NaBrO3/guanidinium-based sulfonic acid: as a transition metal- and strong inorganic acid-free oxidation system for alcohols and alkyl arenes

2016 ◽  
Vol 40 (3) ◽  
pp. 2079-2082 ◽  
Author(s):  
Ahmad Shaabani ◽  
Mohammad Sadegh Laeini ◽  
Shabnam Shaabani ◽  
Mozhdeh Seyyedhamzeh
Keyword(s):  
Transition Metal ◽  
Organic Compounds ◽  
Catalytic System ◽  
Sulfonic Acid ◽  
Room Temperature ◽  
Inorganic Acid ◽  
Oxidation Of Organic Compounds ◽  
Free Oxidation ◽  
Oxidation System

A new catalytic system for the oxidation of organic compounds in good to excellent yields at room temperature.

scholarly journals Efficient, Solvent-Free Oxidation of Organic Compounds with Potassium Dichromate in the Presence of Lewis Acids

Molecules ◽  
2001 ◽  
Vol 6 (11) ◽  
pp. 900-908 ◽  
Author(s):  
Iraj Mohammadpoor-Baltork ◽  
Majid Sadeghi ◽  
Abol-Hassan Adibi
Keyword(s):  
Organic Compounds ◽  
Lewis Acids ◽  
Potassium Dichromate ◽  
Solvent Free ◽  
Oxidation Of Organic Compounds ◽  
Free Oxidation

Intramolecular Hydroalkoxylation/Reduction and Hydroamination/Reduction of Unactivated Alkynes Using a Silane–Iodine Catalytic System

Synthesis ◽  
2017 ◽  
Vol 49 (18) ◽  
pp. 4199-4204 ◽  
Author(s):  
Masatoshi Shibuya ◽  
Shoji Fujita ◽  
Yoshihiko Yamamoto
Keyword(s):  
Transition Metal ◽  
Catalytic System ◽  
Room Temperature ◽  
Metal Free

A transition-metal-free silane–iodine catalytic system comprising I2 and Et3SiH promotes intramolecular hydroalkoxylation/reduction and hydroamination/reduction of unactivated alkynes. This system allows the reaction to proceed at room temperature affording 2,4- and 2,5-disubstituted pyrrolidines as well as a 2,3-disubstituted tetrahydrofuran with high diastereoselectivity.

2, 4-Ionene Supported Permanganate: A Novel, Efficient and Selective Solid Phase Oxidizing Agent for Oxidation of Organic Compounds

2011 ◽  
Vol 14 (2) ◽  
Author(s):  
Moslem Mansour Lakouraj ◽  
Sayed Maysam Hossaini ◽  
Vahid Hasantabar ◽  
Masoomeh Soleimani
Keyword(s):  
Aqueous Solution ◽  
Organic Compounds ◽  
Carbonyl Compounds ◽  
Room Temperature ◽  
Solid Phase ◽  
Oxidizing Agent ◽  
Solvent Free Conditions ◽  
Oxidation Of Organic Compounds ◽  
Different Types ◽  
Hydroxyl Compounds

Abstract2, 4-ionene supported permanganate is easily prepared by treatment of 2, 4-ionene with an aqueous solution of potassium permanganate. This reagent could be used as a stable, mild and efficient oxidizing agent to produce carbonyl compounds from hydroxyl compounds or arenes, and disulfides from thiols in either heterogonous or solvent free conditions. In addition, aromatization of different types of 2-arylimidazolines and 2-alkylimidazolines to corresponding imidazoles was achieved in good yields in acetonitrile at room temperature.

[bmim]PF6/KOH: A Recyclable Catalytic System for an Azide–Arylacetaldehyde [3 + 2] Cycloaddition

2017 ◽  
Vol 41 (11) ◽  
pp. 631-635
Author(s):  
Yuqin Jiang ◽  
Kai Wu ◽  
Xuxia Tan ◽  
Dandan Zhang ◽  
Wenpei Dong ◽  
...  
Keyword(s):  
Transition Metal ◽  
Organic Solvent ◽  
Catalytic System ◽  
Room Temperature ◽  
Reaction Medium ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Green Protocol ◽  
Mild Conditions

A fast and green protocol for the synthesis of 1,4-disubstituted 1,2,3-triazoles from azides and arylacetaldehydes at room temperature was developed using [bmim]PF6/KOH as the reaction medium. It was found that the in situ-generated carbene from [bmim]PF6/KOH acted as the catalyst. In the absence of a transition-metal catalyst and organic solvent, this azide–arylacetaldehyde [3 + 2] cycloaddition proceeds efficiently, with high levels of regioselectivity, broad range of substrates, excellent yields and simple operation under mild conditions.

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