Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Di-Han Zhang"'
Publikováno v:
Chemistry, an Asian journal. 14(17)
The nucleophilic iron complex Bu4 N[Fe(CO)3 (NO)] (TBA[Fe]) is an active catalyst in C-H-amination but also in proton-transfer catalysis. Herein, we describe the successful use of this complex as a proton-transfer catalyst in the cyclocondensation re
Publikováno v:
Advanced Synthesis & Catalysis. 358:2469-2479
The base metal complex tetrabutylammonium nitrosyltricarbonylferrate {Bu4N[Fe(CO)3(NO)] (TBA[Fe])} – catalyzes the conjugate addition of ketones to polar olefins. The reaction is applicable to a wide range of substrates leading to interesting build
Publikováno v:
Synlett. 25:2293-2296
A series of novel methylenecyclopropane-triazoles have been successfully prepared. Their intramolecular nucelophilic cyclizations have been explored in the presence of Yb(NTf 2 ) 3 catalyst, giving the corresponding triazole containing six- and seven
Publikováno v:
Accounts of Chemical Research. 47:913-924
Gold catalysis is often the key step in the synthesis of natural products, and is a powerful tool for tandem or domino reaction processes. Both gold salts and complexes are among the most powerful soft Lewis acids for electrophilic activation of carb
Publikováno v:
Chemistry - A European Journal. 19:13668-13673
At the end of its tether: A new synthetic protocol for the preparation of polycyclic indole derivatives has been developed from a rhodium(I)-catalyzed cycloisomerization of a nitrogen-tethered indole and alkylidenecyclopropane, affording the correspo
Rhodium(I)-catalyzed [3+2] intramolecular cycloaddition of alkylidenecyclopropane–propargylic esters
Autor:
Min Shi, Di-Han Zhang
Publikováno v:
Tetrahedron Letters. 53:487-490
An interesting rhodium(I)-catalyzed [3+2] intramolecular cycloaddition of alkylidenecyclopropanes 1 containing propargylic esters has been described in this context. A variety of bicyclo[3.3.0]octene derivatives were obtained in moderate to good yiel
Publikováno v:
Angewandte Chemie. 123:2631-2635
The pyrrolidine derivatives can be converted into the corresponding pyrrole as is shown for (III).
Publikováno v:
European Journal of Organic Chemistry. 2010:5454-5459
Gold(I) can catalyze the diacetoxylation of methylenecyclopropanes to produce the corresponding diacetoxylated products in moderate to good yields in acetic acid in the presence of iodosobenzene diacetate via C-C bond breaking under mild condition
Publikováno v:
ChemInform. 46
The same products are obtained regardless whether the substrates are applied as their (E)- or (Z)-isomers.
Publikováno v:
ChemInform. 45
Gold catalysis is often the key step in the synthesis of natural products, and is a powerful tool for tandem or domino reaction processes. Both gold salts and complexes are among the most powerful soft Lewis acids for electrophilic activation of carb