A non-heme cationic Fe(iii)-complex intercalated in montmorillonite K-10: synthesis, characterization and catalytic alkane hydroxylation with H2O2 at room temperature

2014 ◽  
Vol 4 (9) ◽  
pp. 3180-3185 ◽  
Author(s):  
Anand Pariyar ◽  
Suranjana Bose ◽  
Achintesh Narayan Biswas ◽  
Sudip Barman ◽  
Pinaki Bandyopadhyay
Keyword(s):  
Room Temperature ◽  
Heme Iron ◽  
Environmentally Benign ◽  
Efficient Catalyst ◽  
Non Heme Iron ◽  
Alkane Hydroxylation ◽  
Selective Hydroxylation

An efficient catalyst for highly selective hydroxylation of alkanes with environmentally benign H2O2 at room temperature has been designed by the intercalation of a non-heme iron(iii) complex into smectite montmorillonite K-10.

Envirocat EPZ-10: An Efficient Catalyst for the Synthesis of 1,2,4- Triazolidine-3-thiones

2020 ◽  
Vol 17 (4) ◽  
pp. 321-326
Author(s):  
Pradeep M. Mhaldar ◽  
Dattaprasad M. Pore
Keyword(s):  
Present Method ◽  
Room Temperature ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Environmentally Benign ◽  
Temperature Synthesis ◽  
Efficient Catalyst ◽  
Green Catalyst ◽  
Catalyst Reusability

A simple and environmentally benign room temperature synthesis of 1,2,4-triazolidine-3- thiones is described using Envirocat EPZ-10R as a solid acid catalyst in the aqueous medium. The use of Envirocat EPZ-10R as a green catalyst, reusability of the catalyst, water as a universal solvent and good yields of the product are the attractive features of the present method.

scholarly journals Mechanistic elucidation of C–H oxidation by electron rich non-heme iron(iv)–oxo at room temperature

2015 ◽  
Vol 51 (77) ◽  
pp. 14469-14472 ◽  
Author(s):  
Sujoy Rana ◽  
Aniruddha Dey ◽  
Debabrata Maiti
Keyword(s):  
Hydrogen Atom ◽  
Room Temperature ◽  
Heme Iron ◽  
Hydrogen Atom Abstraction ◽  
Non Heme Iron

Non-heme iron(iv)–oxo species form iron(iii) intermediates during hydrogen atom abstraction (HAA) from the C–H bond.

scholarly journals Regio‐selective alkane hydroxylation by the isolated membrane‐bound non‐heme iron oxygenase, AlkB

2013 ◽  
Vol 27 (S1) ◽  
Author(s):  
Wen‐I Luo ◽  
Chun‐Wei Chang ◽  
Ravirala Ramu ◽  
Yi‐Fang Tsai ◽  
Kok Yaoh Ng ◽  
...  
Keyword(s):  
Heme Iron ◽  
Non Heme Iron ◽  
Alkane Hydroxylation ◽  
Membrane Bound

MoO3 Nanoparticles as an Efficient Catalyst for the Synthesis of Pyrazoles in Aqueous-alcoholic Medium at Room Temperature

2020 ◽  
Vol 17 (9) ◽  
pp. 694-703
Author(s):  
Sonatai Patil ◽  
Ananda Mane ◽  
Savita Dhongade-Desai
Keyword(s):  
Present Method ◽  
Room Temperature ◽  
Reaction Medium ◽  
Product Yield ◽  
Environmentally Benign ◽  
Efficient Catalyst ◽  
Dicarbonyl Compound ◽  
Alcoholic Medium ◽  
Disastrous Effect ◽  
Substituted Pyrazoles

We have successfully explored the potential MoO3 nanoparticles as a heterogeneous catalyst for the cyclocondensation of hydrazines/hydrazides with 1,3-dicarbonyl compound in aqueousalcoholic medium at room temperature. The present method has been developed using green chemistry measures and offers a range of N-substituted pyrazoles with moderate to excellent yields. Utilization of non-toxic catalyst, wide substrate scope and environmentally benign reaction medium are the important features of the developed protocol. Interestingly, MoO3 nanocatalyst can easily be recovered from the reaction mixture and showed excellent reusability with a modest change in product yield. We have reported herein the synthetic pathway with less disastrous effect in the atmosphere.

Iron (III) chloride hexahydrate as a highly efficient catalyst for acetylation of protic nucleophiles with acetic anhydride under solvent-free conditions

2020 ◽  
Vol 07 ◽  
Author(s):  
Naoures Jamel Eddine ◽  
Fayçal Jennen ◽  
Yakdhane Kacem ◽  
Jamil Kraiem
Keyword(s):  
Acetic Anhydride ◽  
Room Temperature ◽  
Catalytic Amount ◽  
Solvent Free ◽  
Environmentally Benign ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Chloride Hexahydrate ◽  
New Methodologies

Background: Acetylation of protic nucleophiles is used to protect these functional groups. Most of the methods described in the literature use solvents, one equivalent or more of toxic bases or expensive and toxic catalysts. Therefore, new methodologies are still in demand, above all, greener and more economical procedures. Objective: An eco-efficient method developed for acetylation of alcohols, phenols, thiols, amines and carbohydrates, using acetic anhydride and a catalytic amount of the environmentally benign and inexpensive FeCl3.6H2O under solvent free conditions. Methods: Acetylation of a variety of protic nucleophiles was performed using 0.2 mol % of FeCl3.6H2O as the catalyst, and 1.2 equiv. as the acetylating agent at room temperature and under solvent free conditions. Results: Our procedure appears to be highly efficient and promoted rapid and quantitative acetylation under simple and minimum manipulation. Chromatography or recrystallization were generally not necessary for the purification of products. Conclusion: This eco-friendly protocol appears to be potentially universally applicable in organic design to protect protic nucleophiles and potentially scalable for industrial fields.

Two-State Reactivity in Alkane Hydroxylation by Non-Heme Iron−Oxo Complexes

2006 ◽  
Vol 128 (26) ◽  
pp. 8590-8606 ◽  
Author(s):  
Hajime Hirao ◽  
Devesh Kumar ◽  
Lawrence Que ◽  
Sason Shaik
Keyword(s):  
Heme Iron ◽  
Oxo Complexes ◽  
Non Heme Iron ◽  
Alkane Hydroxylation
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