C18‐DABCO‐AA: A Novel Brønsted Acidic Gemini Surfactant for the Environmental Benign Synthesis of 2,3‑Dihydroquinazolin‑4(1H)‑ones in Water at Ambient Temperature DOI

Vijaya S. Rajmane,

Sunita Shirke,

Omkar Sutar

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(43)

Опубликована: Ноя. 1, 2024

Abstract We have successfully synthesized a new acidic surfactant named C 18 ‐DABCO‐AA, which contains octadecyl and acetic acid substituent on DABCO (1,4‐diazabicyclo [2.2.2] octane) unit, with an excellent yield. The was analyzed using FT‐IR, 1 H NMR, 13 NMR spectroscopic techniques. Its thermal behavior by the TGA–DTA technique. Our analysis indicates that has properties. critical micelle concentration (CMC) is 0.80 mM as determined conductivity method UV–vis absorption measurement at 298.15 K. Surfactant also showed strong properties p K of 3.3. It best catalyst for synthesis 2,3‑dihydroquinazolin‑4(1 )‐ones (DHQs) in water 40 °C. achieved via two‐component reactions various aromatic aldehydes anthranilamide CMC ‐DABCO‐AA. extended synthesizing DHQs different ketones under similar reaction conditions. products were yields ranging from good to within 60–90 min. Additionally, aqueous solution ‐DABCO‐AA reused up five times minor decrease product present protocol fast, energy‐efficient, can be used large scale synthetic purposes. it boasts impressive environmentally friendly credentials.

Язык: Английский

l-Aspartic acid-functionalized magnetic nanoparticles: as a new magnetically reusable bifunctional acid–base catalysts for the synthesis of benzo[b]pyran and pyrano[3,2–c] chromene derivatives DOI Creative Commons
Leila Amiri‐Zirtol,

Hanieh Mostashfi,

Razieh Sabet

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 2, 2025

Язык: Английский

Процитировано

2
DABCO dicationic ionic solid supported polymer (DDIS@PS) mediated synthesis of diverse 2-amino-4H-chromenes and xanthenes: a cascade Knoevenagel–Michael approach DOI

Archana Rajmane,

Nita Patil, Amit Patil

и другие.

New Journal of Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This work documented the synthesis of diverse bioactive polysubstituted 2-amino-4 H -chromenes using a DABCO dicationic ionic solid (DDIS) supported on Merrifield resin (DDIS@PS) as catalyst.

Язык: Английский

Процитировано

0
Solid‐state Suzuki–Miyaura cross‐coupling: A sustainable approach by DDIL‐stabilized magnetic separable and recyclable Pd nanoparticles with total solvent bypass DOI

Kiran S. Bagade,

Dipti D. Jadhav,

Arjun Kumbhar

и другие.

Applied Organometallic Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Июнь 9, 2024

A new method for the sustainable synthesis of various functionalized biaryls through solid‐state Suzuki–Miyaura cross‐coupling reaction has been developed. This protocol employs a palladium catalyst anchored on diazabicyclo[2.2.2]octane silica ferrite composite (Pd‐DDIL@Fe 3 O 4 ‐SiO 2 ). The fully characterized using multiple techniques such as FTIR, XRD, FESEM, EDS, elemental mapping, HR‐TEM, XPS, BET, TGA‐DTA, and VSM. Pd‐DDIL@Fe surface area 60.17 m g −1 magnetization saturation 40.95 emu . TEM analysis revealed rough spherical morphology PdNPs having particle size 7 nm. excellent activity selectivity towards both symmetrical unsymmetrical under solid‐state, solvent‐free grinding conditions mortar pestle. is eco‐friendly, it performed at room temperature without any solvents. yield products (90–96%) in short time (3–20 min). desired are isolated easily use organic can be separated an external magnet reused least six times with admirable change yield. Additionally, catalytic system shown to have high TON TOF, thus confirming its sustainability.

Язык: Английский

Процитировано

2
Silica-Supported Bi2O3-Cr2O3 Nanocomposite: Efficient Catalyst for Pyrano[3,2-c]chromenes Synthesis and DFT Studies DOI

Mueataz G. Thabet,

M. Aslam, Prashant Singh

и другие.

