reaction condition
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2022 ◽  
Author(s):  
Yasuyuki Yamada ◽  
Chee-Ming Teoh ◽  
Yuka Toyoda ◽  
Kentaro Tanaka

Direct catalytic hydroxylation of benzene under mild reaction conditions proceeded efficiently in the presence of a monocationic μ-nitrido-bridged iron phthalocyanine dimer with 16 peripheral methyl groups in an acetonitrile solution...


2021 ◽  
Author(s):  
Jianguo liu ◽  
Xiuzhi Wei ◽  
Longlong Ma

We herein describe a facile synthesis method of novel NH2-MIL-125 (Ti) metal organic framework as a photocatalyst, and the photochemical system was firstly developed for the direct N-methylation of amines under very mild reaction conditions of one bar CO2 and NaBH4. According to the optimization of reaction conditions, the selective synthesis of methylamines is achieved in good to excellent conversion and selectivity using visible light mediated photocatalytic system.


2021 ◽  
Author(s):  
SUDERSHAN GONDI

Trithiocarbonate TTC, Dithioester DT containing RAFT chain transfer acid agents are efficiently and conveniently esterified by DBU. The significance of the reaction is mild reaction condition, high yield, easy simple workup, and reduction of reaction time. This protocol providing a useful alternative method for ester synthesis and makes the process very viable or more economic.


2021 ◽  
Author(s):  
Jay Soni ◽  
Pankaj Teli ◽  
Nusrat Sahiba ◽  
Ayushi Sethiya ◽  
Shikha Agarwal

Oxidation of alkenes is an important reaction in academia, industry and science as it is used to develop epoxides, carbonyls, allylic compounds, 1,2-diols, etc. Metal catalyzed oxidation of alkenes has aroused as a significant tool in modern organic synthesis. Several techniques are available; however some of them suffer from few shortcomings viz. high cost, toxic nature, harsh reaction condition, solid waste generation, etc. In view of these drawbacks, green oxidants i.e. O2, H2O2, TBHP, etc. have shown noteworthy prospects due to their nature, low cost, high atom economy and high sustainability in metal catalyzed reactions. This chapter highlights the metal catalyzed green oxidation of alkenes and shall provide new strategies for the functionalization and transformation of alkenes.


Synthesis ◽  
2021 ◽  
Author(s):  
Di Ke ◽  
You Wu ◽  
Lei Zhang ◽  
Jiaan Shao ◽  
Yongping Yu ◽  
...  

A group-assisted-purification (GAP) chemistry strategy based Ugi four-center three-component reaction (Ugi-4C-3CR) was explored. The reaction proceeded well to deliver the cyclic fused pyridinones selectively. Moreover, the reaction condition was mild and avoided additional chromatography or recrystallization work-up. Also, wide variations in substrates, such as anilines and aliphatic amines as well as amino alcohols and amino acid esters were all tolerated and achieved in good to excellent yields. Importantly, ladder-type cyclic fused pyridinones can be further constructed with excellent yield of 91%.


2021 ◽  
pp. 1-9
Author(s):  
Srinivasulu Chinthaginjala ◽  
Nanda H. Alavandimat ◽  
Vathsala Umesha ◽  
Vommina V. Sureshbabu
Keyword(s):  

2021 ◽  
Vol 08 ◽  
Author(s):  
Bijeta Mitra ◽  
Pranab Ghosh

: In recent times, microwave assisted chemistry have gained enormous attraction in organic synthesis owing to its versatile advantages such as avoidance of harsh reaction condition, increase of yield, eliminates of by product, shorter reaction time and removal of wastages. Besides, water as a reaction medium further includes more benefit as it eliminates all the drawbacks of toxic solvent which may cause injuries for our mother earth. Furthermore C-C and C-heteroatom bond formation reactions are very significant as most of the drug as well as bioactive compounds contain heterocycles or C-hetero bond which is a key tool of chemistry. This article demonstrates the advancement on the topic of the microwave assisted C-C and C-heteroatom bond formation reactions in aqueous medium.


Photochem ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 147-166
Author(s):  
Alessio Zuliani ◽  
Camilla Maria Cova

The exploitation of visible-light active photocatalytic materials can potentially change the supply of energy and deeply transform our world, giving access to a carbon neutral society. Currently, most photocatalysts are produced through low-ecofriendly, energy dispersive, and fossil-based synthesis. Over the last few years, research has focused on the development of innovative heterogeneous photocatalysts by the design of sustainable and green synthetic approaches. These strategies range from the use of plant extracts, to the valorization and recycling of metals inside industrial sludges or from the use of solventless techniques to the elaboration of mild-reaction condition synthetic tools. This mini-review highlights progresses in the development of visible-light-active heterogeneous photocatalysts based on two different approaches: the design of sustainable synthetic methodologies and the use of biomass and waste as sources of chemicals embedded in the final photoactive materials.


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