Highly Regioselective Synthesis of 2,3-Disubstituted Indenes via a Novel Palladium-Catalyzed Cyclization Reaction of Propargylic Carbonates with Carbon Nucleophiles

2006 ◽  
Vol 8 (25) ◽  
pp. 5777-5780 ◽  
Author(s):  
Xin-Hua Duan ◽  
Li-Na Guo ◽  
Hai-Peng Bi ◽  
Xue-Yuan Liu ◽  
Yong-Min Liang
Keyword(s):  
Cyclization Reaction ◽  
Regioselective Synthesis ◽  
Carbon Nucleophiles ◽  
Palladium Catalyzed

Palladium-catalyzed intermolecular tandem cyclization reaction: a highly regioselective synthesis of functionalized 3H-spiro[isobenzofuran-1,3′-isochroman] scaffolds

2017 ◽  
Vol 15 (11) ◽  
pp. 2403-2410 ◽  
Author(s):  
Liang Wang ◽  
Xuehu Li ◽  
Hua Tao ◽  
Xiang Zhou ◽  
Xihong Lu ◽  
...  
Keyword(s):  
Cyclization Reaction ◽  
Regioselective Synthesis ◽  
Palladium Catalyzed ◽  
Tandem Cyclization

A highly regioselective synthesis of functionalized 3H-spiro[isobenzofuran-1,3′-isochroman] scaffolds via palladium-catalyzed tandem cyclization.

Synthesis of Allenyl Ketones by the Palladium-Catalyzed Carbonylation of 2-Alkynyl Carbonates in the Presence of Soft Carbon Nucleophiles

Synlett ◽  
1991 ◽  
Vol 1991 (09) ◽  
pp. 697-698 ◽  
Author(s):  
Tadakatsu Mandai ◽  
Hiroaki Kunitomi ◽  
Kiyoto Higashi ◽  
Mikio Kawada ◽  
Jiro Tsuji
Keyword(s):  
Carbon Nucleophiles ◽  
Palladium Catalyzed ◽  
Soft Carbon

Synthesis of Novel Bis-pyrazoles via Electrophilic Cyclization

2019 ◽  
Vol 16 (6) ◽  
pp. 511-516
Author(s):  
Adnan Cetin
Keyword(s):  
13C Nmr ◽  
Cyclization Reaction ◽  
Electrophilic Cyclization ◽  
Pyrazole Derivatives ◽  
Spectral Analyses ◽  
Mass Spectral ◽  
Palladium Catalyzed ◽  
Ft Ir ◽  
Reaction Compound

Efficient steps towards the synthesis of novel (phenyl)(1'-aryl-1,5,5'-triphenyl[3,3'-bi-1Hpyrazol]- 4-yl)methanones 4a-e were developed. The procedure starts from 1-(4-benzoyl-1,5-diphenyl- 1H-3-pyrazolyl)-3-phenyl-2-propyn-1-one (2) which was synthesized by a palladium catalyzed crosscoupling reaction. Compound 2 reacted with various hydrazines to give (E)-(phenyl)[1,5-diphenyl-3- [3-phenyl-1-(2-arylhydrazono)-2-propyn-1-yl]-1H-4-pyrazolyl]methanones E-3a-e. The bis-pyrazole derivatives 4a-e were synthesized from electrophilic cyclization reaction of α,β-acetylenic hydrazones E-3a-e and copper(I) iodide. All synthesized compounds were characterized by FT-IR, 1H, 13C NMR and Mass spectral analyses.

Regioselective Synthesis of 2,3‐Dihydrobenzo[ f ]isoindolones via Ag‐Catalyzed Sequential Ugi 4CR/Cascade Radical Cyclization Reaction

2021 ◽  
Vol 363 (4) ◽  
pp. 1038-1043
Author(s):  
Ying‐Chun He ◽  
Yan‐Mei Yan ◽  
Zhen‐Xing Ren ◽  
Yong‐Zhao Wang ◽  
Qiang Yu ◽  
...  
Keyword(s):  
Radical Cyclization ◽  
Cyclization Reaction ◽  
Regioselective Synthesis

Thioamide dianions derived from N-arylmethyl thioamides: Generation and application as carbon nucleophiles adjacent to the nitrogen atom

2010 ◽  
Vol 82 (3) ◽  
pp. 541-554 ◽  
Author(s):  
Toshiaki Murai
Keyword(s):  
Nitrogen Atom ◽  
Electronic Properties ◽  
Cyclization Reaction ◽  
Carbon Nucleophiles ◽  
Ready Availability

This review illustrates the ready availability of thioamide dianions and their versatility as carbon nucleophiles adjacent to the nitrogen atom. The products derived from the addition of thioamide dianions to a range of electrophiles can participate in a cyclization reaction to form nitrogen-containing heterocycles. The electronic properties of thioamide dianions are also considered.

Palladium-catalyzed regioselective synthesis of benzosultams from functionalized ynamides and benzotriazoles/tetrazoles

Tetrahedron ◽  
2017 ◽  
Vol 73 (19) ◽  
pp. 2766-2773 ◽  
Author(s):  
Alla Siva Reddy ◽  
A. Leela Siva Kumari ◽  
K.C. Kumara Swamy
Keyword(s):  
Regioselective Synthesis ◽  
Palladium Catalyzed

Ligand-Controlled Palladium-Catalyzed Alkoxycarbonylation of Allenes: Regioselective Synthesis of α,β- and β,γ-Unsaturated Esters

2015 ◽  
Vol 137 (26) ◽  
pp. 8556-8563 ◽  
Author(s):  
Jie Liu ◽  
Qiang Liu ◽  
Robert Franke ◽  
Ralf Jackstell ◽  
Matthias Beller
Keyword(s):  
Regioselective Synthesis ◽  
Unsaturated Esters ◽  
Palladium Catalyzed
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