Convenient Modular Syntheses of Fluorous Secondary Phosphines and Selected Derivatives
作者:Charlotte Emnet、Róbert Tuba、J. A. Gladysz
DOI:10.1002/adsc.200505145
日期:2005.11
Reactions of the fluorous primary phosphines Rfn(CH2)2PH2 [Rfn=(CF2)n−1CF3; n=6, 8, 10] and Rfn′CHCH2 [(n′=6, 8, 10) (1 : 1; THF, reflux) in the presence of AIBN give the title compounds [Rfn(CH2)2][Rfn′(CH2)2]PH [n/n′=6/6 (4, 55%), 8/8 (5, 58%), 10/10 (6, 53%), 8/6 (7, 52%), 10/8 (8, 51%)] as low-melting white solids on up to 10-g scales. The chiral tertiary phosphine [Rf6(CH2)2][Rf8(CH2)2][Rf10(CH2)2]P