scholarly journals Synthesis of Azacarbolines via PhIO2-Promoted Intramolecular Oxidative Cyclization of α-Indolylhydrazones

2021 ◽  
Author(s):  
Matteo Corrieri ◽  
Lucia De Crescentini ◽  
Fabio Mantellini ◽  
Giacomo Mari ◽  
Stefania Santeusanio ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Intramolecular Oxidative Cyclization

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.

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.

Organoiodine(iii) mediated intramolecular oxidative cyclization of 1-(3-arylisoquinolin-1-yl)-2-(arylmethylene)hydrazines to 5-aryl-3-(aryl)-[1,2,4]triazolo[3,4-a] isoquinolines

RSC Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 3781-3785 ◽  
Author(s):  
Pitchai Manivel ◽  
Kamalakannan Prabakaran ◽  
Upasana Banerjee ◽  
Fazlur-Rahman Nawaz Khan ◽  
Euh Duck Jeong ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Bond Formation ◽  
Oxidative Cyclization ◽  
Hypervalent Iodine ◽  
Intramolecular Oxidative Cyclization

Intramolecular C–N bond formation is achieved through oxidative cyclization of 1-(3-arylisoquinolin-1-yl)-2-(arylmethylene)hydrazines, 3, in the presence of hypervalent iodine oxidant and dichloromethane at ambient temperature.

Intramolecular oxidative cyclization of alkenes by rhodium/cobalt porphyrins in water

2014 ◽  
Vol 1 (7) ◽  
pp. 544-548 ◽  
Author(s):  
Lin Yun ◽  
Zikuan Wang ◽  
Xuefeng Fu
Keyword(s):  
Oxidative Cyclization ◽  
Cobalt Porphyrins ◽  
Construction Strategy ◽  
Intramolecular Oxidative Cyclization

Heterocycle construction strategy: intramolecular oxidative cyclization of alkenes was realized by rhodium(iii)/cobalt(iii) porphyrins in water.

A convenient approach for the preparation of imidazo[1,2-a]-fused bicyclic frameworks via IBX/NIS promoted oxidative annulation

2019 ◽  
Vol 17 (40) ◽  
pp. 9001-9007 ◽  
Author(s):  
Zsófia Makra ◽  
László G. Puskás ◽  
Iván Kanizsai
Keyword(s):  
Oxidative Cyclization ◽  
One Pot ◽  
Convenient Approach ◽  
Intramolecular Oxidative Cyclization

IBX/NIS induced intramolecular oxidative cyclization of Mannich substrates is reported, affording highly diverse imidazo[1,2-a]-pyridines, -pyrimidines and -pyrazines in up to 93% isolated yield. In addition, one-pot procedure is also represented.

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