1
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Salem MA, Abu‐Hashem AA, Abdelgawad AAM, Gouda MA. Synthesis and reactivity of thieno[2,3‐
b
]quinoline derivatives (Part
II
). J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mohammed A. Salem
- Department of Chemistry, Faculty of Science and Arts King Khalid University Mohail Assir Saudi Arabia
- Department of Chemistry, Faculty of Science Al‐Azhar University Cairo Egypt
| | - Ameen A. Abu‐Hashem
- Photochemistry Department (Heterocyclic Unit) National Research Centre Giza Egypt
- Chemistry Departments, Faculty of Science Jazan University Jazan Saudi Arabia
| | - Ahmed A. M. Abdelgawad
- Chemistry Departments, Faculty of Science Jazan University Jazan Saudi Arabia
- Medicinal and Aromatic Plants Department Desert Research Center Cairo Egypt
| | - Moustafa A. Gouda
- Department of Chemistry, Faculty of Science and Arts Taibah University, Ulla Medina Saudi Arabia
- Department of Chemistry Faculty of Science, Mansoura University, Mansoura Egypt
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2
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Bhattacharya A, Thirupathi A, Natarajan P, Peruncheralathan S. Chemoselective Ullmann Reaction of α-Trisubstituted Thioamides: Synthesis of Novel 2-Iminobenzothiolanes. ACS OMEGA 2021; 6:21169-21180. [PMID: 34423225 PMCID: PMC8375098 DOI: 10.1021/acsomega.1c03410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
New classes of unexplored benzo[b]thiolanes are synthesized from trisubstituted thioamides through copper-catalyzed intramolecular S-arylation of thioamides for the first time. This method provides good to excellent yields with fully controlled chemoselectivity. Unusually, iminobenzo[b]thiolanes are very stable under mild acidic conditions. A plausible mechanism is proposed for the chemoselective S-arylation process.
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3
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Kumar Y, Ila H. Synthesis of Substituted Benzo[b]thiophenes via Base-Promoted Domino Condensation–Intramolecular C–S Bond Formation. Org Lett 2021; 23:1698-1702. [DOI: 10.1021/acs.orglett.1c00085] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yogendra Kumar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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4
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Ejaz S, Zubair M, Rizwan K, Karakaya I, Rasheed T, Rasool N. An Updated Coverage on the Synthesis of Benzo[b]thiophenes via Transition-metalcatalyzed Reactions: A Review. CURR ORG CHEM 2021. [DOI: 10.2174/1385272824999201111204317] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The benzo[b]thiophene nucleus is ubiquitous in biologically and pharmaceutically
important compounds. These moieties are highly important in materials science. The synthesis
of benzothiophene as a privileged structure has readily become a subject of great interest
and actively pursued in recent years. This review focuses on facile and convenient methods of
synthesis of benzo[b]thiophene based molecules through different transition metals catalyzed
reactions.
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Affiliation(s)
- Saba Ejaz
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Muhammad Zubair
- Department of Chemistry, Government College University, Faisalabad 38000,, Pakistan
| | - Komal Rizwan
- Department of Chemistry, Government College University, Faisalabad 38000,, Pakistan
| | - Idris Karakaya
- Department of Chemistry, College of Basic Sciences, Gebze Technical University, 41400 Gebze, Turkey
| | - Tahir Rasheed
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Nasir Rasool
- Department of Chemistry, Government College University, Faisalabad 38000,, Pakistan
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5
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Abstract
Benzo[b]thiophenes are aromatic heterocyclic compounds containing benzene
and thiophene rings. This class of heterocycles is present in a large number of natural and
non-natural compounds. Benzo[b]thiophene derivatives have a broad range of applications in
medicinal chemistry such as antimicrobial, anticancer, antioxidant, anti-HIV and antiinflammatory
activities. The use of benzo[b]thiophene derivatives in other fields has also been
reported. Various benzo[b]thiophenes compounds have been employed as organic photoelectric
materials, while several benzo[b]thiophenes have been used as organic semiconductors.
Benzo[b]thiophenes have also been used as building blocks or intermediates for the synthesis
of pharmaceutically important molecules.
:
Due to such a wide range of applicability, the synthesis of benzo[b]thiophene derivatives has
attracted intensive research. Numerous mild and efficient approaches for the synthesis of
benzo[b]thiophenes have been developed over the years. Different catalysts and substrates have been applied for
benzo[b]thiophene synthesis. This review will focus on the studies in the construction of benzo[b]thiophene skeleton,
which date back from 2012.
