Oxidative coupling of Kraft lignin mediated with hypervalent iodine reagent (III) for enhanced removal of dye in water

2022 ◽  
Vol 175 ◽  
pp. 114234
Author(s):  
Qin Chen ◽  
Chang Peng ◽  
Wujun Liu ◽  
Siyang Ning ◽  
Gang Hu ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Kraft Lignin ◽  
Hypervalent Iodine

A New Entry to Carbocyclic Nucleosides: Oxidative Coupling Reaction of Cycloalkenylsilanes with a Nucleobase Mediated by Hypervalent Iodine Reagent

2008 ◽  
Vol 10 (16) ◽  
pp. 3449-3452 ◽  
Author(s):  
Yuichi Yoshimura ◽  
Masatoshi Ohta ◽  
Tatsushi Imahori ◽  
Tomozumi Imamichi ◽  
Hiroki Takahata
Keyword(s):  
Oxidative Coupling ◽  
Coupling Reaction ◽  
Hypervalent Iodine ◽  
Carbocyclic Nucleosides ◽  
Oxidative Coupling Reaction ◽  
New Entry

The aryl iodine-catalyzed organic transformation via hypervalent iodine species generated in situ

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Xuemin Li ◽  
Guangchen Li ◽  
Yifu Cheng ◽  
Yunfei Du
Keyword(s):  
Organic Synthesis ◽  
Oxidative Coupling ◽  
Hypervalent Iodine ◽  
Organic Transformations ◽  
Aryl Iodide ◽  
Oxidative Reaction ◽  
Iodine Species ◽  
Iodine Chemistry

Abstract The application of hypervalent iodine species generated in situ in organic transformations has emerged as a useful and powerful tool in organic synthesis, allowing for the construction of a series of bond formats via oxidative coupling. Among these transformations, the catalytic aryl iodide can be oxidized to hypervalent iodine species, which then undergoes oxidative reaction with the substrates and the aryl iodine regenerated again once the first cyclic cycle of the reaction is completed. This review aims to systematically summarize and discuss the main progress in the application of in situ-generated hypervalent iodine species, providing references and highlights for synthetic chemists who might be interested in this field of hypervalent iodine chemistry.

scholarly journals Convenient Synthesis of 6,7,12,13-Tetrahydro-5H-Cyclohepta[2,1-b:3,4-b’]diindole Derivatives Mediated by Hypervalent Iodine (III) Reagent

Molecules ◽  
2019 ◽  
Vol 24 (5) ◽  
pp. 960 ◽  
Author(s):  
Lei Peng ◽  
Xiaofei Zhang ◽  
Chunhao Yang
Keyword(s):  
Oxidative Coupling ◽  
Biological Activities ◽  
Condensation Reaction ◽  
Large Family ◽  
Membered Ring ◽  
Hypervalent Iodine ◽  
Fischer Indole Synthesis ◽  
Convenient Synthesis ◽  
First Time ◽  
Indole Synthesis

Bisindolyl alkaloids represent a large family of natural and synthetic products that display various biological activities. Among the bisindole compounds, 6,7,12,13-tetrahydro-5H-cyclohepta[2,1-b:3,4-b’]diindoles have received little attention. Only two methods have been developed for the construction of the 6,7,12,13-tetrahydro-5H-cyclohepta[2,1-b:3,4-b’]diindole scaffold thus far, including the classical Fischer indole synthesis conducted by reacting indole-fused cycloheptanone and hydrazines, and the condensation reaction to build the seven-membered ring. Here, we report for the first time a new route to synthesize 6,7,12,13-tetrahydro-5H-cyclohepta[2,1-b:3,4-b’]diindoles through intramolecular oxidative coupling of 1,3-di(1H-indol-3-yl)propanes in the presence of PIFA, DDQ and TMSCl with moderate to excellent yields.

Metal free oxidative coupling of aryl formamides with alcohols for the synthesis of carbamates

2014 ◽  
Vol 12 (14) ◽  
pp. 2172-2175 ◽  
Author(s):  
N. Veera Reddy ◽  
K. Rajendra Prasad ◽  
P. Sudhir Reddy ◽  
M. Lakshmi Kantam ◽  
K. Rajender Reddy
Keyword(s):  
Oxidative Coupling ◽  
New Method ◽  
Hypervalent Iodine ◽  
Direct Transformation ◽  
Metal Free

A new method under metal free conditions has been developed for the direct transformation of N-aryl formamides to corresponding N-aryl carbamates with alcohols using hypervalent iodine reagents as oxidants. The reaction has been postulated to go through the formation of isocyanate intermediates.

A Concise Review of Hypervalent Iodine with Special Reference to Dess- Martin Periodinane

2020 ◽  
Vol 17 (8) ◽  
pp. 946-957
Author(s):  
Ravindra V. Kupwade
Keyword(s):  
Organic Synthesis ◽  
Oxidative Coupling ◽  
Carbonyl Compounds ◽  
Hypervalent Iodine ◽  
Organic Transformations ◽  
Oxidative Functionalization ◽  
The Past ◽  
Concise Review ◽  
Iodine Compounds ◽  
Related Compounds

The chemistry of hypervalent iodine compounds has been experiencing considerable attention of organic chemists during the past few years. Hypervalent iodine reagents have found ubiquitous applications in organic synthesis because of their mild and highly chemoselective oxidizing properties, easy commercial availability, and environmental benign character. Along with oxidation of alcohol, they have also shown to be useful in number of organic transformations which include oxidative functionalization of carbonyl compounds, catalytic imidations, cyclization, oxidative coupling of phenols, amines and related compounds. Among various hypervalent iodine reagents, iodine-V compounds (λ5-iodanes) have attracted much attention in recent years. This review narrates the particular advances in iodine (V) reagents with special emphasis on the use of DMP in organic transformations.

scholarly journals Clean and Direct Synthesis of α,α′-Bithiophenes and Bipyrroles by Metal-Free Oxidative Coupling Using Recyclable Hypervalent Iodine(III) Reagents

2009 ◽  
Vol 57 (7) ◽  
pp. 710-713 ◽  
Author(s):  
Toshifumi Dohi ◽  
Koji Morimoto ◽  
Chieko Ogawa ◽  
Hiromichi Fujioka ◽  
Yasuyuki Kita
Keyword(s):  
Oxidative Coupling ◽  
Direct Synthesis ◽  
Hypervalent Iodine ◽  
Metal Free
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