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Regio- and Stereoselective Dimerization of Arylacetylenes and Optical and Electrochemical Studies of (E)-1,3-Enynes
被引:26
作者:
Morozov, Oleg S.
[1
]
Asachenko, Andrey F.
[1
]
Antonov, Denis V.
[2
,3
]
Kochurov, Vitaly S.
[2
,3
]
Paraschuk, Dmitry Yu.
[2
,3
]
Nechaev, Mikhail S.
[1
,4
]
机构:
[1] RAS, AV Topchiev Inst Petrochem Synth, Moscow 119991, Russia
[2] Moscow MV Lomonosov State Univ, Ctr Int Laser, Moscow 119991, Russia
[3] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia
[4] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
关键词:
alkynes;
biphasic catalysis;
cyclic voltammetry;
enynes;
N-heterocyclic carbenes;
palladium;
UV/vis spectroscopy;
TO-HEAD DIMERIZATION;
TERMINAL ALKYNES;
CATALYZED DIMERIZATION;
AROMATIC DIYNES;
COMPLEXES;
SYSTEM;
ENYNES;
OLIGOMERIZATION;
CHEMISTRY;
LIGAND;
D O I:
10.1002/adsc.201400062
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
The N-heterocyclic carbene palladium complex (SIPr)Pd(cinnamyl)Cl [SIPr=N,N'-bis-(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene) promotes regio- and stereospecific dimerization of a variety of arylalkynes to give (E)-1,3-enynes in good to excellent yields. An efficient and practical procedure for their synthesis was developed using a biphasic aqueous alkali/heptane system. Optical and electronic properties of (E)-1,3-enynes are highly tunable. Depending on the nature of the substituents, HOMO energies vary in the range 5.3-6.0 eV. (E)-1,3-Enynes can exhibit intense photoluminescence in the spectral region 350-500 nm.
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页码:2671 / 2678
页数:8
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