The angular trifluoromethyl group. Part 4. Synthesis of the 9,9,9-trifluoro analogue of the Wieland–Miescher ketone

1991 ◽  
pp. 1121-1125 ◽  
Author(s):  
Jean-Claude Blazejewski ◽  
Frédéric Le Guyader ◽  
Claude Wakselman
Keyword(s):  
Trifluoromethyl Group ◽  
Group Part

CHEMISTRY OF THE TRIFLUOROMETHYL GROUP: PART V. INFRARED SPECTRA OF SOME PHOSPHORUS COMPOUNDS CONTAINING CF3

1962 ◽  
Vol 40 (3) ◽  
pp. 393-398 ◽  
Author(s):  
M. A. A. Beg ◽  
H. C. Clark
Keyword(s):  
General Formula ◽  
Infrared Spectra ◽  
Boron Trifluoride ◽  
Phosphorus Compounds ◽  
Trifluoromethyl Group ◽  
Absorption Bands ◽  
Group Part

The infrared spectra of several series of trifluoromethyl-phosphorus compounds are correlated, the compounds examined being the iodides CF3PI2 and (CF3)2PI, the methyl-trifluoromethyl-phosphines of the general formula (CH3)nP(CF3)3−n, where n = 1, 2, or 3, and the analogous phenyl-trifluoromethyl-phosphines. Satisfactory assignments are made for the majority of absorption bands in the 650–4000 cm−1 region. The infrared spectra of some phosphine – boron trifluoride adducts are also examined and assignments of the principal bands are made.

CHEMISTRY OF THE TRIFLUOROMETHYL GROUP: PART IV. DIPHENYLTRIFLUOROMETHYLPHOSPHINE AND COMPLEX FORMATION BY PHENYLTRIFLUOROMETHYLPHOSPHINES

1962 ◽  
Vol 40 (2) ◽  
pp. 283-288 ◽  
Author(s):  
M. A. A. Beg ◽  
H. C. Clark
Keyword(s):  
Complex Formation ◽  
Trifluoromethyl Group ◽  
Hydrolysis Of ◽  
Group Part

Three methods of preparing diphenyltrifluoromethylphosphine are described. The hydrolysis of the phosphine to diphenylphosphinic acid and fluoroform, and the formation of dibromo-and diiodo-phosphoranes from the phosphine are reported. The adducts (C6H5)3P•BF3 and (C6H5)2CF3P•BF3 are described and the latter is found to be the less stable. With platinum (II) chloride, the complexes trans-[(C6H5)2PCF3]2PtCl2 and trans-[C6H5PCF3)2]2PtCl2 are formed. The properties of the BF3 adducts and PtCl2 complexes are interpreted in terms of the electronegativity and size of the trifluoromethyl group.

CHEMISTRY OF THE TRIFLUOROMETHYL GROUP: PART III. PHENYLBISTRIFLUOROMETHYLPHOSPHINE AND RELATED COMPOUNDS

1961 ◽  
Vol 39 (3) ◽  
pp. 564-570 ◽  
Author(s):  
M. A. A. Beg ◽  
H. C. Clark
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Trifluoromethyl Group ◽  
Physical And Chemical ◽  
Related Compounds ◽  
Group Part ◽  
And Chemical Properties ◽  
Mechanism Of The Reaction

The reaction of trifluoroiodomethane with tetraphenylcyclotetraphosphine leads to the formation of phenylbistrifluoromethylphosphine and phenyltrifluoromethyliodophosphine. The mechanism of the reaction is discussed and the physical and chemical properties of these compounds are reported. Bromine reacts with phenylbistrifluoromethylphosphine to form phenylbistrifluoromethyldibromophosphorane which is hvdrolyzed to phenyltrifluoromethylphosphinic acid, C6H5(CF3)P(O)OH.

Sign in / Sign up

Export Citation Format

Share Document