* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Tuesday, August 5, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    ‘Billie Jean’ – Hyde Park Herald

    The Enduring Magic Behind ‘Billie Jean’ Revealed

    Hank Hill returns to a changed world in new ‘King of the Hill’ episodes – New Haven Register

    Hank Hill Navigates a Bold New World in Thrilling New ‘King of the Hill’ Episodes

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Go-to entertainment: why gaming was made for the toilet – The Guardian

    Why Gaming Is the Ultimate Way to Pass Time in the Bathroom

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Future Trends In HR Technology – Dataconomy

    Future Trends In HR Technology – Dataconomy

    Nasdaq-listed Verb Technology to build $558 million TON treasury, rebrand as TON Strategy Co. – The Block

    Nasdaq-Listed Verb Technology to Build $558 Million TON Treasury and Rebrand as TON Strategy Co

    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    Credo Technology: Wiring The AI Revolution (NASDAQ:CRDO) – Seeking Alpha

    Credo Technology: Driving the Next Wave of AI Innovation

    Microsoft Seeks to Extend Access to OpenAI Technology – PYMNTS.com

    Microsoft Aims to Broaden Access to OpenAI Technology

    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    ‘Billie Jean’ – Hyde Park Herald

    The Enduring Magic Behind ‘Billie Jean’ Revealed

    Hank Hill returns to a changed world in new ‘King of the Hill’ episodes – New Haven Register

    Hank Hill Navigates a Bold New World in Thrilling New ‘King of the Hill’ Episodes

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Go-to entertainment: why gaming was made for the toilet – The Guardian

    Why Gaming Is the Ultimate Way to Pass Time in the Bathroom

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Future Trends In HR Technology – Dataconomy

    Future Trends In HR Technology – Dataconomy

    Nasdaq-listed Verb Technology to build $558 million TON treasury, rebrand as TON Strategy Co. – The Block

    Nasdaq-Listed Verb Technology to Build $558 Million TON Treasury and Rebrand as TON Strategy Co

    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    Credo Technology: Wiring The AI Revolution (NASDAQ:CRDO) – Seeking Alpha

    Credo Technology: Driving the Next Wave of AI Innovation

    Microsoft Seeks to Extend Access to OpenAI Technology – PYMNTS.com

    Microsoft Aims to Broaden Access to OpenAI Technology

    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Chemical synthesis using titanium dioxide: An eco-friendly and innovative approach

January 2, 2024
in Science
Chemical synthesis using titanium dioxide: An eco-friendly and innovative approach
Share on FacebookShare on Twitter

Chemical synthesis using titanium dioxide: An eco-friendly and innovative approach

A team of researchers now present an eco-friendly and innovative approach for the blue light-promoted synthesis of heterocyclic thiochromenopyrroledione derivatives catalyzed by titanium dioxide. Credit: Professor Yutaka Hitomi, Doshisha University

Heterocyclic compounds are organic molecules with a ring structure comprising at least two or more elements. In most cases, these rings are composed of carbon atoms along with one or more other elements such as nitrogen, oxygen, or sulfur. They are highly sought after as raw materials in the chemical and pharmaceutical industry, owing to their versatility and excellent physiological activities.

While several methods are available for synthesizing these compounds, most of them involve high temperature and pressure conditions, or the use of precious metal catalysts, adding to the economic and environmental cost of producing heterocyclic organic compounds.

Now, however, a team of researchers from Japan and Bangladesh have proposed a simple yet effective method for overcoming these challenges. Their study was recently published in the journal Advanced Synthesis & Catalysis. Using the proposed strategy, the team demonstrated the synthesis of 20 sulfur-containing heterocyclic compounds in the presence of photocatalyst titanium dioxide (TiO2) and visible light.

The study was led by Professor Yutaka Hitomi from the Department of Applied Chemistry, Graduate School of Science and Engineering, Doshisha University, and co-authored by a Ph.D. candidate Pijush Kanti Roy from Doshisha University, Associate Professor Sayuri Okunaka from Tokyo City University, and Dr. Hiromasa Tokudome from Research Institute, TOTO Ltd.

TiO2 as a photocatalyst for driving organic reactions has captured the attention of synthetic chemists for a while now. However, many such processes require ultraviolet light to trigger the reaction. In this study, however, the research team found that under anaerobic conditions, sulfur-containing organic compounds like thioanisole derivatives, when hit with blue light, reacted with maleimide derivatives to form dual carbon–carbon bonds, yielding a new heterocyclic organic compound.

“We observed that while ultraviolet light generates highly oxidative holes, our approach allows for the selective one-electron oxidation of the substrate molecules using visible light. This approach can thus be employed in various organic chemical reactions,” explains Prof. Hitomi.

