OF PIII COMPOUNDS
Gloede, Joerg
, p. 155 - 158 (2007/10/02)
The chlorination of several acyclic and cyclic PIII compounds at 0 deg C is discussed.Often a ligand exchange reaction is observed.
DERIVATE DES PHOSPHORSAEURE-o-PHENYLENESTERS. 20. Halogenierung von aromatischen o-Phenylenphosphiten. Ein Gleichgewicht zwischen Phosphonium- und Phosphoranstruktur
Gloede, Joerg,Gross, Hans,Michalski, Jan,Pakulski, Marek,Skowronska, Aleksandra
, p. 157 - 162 (2007/10/02)
The halogenation of phenyl- and o-methoxyphenyl-o-phenylene phosphites (1b,1c) gives at low temperature pentacoordinated dihalogenophosphoranes 4a, 4b, 5a, 5b.They are stable at room temperature with the exception of 5b.Even at -100 deg C 5b slowly gives a bromospirophosphorane 3b by breaking the ether linkage.The primary formed phosphorane is in an equilibrium with the phosphoniumsalt; both phosphorus compounds are proved with 31P n.m.r. spectroscopy.
