A method for accessing sulfanylfurans from homopropargylic alcohols and sulfonyl hydrazides

2017 ◽  
Vol 15 (17) ◽  
pp. 3571-3574 ◽  
Author(s):  
Xiaodong Yang ◽  
Rulong Yan
Keyword(s):  
Cyclization Reaction ◽  
Homopropargylic Alcohols

A sulfenylation/cyclization reaction has been developed for the synthesis of sulfanylfurans in the presence of iodine.

Metal-free synthesis of 3-methylthiofurans from homopropargylic alcohols and DMSO via a tandem sulfenylation/cyclization reaction in a one-pot manner

2016 ◽  
Vol 3 (12) ◽  
pp. 1746-1749 ◽  
Author(s):  
Zhenyu An ◽  
Yue She ◽  
Xiaodong Yang ◽  
Xiaobo Pang ◽  
Rulong Yan
Keyword(s):  
Cyclization Reaction ◽  
One Pot ◽  
Metal Free ◽  
Homopropargylic Alcohols

A tandem sulfenylation/cyclization reaction for the synthesis of 3-methylthiofurans from homopropargylic alcohols and DMSO in a one-pot manner has been developed.

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.

Quaternary Carbon Center Forming [3 + 2] Cyclization Reaction by Adjusting the Substituents of Substrates

2019 ◽  
Vol 84 (21) ◽  
pp. 13871-13880 ◽  
Author(s):  
Xie-Chao Yang ◽  
Jin-Yu Liu ◽  
Zhen Liu ◽  
Xiu-Qin Hu ◽  
Peng-Fei Xu
Keyword(s):  
Cyclization Reaction ◽  
Quaternary Carbon

The unique substitution-cyclization reaction cascade inspired highly selective H2Sn probe development

2020 ◽  
Vol 304 ◽  
pp. 127382 ◽  
Author(s):  
Li Fu ◽  
Chunfei Chen ◽  
Wenqiang Chen ◽  
Jun Huang ◽  
Junan Xiao ◽  
...  
Keyword(s):  
Cyclization Reaction

New Stereoselective Entry to Azaspirocyclic Nucleus of Halichlorine and Pinnaic Acids by Radical Translocation/Cyclization Reaction

2003 ◽  
Vol 5 (17) ◽  
pp. 3017-3020 ◽  
Author(s):  
Kiyosei Takasu ◽  
Hiroshi Ohsato ◽  
Masataka Ihara
Keyword(s):  
Cyclization Reaction

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

Diastereoselective [3 + 1] Cyclization Reaction of Oxindolyl Azaoxyallyl Cations with Sulfur Ylides: Assembly of 3,3′-Spiro[β-lactam]-oxindoles

2021 ◽  
Vol 23 (4) ◽  
pp. 1451-1456
Author(s):  
Hai-Jun Leng ◽  
Qing-Zhu Li ◽  
Peng Xiang ◽  
Ting Qi ◽  
Qing-Song Dai ◽  
...  
Keyword(s):  
Cyclization Reaction ◽  
Sulfur Ylides

Enantioselective synthesis of chiral 3-alkyl-3-nitro-4-chromanones via chiral thiourea-catalysed intramolecular Michael-type cyclization

2021 ◽  
Author(s):  
Huiqing Chen ◽  
Jie Tang ◽  
Ting Liu ◽  
Li-Fang Yu ◽  
Dong Xing ◽  
...  
Keyword(s):  
Enantioselective Synthesis ◽  
Cyclization Reaction ◽  
Rapid Construction

Herein we report an enantioselective method for the rapid construction of chiral 3-nitro-4-chromanones via a chiral thiourea-catalyzed intramolecular Michael-type cyclization reaction. With this method, a series of 3,3-disubstituted-3-nitro-4-chromanones bearing contiguous...

Sulfonated Expanded Polystyrene Waste Promotes the (+)-Citronellal Cyclization Reaction: A Sustainable Alternative Process for Biomass Valorization

2021 ◽  
Author(s):  
Maria Stella Palhares Ribeiro ◽  
Rayane Rocha Silva Pinto ◽  
Kelly A. da Silva Rocha ◽  
Camila Grossi Vieira
Keyword(s):  
Expanded Polystyrene ◽  
Cyclization Reaction ◽  
Biomass Valorization ◽  
Alternative Process ◽  
Polystyrene Waste
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