Coordinating Anions: (Phosphino)tetraphenylborate Ligands as New Reagents for Synthesis
摘要:
Anionic, electron-releasing phosphines that incorporate a borate counteranion within the ligand framework are promising reagents for organometallic catalysis. This report describes the synthesis of a new class of monodentate tertiary phosphines built upon the commonly employed tetraphenylborate anion. These new phosphines are highly stable and strongly electron-releasing and readily coordinate transition metals. Moreover, they are promising reagents for catalysis, as demonstrated by their ability to promote the Suzuki cross-coupling of aryl chloride substrates.
The present invention relates to an. organic semiconductive layer which is an electron transport layer and/or an electron injection layer and/or an n-type charge generation layer, the organic semiconductive layer comprising at least one compound of formula (1) wherein R
1
and R
2
are each independently selected from C
1
to C
16
alkyl; Ar
1
is selected from C
6
to C
14
arylene or C
3
to C
12
heteroarylene; Ar
2
is independently selected from C
14
to C
40
arylene or C
8
to C
40
heteroarylene; R
3
is independently selected from H, C
1
to C
12
alkyl or C
10
to C
20
aryl; wherein each of Ar
1
, Ar
2
and R
3
may each independently be unsubstituted or substituted with at least one C
1
to C
12
alky group; n is 0 or 1; and m is 1 in case of n=0; and m is 1 or 2 in case of n=1, phosphine oxide compounds comprised therein and to organic electroluminescent devices comprising such layers and compounds.
Coordinating Anions: (Phosphino)tetraphenylborate Ligands as New Reagents for Synthesis
作者:Christine M. Thomas、Jonas C. Peters
DOI:10.1021/ic0350234
日期:2004.1.1
Anionic, electron-releasing phosphines that incorporate a borate counteranion within the ligand framework are promising reagents for organometallic catalysis. This report describes the synthesis of a new class of monodentate tertiary phosphines built upon the commonly employed tetraphenylborate anion. These new phosphines are highly stable and strongly electron-releasing and readily coordinate transition metals. Moreover, they are promising reagents for catalysis, as demonstrated by their ability to promote the Suzuki cross-coupling of aryl chloride substrates.