1
|
Nguyen PD, Chau TK, Le MQ, Nguyen MT, Nguyen AT, Nguyen TT. Cobalt ferrite nanoparticles for annulation of C3-substituted nitroarenes and aryl isothiocyanates. Org Biomol Chem 2024; 22:5296-5300. [PMID: 38896038 DOI: 10.1039/d4ob00789a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
The synthesis of medicinally relevant N-aryl-substituted 2-aminobenzothiazoles often uses 2-aminothiophenol derivatives, which are not commercially abundant, as starting materials. Herein, we report a method for the annulation of C3-substituted nitroarenes and aryl isothiocyanates towards the synthesis of 2-aminobenzothiazoles. Reactions proceeded in the presence of cobalt ferrite nanoparticles as a catalyst, DABCO as a base, and DMF as a promoter. The cobalt ferrite nanoparticles could be recovered after each run and reused up to 3 times while the product yield was not diminished. Our method appears to be the first example of the direct use of substituted nitroarenes for yielding 2-aminobenzothiazoles.
Collapse
Affiliation(s)
- Phong D Nguyen
- VNU-HCM Key Laboratory of Functional Organic Materials, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Truong K Chau
- VNU-HCM Key Laboratory of Functional Organic Materials, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Mai Q Le
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| | - Manh T Nguyen
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| | - Anh T Nguyen
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| | - Tung T Nguyen
- VNU-HCM Key Laboratory of Functional Organic Materials, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| |
Collapse
|
2
|
Farajpour B, Alizadeh GB, Majedi S, Moradkhani F, Majedi S, Notash B, Hosseindoust B, Shiri M. Sulfur- and DABCO-Promoted Reaction between Alkylidene Rhodanines and Isothiocyanates: Access to Aminoalkylidene Rhodanines. ACS OMEGA 2024; 9:26607-26615. [PMID: 38911738 PMCID: PMC11191098 DOI: 10.1021/acsomega.4c03341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/16/2024] [Accepted: 05/23/2024] [Indexed: 06/25/2024]
Abstract
In this work, an efficient sulfur- and DABCO-promoted reaction for the synthesis of aminoalkylidene rhodanines from available alkylidene rhodanines and isothiocyanates is reported. A tandem process including sulfurative annulation/ring-opening by liberation of a CS2 molecule/olefination allows the synthesis of aminoalkylidene rhodanines with acceptable functional group tolerance. Chemo- and stereoselectivity, operational simplicity, and synthetically useful yields are some highlighted advantages of these transformations.
Collapse
Affiliation(s)
- Behnaz Farajpour
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Gul Bahar Alizadeh
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Soma Majedi
- Medical
Analysis Department, Applied Science Faculty, Tishk International University, Kurdistan Region 46001, Iraq
| | - Fatemeh Moradkhani
- Department
of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences
Research Center, Tehran University of Medical
Sciences, Tehran P94V+8MF, Iran
| | - Serveh Majedi
- Department
of Chemistry, Payame Noor University, Tehran RG23+F4X, Iran
| | - Behrouz Notash
- Department
of Inorganic Chemistry, Shahid Beheshti
University, Tehran 1983969411, Iran
| | - Benyamin Hosseindoust
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Morteza Shiri
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| |
Collapse
|
3
|
Huynh TN, Ong KTN, Dinh PT, Nguyen AT, Nguyen TT. Elemental Sulfur Promoted Cyclization of Aryl Hydrazones and Aryl Isothiocyanates Yielding 2-Imino-1,3,4-thiadiazoles. J Org Chem 2024; 89:3202-3210. [PMID: 38329896 DOI: 10.1021/acs.joc.3c02675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
We report a method for using elemental sulfur to facilitate the cyclization of aryl hydrazones and aryl isothiocyanates, affording biorelated 2-imino-1,3,4-thiadiazoles. Reactions progressed in the presence of elemental sulfur, N-methylmorpholine base, and DMSO solvent, while were tolerant of a wide range of functionalities including halogen, nitro, cyano, methylsulfonyl, and heterocyclic groups. The method appears to offer a general pathway for using simple, cheap, and stable reagents to afford triaryl-substituted 2-imino-1,3,4-thiadiazoles under relatively mild conditions.
Collapse
Affiliation(s)
- Tan N Huynh
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 84, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
| | - Khanh T N Ong
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
- VNU-HCM Key Laboratory for Functional Organic Materials, Ho Chi Minh City 84, Vietnam
| | - Phuong T Dinh
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
- VNU-HCM Key Laboratory for Functional Organic Materials, Ho Chi Minh City 84, Vietnam
| | - Anh T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 84, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
| | - Tung T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 84, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
- VNU-HCM Key Laboratory for Functional Organic Materials, Ho Chi Minh City 84, Vietnam
| |
Collapse
|