scholarly journals The mechanochemical synthesis of quinazolin-4(3H)-ones by controlling the reactivity of IBX

2018 ◽  
Vol 14 ◽  
pp. 2396-2403 ◽  
Author(s):  
Md Toufique Alam ◽  
Saikat Maiti ◽  
Prasenjit Mal
Keyword(s):  
Chemical Reactions ◽  
Mechanochemical Synthesis ◽  
Exothermic Reaction ◽  
Amide Group ◽  
Solvent Free ◽  
Hypervalent Iodine ◽  
Maximum Contact

Performing any synthesis using several arylamines and hypervalent iodine(V) reagents by direct mixing is unrealistic because of the high exothermic reaction or explosion. Herein we demonstrate, when anilines were substituted with an amide group at the ortho-position, successful chemical reactions could be performed due to intramolecular control. At maximum contact of the reacting substances, i.e., under solvent-free mechanochemical conditions, 2-aminobenzamides, aryl-, alkylaldehydes and the iodine(V) reagent o-iodoxybenzoic acid (IBX) led to substituted quinazolin-4(3H)-one derivatives in fair yields.

scholarly journals Mechanochemical synthesis of poly(trimethylene carbonate)s: an example of rate acceleration

2019 ◽  
Vol 15 ◽  
pp. 963-970 ◽  
Author(s):  
Sora Park ◽  
Jeung Gon Kim
Keyword(s):  
Ball Milling ◽  
Mechanochemical Synthesis ◽  
Polymeric Materials ◽  
Solvent Free ◽  
Energy Output ◽  
Polymerization Temperature ◽  
Mechanical Degradation ◽  
Trimethylene Carbonate ◽  
Rate Acceleration ◽  
Conventional Solution

Mechanochemical polymerization is a rapidly growing area and a number of polymeric materials can now be obtained through green mechanochemical synthesis. In addition to the general merits of mechanochemistry, such as being solvent-free and resulting in high conversions, we herein explore rate acceleration under ball-milling conditions while the conventional solution-state synthesis suffer from low reactivity. The solvent-free mechanochemical polymerization of trimethylene carbonate using the organocatalysts 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) are examined herein. The polymerizations under ball-milling conditions exhibited significant rate enhancements compared to polymerizations in solution. A number of milling parameters were evaluated for the ball-milling polymerization. Temperature increases due to ball collisions and exothermic energy output did not affect the polymerization rate significantly and the initial mixing speed was important for chain-length control. Liquid-assisted grinding was applied for the synthesis of high molecular weight polymers, but it failed to protect the polymer chain from mechanical degradation.

Solvent-free mechanochemical synthesis of well-dispersed single crystalline zinc hydroxystannate and their photocatalytic properties

CrystEngComm ◽  
2012 ◽  
Vol 14 (8) ◽  
pp. 2950 ◽  
Author(s):  
Ming Wang ◽  
Xueli Cao ◽  
Yunfang Huang ◽  
Chongshen Guo ◽  
Lijun Huang ◽  
...  
Keyword(s):  
Mechanochemical Synthesis ◽  
Solvent Free ◽  
Photocatalytic Properties ◽  
Single Crystalline ◽  
Zinc Hydroxystannate

An analytical model for mechanochemical reaction kinetics

2021 ◽  
Author(s):  
Maria Carta ◽  
Francesco Delogu ◽  
Andrea Porcheddu
Keyword(s):  
Reaction Kinetics ◽  
Analytical Model ◽  
Chemical Reactions ◽  
Solvent Free ◽  
Mechanochemical Reaction ◽  
Synthetic Routes ◽  
Chemical Products

With its ability to enable solvent-free chemical reactions, mechanochemistry promises to open new and greener synthetic routes to chemical products of industrial interest. Its practical exploitation requires understanding the relationships...

The solvent-free mechanochemical synthesis of mildly oxidized graphene oxide and its application as a novel conductive surfactant

2019 ◽  
Vol 43 (18) ◽  
pp. 7057-7064 ◽  
Author(s):  
Jianhui Chen ◽  
Wufeng Chen ◽  
Dongcheng Song ◽  
Bin Lai ◽  
Yuanyuan Sheng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Mechanochemical Synthesis ◽  
Solvent Free ◽  
Electrically Conductive

A solvent-free mechanochemical synthetic mildly oxidized graphene oxide (MOGO) can act as an electrically conductive surfactant for dispersing nanoparticles.

scholarly journals Mechanochemical synthesis of inorganic halide perovskites: evolution of phase-purity, morphology, and photoluminescence

2019 ◽  
Vol 7 (37) ◽  
pp. 11406-11410 ◽  
Author(s):  
Francisco Palazon ◽  
Yousra El Ajjouri ◽  
Paz Sebastia-Luna ◽  
Simone Lauciello ◽  
Liberato Manna ◽  
...  
Keyword(s):  
Ball Milling ◽  
Mechanochemical Synthesis ◽  
Solvent Free ◽  
Phase Purity ◽  
Phase Pure ◽  
Halide Perovskites

Solvent-free mechanochemical synthesis of phase-pure inorganic halide perovskites is investigated in depth revealing several beneficial and detrimental effects of ball-milling.

Rapid mechanochemical synthesis of metal–organic frameworks using exogenous organic base

2020 ◽  
Vol 49 (45) ◽  
pp. 16238-16244 ◽  
Author(s):  
Zihao Wang ◽  
Zongzhe Li ◽  
Marcus Ng ◽  
Phillip J. Milner
Keyword(s):  
Mechanochemical Synthesis ◽  
Metal Organic Frameworks ◽  
Solvent Free ◽  
Organic Base ◽  
Metal Organic ◽  
First Time ◽  
Solvent Free Synthesis

We describe the mechanochemical, solvent-free synthesis of metal–organic frameworks using liquid organic base for the first time.

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