Year: 1990
Type: article
Abstract: 1λ3,3λ3-Diphosphanes of the type R2PCF2P(H)CF3 [R = Me (3), Et (5), Cyclohexyl (6), Ph (7)] are formed in acceptable yields (40-75%) by reacting perfluoro-2-phosphapropene F3CP=CF2 (1) with the corresponding secondary phosphanes R2PH. By reaction with sulfur, compounds 3, 5 and 7 selectively yield the corresponding monosulfur derivates R2P(S)CF2P(H)CF3 [R = Me (8), Et (9), Ph (10)]. Treatment of 3 or 7 with dimethylamine (molar ratio 1/2) leads via HF elimination and addition of Me2NH to the aminophosphanes R2PCHFP(NMe2)CF3 [R = Me (11), Ph (12)]. In a similar procedure HF has been eliminated from 3 by 1,4-diazabicyclo[2.2.2]octane (DABCO), and on addition of methanol or ethanol to the 1,3-diphosphapropene intermediate, the alkoxy compounds Me2PCHFP(OR)CF3 [R = Me (13), Et (14)] have been obtained.
Source: Zeitschrift für Naturforschung B
Authors: Joseph Grobe, Gudrun Lange, Duc Le Van
Institution: University of Münster
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,712
OpenAlex ID: W4241868956