scholarly journals Transition-Metal-Catalyzed Diarylation of Isocyanides with Triarylbismuthines for the Selective Synthesis of Imine Derivatives

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4271
Author(s):  
Shintaro Kodama ◽  
Yuki Yamamoto ◽  
Yohsuke Kobiki ◽  
Hitomi Matsubara ◽  
Cong Chi Tran ◽  
...  
Keyword(s):  
Transition Metal ◽  
The Other ◽  
Selective Synthesis ◽  
Rhodium Catalysts ◽  
Other Hand ◽  
Palladium Catalyzed ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

The transition-metal-catalyzed diarylation of isocyanides with triarylbismuthines was investigated in detail, and rhodium catalysts such as [RhCl(nbd)]2 were found to selectively afford N-alkyl diaryl ketimines. On the other hand, palladium-catalyzed diarylation proceeded with the incorporation of two molecules of isocyanide, preferentially yielding N,N’-dialkyl or N,N’-diaryl α-diimines. In addition, a cascade synthesis of 2,3-diarylquinoxalines starting from the palladium-catalyzed diarylation of isocyanides with triarylbismuthines was successfully achieved.

Copper-Catalyzed [3+2]/[3+2] Carboannulation of Dienynes and Arylsulfonyl Chlorides Enabled by Smiles Rearrangement: Access to Cyclopenta[a]indene-Fused Quinolinones

2021 ◽  
Author(s):  
Liwei Zhou ◽  
Xiaodong Liu ◽  
Haiyan Lu ◽  
Guobo Deng ◽  
Yun Liang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Organic Synthesis ◽  
The Other ◽  
Cycloaddition Reactions ◽  
Smiles Rearrangement ◽  
Other Hand ◽  
Transition Metal Catalyzed ◽  
Carbocyclic Rings ◽  
Metal Catalyzed

On one hand, the construction of two fused five-membered carbocyclic rings remains an extremely challenging topic in organic synthesis. On the other hand, transition-metal-catalyzed dienynes cycloaddition reactions have become one...

Transition metal-catalyzed reactions in heterocyclic chemistry

2002 ◽  
Vol 74 (8) ◽  
pp. 1327-1337 ◽  
Author(s):  
Irina P. Beletskaya
Keyword(s):  
Transition Metal ◽  
Heterocyclic Compounds ◽  
Heterocyclic Chemistry ◽  
Substitution Reactions ◽  
Multiple Bonds ◽  
Palladium Catalyzed ◽  
Transition Metal Catalyzed ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

The palladium-catalyzed substitution reactions forming carbon­carbon and carbon­element bonds, as well as nickel-catalyzed addition of E­H and E­E' bonds across multiple bonds, are considered in their application to the chemistry of heterocyclic compounds.

Regiocontrolled palladium-catalyzed and copper-mediated C–H bond functionalization of protectedl-histidine

2014 ◽  
Vol 12 (23) ◽  
pp. 3792-3796 ◽  
Author(s):  
Amit Mahindra ◽  
Rahul Jain
Keyword(s):  
Transition Metal ◽  
Aryl Halides ◽  
Bond Functionalization ◽  
Palladium Catalyzed ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed ◽  
Coupling Partner

Regiocontrolled transition-metal-catalyzed C–H bond arylation of protectedl-histidine with aryl halides as the coupling partner is reported.

Transition-Metal-Catalyzed Cross-Coupling with Non-Diazo Carbene Precursors

Synlett ◽  
2018 ◽  
Vol 30 (05) ◽  
pp. 542-551 ◽  
Author(s):  
Jianbo Wang ◽  
Kang Wang
Keyword(s):  
Transition Metal ◽  
Cross Coupling ◽  
Diazo Compounds ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Carbon Carbon Bond ◽  
Palladium Catalyzed ◽  
Fischer Carbenes ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Transition-metal-catalyzed cross-coupling reactions through metal carbene migratory insertion have emerged as powerful methodology for carbon–carbon bond constructions. Typically, diazo compounds (or in situ generated diazo compounds from N-tosylhydrazones) have been employed as the metal carbene precursors for this type of cross-coupling reactions. Recently, cross-coupling reactions employing non-diazo carbene precursors, such as conjugated ene-yne-ketones, allenyl ketones, alkynes, cyclopropenes, and Cr(0) Fischer carbenes, have been developed. This account will summarize our efforts in the development of transition-metal-catalyzed cross-coupling reactions with these non-diazo carbene precursors.1 Introduction2 Cross-Coupling with Ene-yne-ketones, Allenyl Ketones, and Alkynes3 Cross-Coupling Involving Ring-Opening of Cyclopropenes4 Palladium-Catalyzed Cross-Coupling with Chromium(0) Fischer Carbenes5 Conclusion

Direct ortho Arylation of Anisoles via the Formation of Four-Membered Lithiumcycles/Palladacycles

Synlett ◽  
2017 ◽  
Vol 28 (15) ◽  
pp. 2046-2050 ◽  
Author(s):  
Jianhui Huang ◽  
Xiaoyu Xiong ◽  
Ranran Zhu ◽  
Lin Huang ◽  
Shuqin Chang
Keyword(s):  
Transition Metal ◽  
Palladium Catalyzed ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

We report here our latest discovery on the directed lithiation and palladium-catalyzed arylation of anisoles. During this research, the formation of a four-membered lithiumcycle followed by transmetalation to the corresponding palladacycle has been achieved, which is difficult to be obtained from palladium-catalyzed C–H activation processes. This approach has provided an alternative way of introducing functionalities to arenes such as anisoles, thioanisoles, and anilines. This approach also features an excellent monoselectivity compared with reactions under transition-metal-catalyzed conditions.

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