ChemInform Abstract: Synthesis of Phosphonium Salts, Phosphorus Ylides and Unsaturated Ketones of 3- and 5-Acetyl Derivatives of Acenaphthene.

1986 ◽  
Vol 17 (39) ◽  
Author(s):  
M. I. SHEVCHUK ◽  
V. G. MUKAILU ◽  
V. I. LABA ◽  
A. V. SVIRIDOVA
Keyword(s):  
Phosphonium Salts ◽  
Phosphorus Ylides ◽  
Unsaturated Ketones ◽  
Derivatives Of

ChemInform Abstract: New Synthesis and Cyclopropanation of α-Phenylselanyl α,β-Unsaturated Ketones with Non-Stabilized Phosphorus Ylides.

ChemInform ◽  
2009 ◽  
Vol 40 (10) ◽  
Author(s):  
Sebastien Redon ◽  
Stephane Leleu ◽  
Xavier Pannecoucke ◽  
Xavier Franck ◽  
Francis Outurquin
Keyword(s):  
Phosphorus Ylides ◽  
Unsaturated Ketones ◽  
New Synthesis

ChemInform Abstract: Interaction of Derivatives of 7-Amino-1,5-benzodiazepin-2-ones with α,β-Unsaturated Ketones.

ChemInform ◽  
2011 ◽  
Vol 42 (17) ◽  
pp. no-no
Author(s):  
R. Janciene ◽  
Z. Stumbreviciute ◽  
A. Vektariene ◽  
R. Sirutkaitis ◽  
D. Podeniene ◽  
...  
Keyword(s):  
Unsaturated Ketones ◽  
Derivatives Of

Funktionelle Trimethylphosphinderivate, VIII Phosphoniumsalze, Oxide und Sulfide von Tetraorganodiphosphinomethanen, R2PCH2P(CH3)2/ Functional Derivatives of Trimethylphosphine, VIII Phosphonium salts, Oxides and Sulfides of Tetraorganodiphosphinomethanes, R2PCH2P(CH3)2

1979 ◽  
Vol 34 (1) ◽  
pp. 31-43 ◽  
Keyword(s):  
Spectroscopic Data ◽  
Type Systems ◽  
Phosphonium Salts ◽  
Functional Derivatives ◽  
New Compounds ◽  
Derivatives Of ◽  
C Nmr

Abstract Tetramethyldiphosphinomethane (CH3)2PCH2(CH3)2 (1a) reacts with HCl/ether to form the mono-and bisquaternary salts [(CH3)2PCH2P(H)(CH3)2]Cl (2) and [(CH3)2(H)PCH2P(H)(CH3)2]Cl2 (3), respectively. The system 1a/HCl, incorporating 1 a/2/3, represents a useful tool for studying the appearance of XnAA′X′n-spin type systems. These compounds are also prototypes for a variety of other mono-or bis-phosphonium salts, which are formed in the reactions of the diphosphines (CH3)2PCH2PR2 (R = CH3, t-C4H9, C6H5) (1a-c) with (CH3)2CO + HCl, CH3I, t-C4H9Br, C6H5COCl, (CH3)2PCl and Br(CH2)nBr (n = 1, 2). Heterocycles are not obtained. The dioxide 14 and the disulfide 15 are also described. Some properties and spectroscopic data (IR, 1H, 31P and 13C NMR) of 26 new compounds are reported and briefly discussed.

Mercury(II) complexes of new bidentate phosphorus ylides: synthesis, spectra and crystal structures

2014 ◽  
Vol 68 (5) ◽  
Author(s):  
Seyyed Sabounchei ◽  
Mohammad Panahimehr ◽  
Hamid Khavasi ◽  
Fateme Bagherjeri ◽  
Collete Boscovic
Keyword(s):  
Single Crystal ◽  
Nmr Spectra ◽  
Mononuclear Complex ◽  
13C Nmr Spectra ◽  
Phosphonium Salts ◽  
X Ray Diffraction ◽  
Phosphorus Ylides ◽  
X Ray ◽  
Mononuclear Complexes ◽  
Tetrahedral Environment

AbstractThe reaction of dppm (1,1-bis(diphenylphosphino)methane) with 2-bromo-4-phenylacetophenone and benzyl bromoacetate in chloroform produces new phosphonium salts, [Ph2PCH2PPh2CH2C(O) C6H4Ph]Br (I) and [Ph2PCH2PPh2CH2COOCH2Ph]Br (II). By allowing the phosphonium salts to react with the appropriate base, the bidentate phosphorus ylides, Ph2PCH2PPh2=C(H)C(O)C6H4Ph (III) and Ph2PCH2PPh2=C(H)C(O)OCH2Ph (IV), were obtained. The reaction of these ligands with mercury(II) halides in dry methanol led to the formation of the mononuclear complexes {HgX2[(Ph2PCH2PPh2C(H)C(O)C6H4Ph)]} (X = Cl (V); X = Br (VI); X = I (VII)) and {HgX2[(Ph2PCH2PPh2C(H)COOCH2Ph)]} (X = Cl (VIII); X = Br (IX); X = I (X)). The FTIR and 1H, 31P and 13C NMR spectra were studied. The structure of compound III was unequivocally determined by the single-crystal X-ray diffraction technique. Single-crystal X-ray analysis of the {HgBr2[(Ph2PCH2PPh2C(H)C(O)C6H4Me)]} complex (XI) revealed the presence of a mononuclear complex containing the Hg atom in a distorted tetrahedral environment. In all complexes, the ylides referred to above were coordinated through the ylidic carbon and the phosphine atom.

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