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Ultrasound-Assisted Wittig Reaction for the Synthesis of 3-Substituted 4-Chloroquinolines and Quinolin-4(1H)-ones with Extended π-Conjugated Systems. J CHEM-NY 2022. [DOI: 10.1155/2022/4807767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
3-(Vinyl-/buta-1,3-dien-1-yl/4-phenylbuta-1,3-dien-1-yl)-4-chloro quinolines and quinolin-4(1H)-ones were synthesized by ultrasound-assisted Wittig reaction of the corresponding 4-chloro-3-formylquinoline and 3-formylquinolin-4(1H)-ones with nonstabilized ylides. Ease execution, mild conditions, and high yields make this method exploitable for the generation of libraries of 3-substituted 4-chloroquinolines and quinolin-4(1H)-ones with extended π-conjugated systems. To demonstrate the usefulness of these compounds as precursors for the synthesis of more complex structures, 3-vinylquinolin-4(1H)-ones were used as dienes in the Diels–Alder reaction with N-methylmaleimide to produce novel acridone derivatives. The attempted Diels–Alder reaction with 3-(buta-1,3-dien-1-yl)quinolin-4(1H)-one did not afford the expected cycloadduct; instead, 2-methyl-2H-pyrano[3,2-c]quinoline was obtained. The structures and stereochemistry of the new compounds were established by NMR studies.
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Thopate Y, Singh R, Rastogi SK, Sinha AK. Cascade Multicomponent reaction Involving Unprecedented Gould‐Jacobs‐Heck/Suzuki Coupling‐Hydrolysis‐Decarboxylation in one pot: Rapid Synthesis of Hybrid Heterocyclic Molecules. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yogesh Thopate
- CSIR-Central Drug Research Institute: Central Drug Research Institute medicinal and process chemistry INDIA
| | - Richa Singh
- CSIR-Central Drug Research Institute Medicinal and Process Chemistry Division medicinal and process chemistry lucknow INDIA
| | - Sumit K Rastogi
- CSIR-Central Drug Research Institute: Central Drug Research Institute medicinal and process chemistry INDIA
| | - Arun Kumar Sinha
- CSIR-CDRI (Central Drug Research Institute) Medicinal and Process Chemistry Sitapur Road 226031 Lucknow INDIA
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Rocha DHA, Pinto DCGA, Silva AMS. Applications of the Wittig Reaction on the Synthesis of Natural and Natural-Analogue Heterocyclic Compounds. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800523] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Djenisa H. A. Rocha
- Department of Chemistry & QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Diana C. G. A. Pinto
- Department of Chemistry & QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Artur M. S. Silva
- Department of Chemistry & QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
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