scholarly journals Wavelength selective photoactivated autocatalytic oxidation of 5,12-dihydrobenzo[b]phenazine and its application in metal-free synthesis

RSC Advances ◽  
2020 ◽  
Vol 10 (17) ◽  
pp. 9949-9954
Author(s):  
Lei Bian ◽  
Jie Ma ◽  
Xiaotong Feng ◽  
Yuanhang Wang ◽  
Lizhi Zhao ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Metal Impurity ◽  
Metal Free ◽  
Autocatalytic Oxidation

We describe the photoactivated autocatalytic oxidation of 5,12-dihydrobenzo[b]phenazine to benzo[b]phenazine with oxygen from the air as the oxidant and develop a green synthesis way of metal impurity-free BP or other similar products.

Green synthesis of benzoimidazopyrimidine, benzimidazoloquinazolinone, triazolopyrimidine and triazoloquinazolinone derivatives catalyzed by oxalic acid dihydrate

2021 ◽  
Vol 18 ◽  
Author(s):  
Seyed Sajad Sajadikhah ◽  
Bagher Liravi-Deylami
Keyword(s):  
Oxalic Acid ◽  
Green Synthesis ◽  
Column Chromatography ◽  
Catalytic Amount ◽  
Atom Economy ◽  
One Pot ◽  
Oxalic Acid Dihydrate ◽  
Metal Free ◽  
Solvent Free Conditions ◽  
Simple Filtration

: Benzoimidazopyrimidine, benzimidazoloquinazolinone, triazolopyrimidine, and triazoloquinazolinone derivatives were synthesized via a one-pot multi-component reaction in the presence of a catalytic amount of oxalic acid dihydrate. The reactions were performed in the mixture of EtOH: H2O or under solvent-free conditions as green media. The advantageous features of these methodologies are inexpensive starting materials and catalyst, high atom economy and good yields, and metal-free synthesis. Moreover, all the products were obtained by simple filtration with no need for column chromatography or tedious separation procedures, which is very important in terms of reducing environmental pollutions.

Green synthesis of diaryl selenides from arylboronic acids and arylseleninic acids.

Synlett ◽  
2022 ◽  
Author(s):  
Sebastien Redon ◽  
Vincent Remusat ◽  
Patrice Vanelle
Keyword(s):  
Green Synthesis ◽  
Environmentally Friendly ◽  
Present Approach ◽  
New Method ◽  
Free Base ◽  
Metal Free ◽  
Arylboronic Acids

A new method of deborylative selanylation using arylboronic acids and arylseleninic acids gave diaryl selenoethers and diarylselenoxide. The present approach requires only equimolar arylseleninic acid and led selectively to selenoethers or selenoxides depending on the solvent. The method is metal-free, base- or oxidant-free, efficient, and environmentally friendly.

Photocatalytic green synthesis of benzazoles from alcohol oxidation/toluene sp3 C-H activation over metal-free BCN: effect of crystallinity and N-B pairs exposure

2021 ◽  
Author(s):  
Heyan Jiang ◽  
Cuicui Zang ◽  
Hongmei Cheng ◽  
BIn Sun ◽  
Xue Gao
Keyword(s):  
Green Synthesis ◽  
Molten Salt ◽  
Alcohol Oxidation ◽  
Metal Free ◽  
Tandem Synthesis ◽  
Enhanced Crystallinity

Porous borocarbonitride (P-BCN), with characteristics of enhanced crystallinity and improved N-B pairs exposure, were prepared with simple KCl-assisted molten salt strategy. Efficient heterogeneous photocatalytic tandem synthesis of benzazoles from alcohol...

scholarly journals Empowering Transition-Metal-Free Cascade Protocol for the Green Synthesis of Biaryls and Alkynes

ACS Omega ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 1983-1990 ◽  
Author(s):  
Preet Kamal Walia ◽  
Manoj Kumar ◽  
Vandana Bhalla
Keyword(s):  
Transition Metal ◽  
Green Synthesis ◽  
Metal Free

The application of spatially restricted geometries as a unique route to produce well-defined poly(vinyl pyrrolidones) via free radical polymerisation

2019 ◽  
Vol 55 (45) ◽  
pp. 6441-6444 ◽  
Author(s):  
Magdalena Tarnacka ◽  
Paulina Maksym ◽  
Andrzej Zięba ◽  
Anna Mielańczyk ◽  
Monika Geppert-Rybczyńska ◽  
...  
Keyword(s):  
Free Radical ◽  
Green Synthesis ◽  
Vinyl Pyrrolidone ◽  
Metal Free ◽  
Radical Polymerisation ◽  
Linear Poly ◽  
Poly Vinyl Pyrrolidone

We report the metal-free green synthesis of linear poly(vinyl pyrrolidone) of well-defined properties via free-radical polymerisation performed under confinement.

Room-Temperature Activation of Molecular Oxygen Over a Metal-Free Triazine-Decorated sp2 -Carbon Framework for Green Synthesis

ChemCatChem ◽  
2018 ◽  
Vol 10 (22) ◽  
pp. 5331-5335 ◽  
Author(s):  
Li-Bing Lv ◽  
Shi-Ze Yang ◽  
Wei-Jie Feng ◽  
Wen-Yu Ke ◽  
Bing Zhang ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Molecular Oxygen ◽  
Room Temperature ◽  
Metal Free ◽  
Carbon Framework ◽  
Temperature Activation
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