The researchers chose five 4-substituted thioanisoles and four N-substituted maleimides for the annulation or ring formation reactions. The team irradiated the starting material with blue light (wavelength> 420 nm) but observed no reaction. However, introducing TiO2 into the reaction system led to the synthesis of 20 different thiochromenopyrroledione derivatives with moderate-to-high yield. They found that within 12 hours of exposure to blue light, the reaction between thioanisole and N-benzylmaleimide led to the formation of a thiochromenopyrroledione derivative with 43% yield, which was close to the theoretical maximum yield of 50%.

The research team also observed substituent effect in the reactions to understand the corresponding mechanistic aspects. From the results, they postulated that the reaction proceeds through charge transfer from thioanisole to the conduction band of TiO2. Furthermore, they suggested that irradiation with blue light triggered one-electron oxidation of thioanisole, which further initiated the generation of α-thioalkyl radicals through deprotonation.

In summary, this new and refined approach demonstrates the potential of TiO2 for visible light photocatalysis for organic synthesis. It also provided crucial insights into the chemistry of complex heterocyclic compound synthesis. Moving forward, this approach can open up new possibilities for transitioning from current resource-intensive industrial chemical processes to a more energy-efficient system.

Prof. Hitomi says, “What drove our study was the desire to aid in the development of a sustainable chemical industry, and our findings appear to be a positive step in this direction.”

“We believe that the widespread adoption of this visible light-driven technology could assist in accessible and affordable synthesis of pharmaceuticals, with its profound impacts on the health and well-being of millions of people worldwide.” Thanks to the efforts of Prof. Hitomi and his team, their study has opened up new avenues in the field of organic synthesis, with the potential to revolutionize multiple chemical industries.

More information:
Pijush Kanti Roy et al, Blue Light‐Promoted Synthesis of Thiochromenopyrroledione Derivatives via Titanium Dioxide‐Catalyzed Dual Carbon–Carbon Bond Formation with Thioanisole and Maleimide Derivatives, Advanced Synthesis & Catalysis (2023). DOI: 10.1002/adsc.202301021

Citation:
Chemical synthesis using titanium dioxide: An eco-friendly and innovative approach (2024, January 1)
retrieved 2 January 2024
from https://phys.org/news/2024-01-chemical-synthesis-titanium-dioxide-eco-friendly.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2024-01-chemical-synthesis-titanium-dioxide-eco-friendly.html

Tags: ChemicalscienceSynthesis
Previous Post

Bison vs. urban growth: Rocky Mountain Arsenal seeks solutions to water runoff

Next Post

Selective conversion of CO₂ into dimethyl ether over hydrophobic and gallium-modified copper catalysts

Future Trends In HR Technology – Dataconomy

Future Trends In HR Technology – Dataconomy

August 5, 2025
Mississippi Sports Hall of Fame class of 2025 officially inducted – WLOX

Mississippi Sports Hall of Fame class of 2025 officially inducted – WLOX

August 5, 2025
Your nature photo might be a scientific breakthrough in disguise – ScienceDaily

Could Your Nature Photo Unlock the Next Big Scientific Breakthrough?

August 5, 2025
Scientists reexamine 47-year-old fossil and discover a new Jurassic sea monster – ScienceDaily

47-Year-Old Fossil Reveals an Astonishing New Jurassic Sea Monster

August 5, 2025
Moment of Science: Parker probe offers insights into sun, solar wind – WIS News 10

Parker Probe Unveils New Secrets About the Sun and Solar Wind

August 5, 2025
Nurse, marathon runner Jin Lee promotes healthy lifestyle by example – Bucks County Herald newspaper

Nurse, marathon runner Jin Lee promotes healthy lifestyle by example – Bucks County Herald newspaper

August 5, 2025
Who’s the top dog? Wave-riding canines compete in the World Dog Surfing Championships – NPR

Meet the Ultimate Wave-Riding Dogs Competing for the World Surfing Championship!

August 5, 2025
‘The Big Short’ investor warns despite economy’s stronghold against ‘thoughtless,’ ‘unprecedented’ tariffs so far, stagflation is coming – Fortune

The Big Short’ Investor Issues Stark Warning: Stagflation Threatens Despite Economy’s Surprising Strength Against Unprecedented Tariffs

August 5, 2025
‘Billie Jean’ – Hyde Park Herald

The Enduring Magic Behind ‘Billie Jean’ Revealed

August 5, 2025
Health insurance in Pennsylvania may see biggest hike in years – 90.5 WESA

Pennsylvania Braces for Its Largest Health Insurance Increase in Years

August 5, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (755)
  • Economy (780)
  • Entertainment (21,657)
  • General (16,297)
  • Health (9,817)
  • Lifestyle (788)
  • News (22,149)
  • People (779)
  • Politics (789)
  • Science (15,993)
  • Sports (21,276)
  • Technology (15,758)
  • World (761)

Recent News

Future Trends In HR Technology – Dataconomy

Future Trends In HR Technology – Dataconomy

August 5, 2025
Mississippi Sports Hall of Fame class of 2025 officially inducted – WLOX

Mississippi Sports Hall of Fame class of 2025 officially inducted – WLOX

August 5, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version