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Affiliation(s)
- Dau Xuan Duc
- Department of Chemistry, Vinh University, Vinh City, Vietnam
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6
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Recent advances in the chemistry of thieno[2,3-b]pyridines 1. Methods of synthesis of thieno[2,3-b]pyridines. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2969-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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7
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Khaikate O, Inthalaeng N, Meesin J, Kantarod K, Pohmakotr M, Reutrakul V, Soorukram D, Leowanawat P, Kuhakarn C. Synthesis of Indolo- and Benzothieno[2,3-b]quinolines by a Cascade Cyclization of o-Alkynylisocyanobenzene Derivatives. J Org Chem 2019; 84:15131-15144. [DOI: 10.1021/acs.joc.9b02081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Onnicha Khaikate
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Natthamon Inthalaeng
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Jatuporn Meesin
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Kritchasorn Kantarod
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Manat Pohmakotr
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Darunee Soorukram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Pawaret Leowanawat
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
| | - Chutima Kuhakarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand
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8
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Kumar Y, Ila H. Domino Synthesis of 2-Substituted Benzothiazoles by Base-Promoted Intramolecular C–S Bond Formation. Org Lett 2019; 21:7863-7867. [DOI: 10.1021/acs.orglett.9b02855] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yogendra Kumar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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9
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Saraiah B, Gautam V, Acharya A, Pasha MA, Ila H. One-Pot Synthesis of 2-(Het)aryl/alkyl-3-cyanobenzofurans from 2-(2-Bromoaryl)-3-(het)aryl-3-(methylthio)acrylonitriles and Benzyl Carbamate. ACS OMEGA 2018; 3:8355-8364. [PMID: 31458967 PMCID: PMC6644376 DOI: 10.1021/acsomega.8b01172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 07/13/2018] [Indexed: 06/10/2023]
Abstract
A one-pot synthesis of 2-(het)aryl/alkyl-3-cyanobenzofurans has been reported. The overall sequence involves base-induced reaction of 2-(2-bromoaryl)-3-(het)aryl-3-(methylthio)acrylonitriles with benzyl carbamate, generating α-(het)aroyl-α-(2-bromoaryl)acetonitriles, which are in situ subjected to copper-catalyzed intramolecular O-arylation, furnishing the 2-(het)aryl/alkyl-3-cyanobenzofurans in high yields. A probable mechanism for the base-induced cleavage of 2-(2-bromoaryl)-3-(het)aryl-3-(methylthio)acrylonitriles to α-(het)aroyl-α-(2-bromoaryl)acetonitriles in the presence of benzyl carbamate has been proposed.
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Affiliation(s)
- Bonagiri Saraiah
- Department
of Studies in Chemistry, Central College campus, Bangalore University, Palace Road, Bangalore 560001, India
| | - Vibha Gautam
- New
Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Anand Acharya
- New
Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Mohamed Afzal Pasha
- Department
of Studies in Chemistry, Central College campus, Bangalore University, Palace Road, Bangalore 560001, India
| | - Hiriyakkanavar Ila
- New
Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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10
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Kesharwani T, Kornman C, Tonnaer A, Hayes A, Kim S, Dahal N, Romero R, Royappa A. Sodium halides as the source of electrophilic halogens in green synthesis of 3-halo- and 3, n-dihalobenzo[ b]thiophenes. Tetrahedron 2018; 74:2973-2984. [PMID: 30886445 PMCID: PMC6420224 DOI: 10.1016/j.tet.2018.04.080] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A convenient methodology for the synthesis of mono- and di-halogenated benzo[b]thiophenes is described herein, which utilizes copper(II) sulfate pentahydrate and various sodium halides in the presence of substituted 2-alkynylthioanisoles. The proposed method is facile, uses ethanol as a green solvent, and results in uniquely substituted benzo[b]thiophene structures with isolated yields up to 96%. The most useful component of this methodology is the selective introduction of bromine atoms at every available position (2-7) around the benzo[b]thiophene ring, while keeping position 3 occupied by a specific halogen atom such as Cl, Br or I. Aromatic halogens are useful reactive handles; therefore, the selective introduction of halogens at specific positions would be valuable in the targeted synthesis of bioactive molecules and complex organic materials via metal-catalyzed cross coupling reactions. This work is a novel approach towards the synthesis of dihalo substituted benzo[b]thiophene core structures, which provides a superior alternative to the current methods discussed herein.
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Affiliation(s)
- Tanay Kesharwani
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Cory Kornman
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Amanda Tonnaer
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Amanda Hayes
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Seoyoung Kim
- Department of Chemistry, Bard College, Annandale-on-Hudson, NY 32514 USA
| | - Nikesh Dahal
- Department of Chemistry, Bard College, Annandale-on-Hudson, NY 32514 USA
| | - Ralf Romero
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
| | - Andrew Royappa
- Department of Chemistry, University of West Florida, Pensacola, FL 32514, USA
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11
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Govindaraju S, Tabassum S, Pasha MA. Citric-Acid-Catalyzed Green and Sustainable Synthesis of Novel Functionalized Pyrano[2, 3- e
]pyrimidin- and Pyrano[2, 3- d
]pyrazol-amines in Water via One-Pot Multicomponent Approaches. ChemistrySelect 2018. [DOI: 10.1002/slct.201703023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Santhosh Govindaraju
- Department of Science and humanities, Christ (Deemed to be University); Faculty of Engineering, Kumbalagodu; Mysore Road Bengaluru 560074
| | - Sumaiya Tabassum
- Department of Studies in Chemistry, Central College Campus; Bangalore University; Palace Road Bengaluru 560001
| | - Mohamed Afzal Pasha
- Department of Studies in Chemistry, Central College Campus; Bangalore University; Palace Road Bengaluru 560001
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12
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Bandyopadhyay D, Thirupathi A, Dhage NM, Mohanta N, Peruncheralathan S. Nickel catalyzed site selective C–H functionalization of α-aryl-thioamides. Org Biomol Chem 2018; 16:6405-6409. [DOI: 10.1039/c8ob01712c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A nickel catalyzed C–H bond functionalization reaction has been used for the first time to study an intramolecular site-selective C–S bond formation of arenes.
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Affiliation(s)
- Debashruti Bandyopadhyay
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
| | - Annaram Thirupathi
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
| | - Nagsen Munjaji Dhage
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
| | - Nirmala Mohanta
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
| | - S. Peruncheralathan
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
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