Pd-Catalyzed P–C Cross-Coupling Reactions for Versatile Triarylphosphine Synthesis
摘要:
Practical and versatile syntheses of tertiary phosphine derivatives have been achieved by palladium-catalyzed deformylative P-C cross-coupling reactions of hydroxymethylphosphine derivatives. Sequential couplings of orthogonally protected precursors provide a simple and practical route toward a variety of tertiary phosphine derivatives having aryl substituents in any combination.
Pd-Catalyzed P-C Cross-Coupling of Aryl Bromides and Triflates with Hydroxymethylphosphine Sulfide Derivatives
作者:Hidetoshi Ohta、Qian Xue、Minoru Hayashi
DOI:10.1002/ejoc.201701706
日期:2018.2.14
A powerful method for versatile phosphine synthesis: The P–C coupling of hydroxymethylphosphine sulfide derivatives with various aryl bromides and triflates to yield triarylphosphine sulfides has been developed. The new method was successfully applied to the sequential triple coupling of an orthogonally protected precursor to give an unsymmetrically substituted triarylphosphine sulfide.
Display comprising at least one organic light emitting diode, wherein the at least one organic light emitting diode comprises an anode, a cathode, a light emitting layer between the anode and the cathode, and at least one layer comprising a compound according to formula (I) between the cathode and the light emitting layer:
wherein A
1
and A
2
are independently selected from halogen, CN, substituted or unsubstituted C
1
-C
20
-alkyl or heteroalkyl, C
6
-C
20
-aryl or C
5
-C
20
-heteroaryl, C
1
-C
20
-alkoxy or C
6
-C
20
-aryloxy,
A
3
is selected from substituted or unsubstituted C
6
-C
40
-aryl or C
5
-C
40
-heteroaryl,
m=0, 1 or 2,
n=0, 1 or 2.