The angular trifluoromethyl group. Part 1. Total synthesis of 13-trifluoromethyl estrogens

1986 ◽  
pp. 337 ◽  
Author(s):  
Jean-Claude Blazejewski ◽  
R�gine Dorme ◽  
Claude Wakselman
Keyword(s):  
Total Synthesis ◽  
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.

Sign in / Sign up

Export Citation Format

Share Document