Journal of Molecular Structure, Год журнала: 2024, Номер 1319, С. 139624 - 139624

Опубликована: Авг. 13, 2024

Язык: Английский

Процитировано

2
Pd(OAc)2/[C18–DABCO–C18]2Br: a nano palladium catalytic approach for Mizoroki–Heck and Suzuki–Miyaura coupling reactions in water DOI

Archana Rajmane,

Chunilal B. Pawara,

Sumit B. Kamble

и другие.

New Journal of Chemistry, Год журнала: 2023, Номер 47(43), С. 20171 - 20181

Опубликована: Янв. 1, 2023

In this study, we have successfully used a new catalytic system comprised of Pd(OAc) 2 and [C 18 –DABCO–C ]2Br (at ratio 1 : 10 mol%) for various types C–C coupling reactions, including Mizoroki–Heck Suzuki–Miyaura, in water-based medium.

Язык: Английский

Процитировано

5
In Situ generated PdNPs immobilized on Polystyrene Supported DABCO Dicationic Ionic Liquid: An Efficient and Reusable Catalyst for Suzuki and Heck Coupling Reactions DOI

Archana Rajmane,

Jasbir Kaur Mahey,

Sumit B. Kamble

и другие.

Journal of Organometallic Chemistry, Год журнала: 2024, Номер unknown, С. 123390 - 123390

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

1
ZrO2 Supported Cu Nanoparticles for Sonogashira and Ullmann Coupling Reactions Under Palladium-Free Conditions DOI

Seema P. Patil,

Archana Rajmane,

Sanjay Jadhav

и другие.

Catalysis Letters, Год журнала: 2023, Номер 154(6), С. 3078 - 3090

Опубликована: Дек. 14, 2023

Язык: Английский

Процитировано

2
Brønsted Acid Saponin Combined Catalyst (BASapC) for the Synthesis of Diverse 1,1‐Dihomoarylmethane Scaffolds in Aqueous Solution DOI

Shubhangi Nirmale,

K. C. Patil,

Arjun Kumbhar

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(42)

Опубликована: Ноя. 1, 2024

Abstract The present study describes the synthesis of various bioactive compounds, including bis‐coumarins, bis‐lawsones, bis‐dimedones, and bis‐indolylmethanes, using a novel catalytic system called “Brønsted acid saponin combined catalyst” (BASapC). BASapC was formed by combining p ‐toluenesulfonic (PTSA) in an aqueous medium. prepared proved to be effective facilitating cascade‐type Knoevenagel–Michael addition reactions between aromatic aldehydes with 4‐hydroxycoumarin, lawsone, dimedone, or indole at 80 °C. In system, PTSA acted as powerful Brønsted acid, activating reactants, whereas served natural surfactant, enhancing solubility organic compounds water. This approach established straightforwardness robustness diversity‐oriented (DoS), delivering desired products good excellent yields. Additionally, exhibited recyclability for least four cycles without significant loss activity.

Язык: Английский

Процитировано

0
C18‐DABCO‐AA: A Novel Brønsted Acidic Gemini Surfactant for the Environmental Benign Synthesis of 2,3‑Dihydroquinazolin‑4(1H)‑ones in Water at Ambient Temperature DOI

Vijaya S. Rajmane,

Sunita Shirke,

Omkar Sutar

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(43)

Опубликована: Ноя. 1, 2024

Abstract We have successfully synthesized a new acidic surfactant named C 18 ‐DABCO‐AA, which contains octadecyl and acetic acid substituent on DABCO (1,4‐diazabicyclo [2.2.2] octane) unit, with an excellent yield. The was analyzed using FT‐IR, 1 H NMR, 13 NMR spectroscopic techniques. Its thermal behavior by the TGA–DTA technique. Our analysis indicates that has properties. critical micelle concentration (CMC) is 0.80 mM as determined conductivity method UV–vis absorption measurement at 298.15 K. Surfactant also showed strong properties p K of 3.3. It best catalyst for synthesis 2,3‑dihydroquinazolin‑4(1 )‐ones (DHQs) in water 40 °C. achieved via two‐component reactions various aromatic aldehydes anthranilamide CMC ‐DABCO‐AA. extended synthesizing DHQs different ketones under similar reaction conditions. products were yields ranging from good to within 60–90 min. Additionally, aqueous solution ‐DABCO‐AA reused up five times minor decrease product present protocol fast, energy‐efficient, can be used large scale synthetic purposes. it boasts impressive environmentally friendly credentials.

Язык: Английский

Процитировано

0