Catalysis phenomena and intermediates in the reaction of phosphorus trichloride with aldehydes
作者:Mukattis B. Gazizov、Rafail A. Khairullin、Roza F. Kadirova、Edward S. Lewis、Alan M. Kook
DOI:10.1039/c39900001133
日期:——
Both hydrogen chloride and tertiary amines have been found to catalyse the reaction of PCL3 with aldehydes; two types of intermediate not previously observed have been synthesized.
The invention relates to a process for preparing ethylenediphosphonic acids of the formula I,
1
where R
1
and R
2
may be identical or different and are hydrogen, a carboxy group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, phenyl, benzyl, or alkyl-substituted aromatic systems, which comprises reacting phosphorous acid (H
3
PO
3
) directly with alkynes.
Reactions of P(III) chlorides with aldehydes: I. Synthesis of primary intermediates of the reactions of aliphatic aldehydes with P(III) chlorides possessing electrophilic properties
作者:M. B. Gazizov、R. A. Khairullin、R. F. Karimova
DOI:10.1134/s1070363213120104
日期:2013.12
investigation of reactions of electrophilic P(III) chlorides with aliphatic aldehydes is developed. Its essence is the removal of HCl impurity from chloride and catalytic blocking of electrophilic center of the carbonyl group. For these purposes nitrogen-containing organic bases and alkyl vinyl ethers are used. Three types of primary intermediates with the nearest P(III) environment POCl2, O2PCl, and O3P are
Lubricating oil composition which comprises:
lubricating base oil,
(A) at least one organophosphorus compound represented by the general formula (I), (II), (III), (IV), (V), (VI), (VII) or (VIII)
and
(B) at least one organomolybdenum compound selected from the group consisting of molybdenum oxysulfide alkylphosphorodithioates and molybdenum oxysulfide alkyldithiocarbamates.
The lubricating oil composition is excellent in antiwear properties, anti-seizure properties, and corrosion resistance, and is suitable for gear oils, and bearing oils, also for internal combustion engine oils and automatic transmission fluids, and further for hydraulic fluids, metal working fluids.