ChemInform Abstract: Facile Synthesis of 3-Amino-5-aryl-1,2,4-oxadiazoles via PIDA-Mediated Intramolecular Oxidative Cyclization.

ChemInform ◽  
2016 ◽  
Vol 47 (42) ◽  
Author(s):  
Kuan Lu ◽  
Liancheng Duan ◽  
Boxuan Xu ◽  
Weile Yin ◽  
Di Wu ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Facile Synthesis ◽  
Intramolecular Oxidative Cyclization

Facile synthesis of 3-amino-5-aryl-1,2,4-oxadiazoles via PIDA-mediated intramolecular oxidative cyclization

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54277-54280 ◽  
Author(s):  
Kuan Lu ◽  
Liancheng Duan ◽  
Boxuan Xu ◽  
Weile Yin ◽  
Di Wu ◽  
...  
Keyword(s):  
Functional Groups ◽  
Simple Procedure ◽  
Oxidative Cyclization ◽  
Ambient Condition ◽  
Facile Synthesis ◽  
Metal Free ◽  
Intramolecular Oxidative Cyclization

Advantages: ambient condition and simple procedure. Additive and metal free method. Up to 25 examples and 79% yield. Wide functional groups tolerance.

Facile synthesis of fused polycyclic compounds via intramolecular oxidative cyclization/aromatization of β-tetralone or β-tetralone oximes

2018 ◽  
Vol 16 (46) ◽  
pp. 9003-9010 ◽  
Author(s):  
Yan Jiang ◽  
Shuo-Wen Yu ◽  
Yi Yang ◽  
Ying-Le Liu ◽  
Xiao-Ying Xu ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Facile Synthesis ◽  
Polycyclic Compounds ◽  
Intramolecular Oxidative Cyclization

A mild and efficient NXS promoted intramolecular oxidative cyclization/aromatization of β-tetralone or β-tetralone oximes has been explored.

Convenient Synthesis of Oxazolo[5,4-h]pyrrolo[4,3,2-de]quino­lones via Hypervalent Iodine Mediated Intramolecular Oxidative Cyclization

Synthesis ◽  
2017 ◽  
Vol 28 (19) ◽  
pp. 4517-4522
Author(s):  
Li-Ping Sun ◽  
Chun-Meng Wang ◽  
Sheng-Wei Yang ◽  
Kai-Xiang Tang ◽  
Tian-Hong Gao ◽  
...  
Keyword(s):  
Functional Groups ◽  
Practical Method ◽  
Oxidative Cyclization ◽  
Hypervalent Iodine ◽  
Air Atmosphere ◽  
Convenient Synthesis ◽  
Reaction Proceeds ◽  
Intramolecular Oxidative Cyclization

A convenient and practical method has been developed for the synthesis of substituted oxazolo[5,4-h]pyrrolo[4,3,2-de]quinolones via the intramolecular oxidative cyclization by using PIFA as oxidant and TMSOTf as additive in DCE under an air atmosphere. The reaction proceeds in good yields and has good functional groups tolerance.

Metal–organic framework mediated expeditious synthesis of benzimidazole and benzothiazole derivatives through an oxidative cyclization pathway

2020 ◽  
Vol 44 (3) ◽  
pp. 1021-1027
Author(s):  
Velayudham Sankar ◽  
Peramaiah Karthik ◽  
Bernaurdshaw Neppolian ◽  
Bitragunta Sivakumar
Keyword(s):  
Heterogeneous Catalyst ◽  
Good Yield ◽  
Metal Organic Framework ◽  
Oxidative Cyclization ◽  
Facile Synthesis ◽  
Benzothiazole Derivatives ◽  
Metal Organic ◽  
Organic Framework

Herein, we report facile synthesis of various benzimidazoles and benzothiazoles by using the NH2-MIL-125(Ti) MOF as an efficient oxidant-free heterogeneous catalyst with good yield.

ChemInform Abstract: Facile Synthesis of Benzofurans via Copper-Catalyzed Aerobic Oxidative Cyclization of Phenols and Alkynes.

ChemInform ◽  
2013 ◽  
Vol 44 (44) ◽  
pp. no-no
Author(s):  
Wei Zeng ◽  
Wanqing Wu ◽  
Huanfeng Jiang ◽  
Liangbin Huang ◽  
Yadong Sun ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Facile Synthesis

Selectfluor™-catalyzed oxidative cyclization of ynamides enables facile synthesis of oxazolidine-2,4-diones

2019 ◽  
Vol 6 (21) ◽  
pp. 3644-3648 ◽  
Author(s):  
Guangke He ◽  
Yuan Li ◽  
Zilun Yu ◽  
Zhaoqiang Chen ◽  
Yongming Tang ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Attractive Alternative ◽  
Facile Synthesis

A Selectfluor™-catalyzed oxidative cyclization of ynamides employing DMSO as the solvent and oxidant was achieved, affording oxazolidine-2,4-diones in moderate to excellent yields with high chemo-selectivity. The method offers an attractive alternative to existing protocols.

Gold/Lewis acid catalyzed oxidative cyclization involving activation of nitriles

2020 ◽  
Vol 56 (99) ◽  
pp. 15581-15584
Author(s):  
Ali Wang ◽  
Xin Xie ◽  
Chunli Zhang ◽  
Yuanhong Liu
Keyword(s):  
Lewis Acid ◽  
Oxidative Cyclization ◽  
Facile Synthesis ◽  
Acid Catalyzed

A dual gold/Lewis acid-catalyzed oxidative cyclization of alkyne–nitriles with water or alcohol allows a facile synthesis of functionalized isoquinolin-1(2H)-ones and 1-alkoxy-isoquinolines.

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