The isolation from diethyl ether of ionic [(Me2N)3PI]I and [(CH2CHCH2)2PhPI]I, and the crystallographically characterised molecular ‘spoke’ structure PhMe2PI2
摘要:
Ten new compounds of stoichiometry R(3)PI(2) [R(3) = (o-MeOC(6)H(4))(3), (o-MeOC(6)H(4))(2)Ph, (o-MeOC(6)H(4))Ph(2), (p-FC6H4)(2)Ph, (p-FC6H4)Ph(2), (p-CH2=CHC6H4)Ph(2). (CH2=CHCH2)(2)Ph (C6H11)Ph(2), (PhCH(2)CH(2))(3) or (Me(2)N)(3)] have been prepared by the direct reaction of PR(3) and I-2 in diethyl ether solution. The compounds have been characterised by Raman and solid-state P-31-{(H} magic angle spinning (MAS) and solution; NMR spectroscopy. Solid-state P-31-{H} MAS NMR studies indicate that the predominant solid-state species is the molecular 'spoke' structure R(3)P-I-I; however, in some cases a minor peak was also assignable to the ionic species, [R(3)PI]I. Additionally, solid-state P-31-{H} MAS NMR studies of (Me(2)N)(3)PI2 and (CH(?)2=CHCH2)(2)PhPI(2) indicate that. in contrast to all other compounds of stoichiometry R(3)PI(2) prepared in diethyl ether, they are exclusively ionic, [R(3)PI]I. The crystal structure of PhMe(2)PI(2) shows it to have the molecular 'spoke' geometry, PhMe(2)P-I-I. d(I-I) = 3.408 Angstrom, previously observed for Ph(3)PI(2), in agreement with solid-state P-31-{H} MAS NMR results.
Method for preparing aminoarylborane compounds or derivatives thereof
申请人:Université de Bordeaux I
公开号:EP2881398A1
公开(公告)日:2015-06-10
The present invention provides a process for the preparation of aminoarylborane compounds and derivatives thereof comprising a step of arylation by reacting an aryl chloride with an aminoborane compound in the presence of a catalytic system.
Typically, the transformation comprises, converting Aryl-chloride Ar-Cl with an aminoborane such as
into an aminoarylborane compound of the following formula:
A CONVENIENT SYNTHESIS OF TERTIARY PHOSPHINES FROM RED PHOSPHORUS AND ARYL- OR HETEROARYLETHENES
作者:Lambert Brandsma、Svetlana Arbuzova、Robbert-Jan De Lang、Nina Gusarova、Boris Trofimov
DOI:10.1080/10426509708043551
日期:1997.7.1
Abstract Tertiaryphosphines (RCH2CH2)3P (R=aryl, heteroaryl) have been obtained in good yields by nucleophilic addition of potassium phosphide, generated from red phosphorus, potassium and t-butanol in liquid ammonia, to aryl- and heteroarylethenes
Photochemical transformation of chlorobenzenes and white phosphorus into arylphosphines and phosphonium salts
作者:Marion Till、Verena Streitferdt、Daniel J. Scott、Michael Mende、Ruth M. Gschwind、Robert Wolf
DOI:10.1039/d1cc05691c
日期:——
Chlorobenzenes are important starting materials for the preparation of commercially valuable triarylphosphines and tetraarylphosphonium salts, but their use for the direct arylation of elemental phosphorus has been elusive. Here we describe a simple photochemical route toward such products. UV-LED irradiation (365 nm) of chlorobenzenes, white phosphorus (P4) and the organic superphotoreductant tet