1
|
Mari G, De Crescentini L, Favi G, Mantellini F, Olivieri D, Santeusanio S. Challenge N- versus O-six-membered annulation: FeCl 3-catalyzed synthesis of heterocyclic N, O-aminals. Beilstein J Org Chem 2024; 20:1412-1420. [PMID: 38952961 PMCID: PMC11216082 DOI: 10.3762/bjoc.20.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 06/14/2024] [Indexed: 07/03/2024] Open
Abstract
A new class of heterocyclic N,O-aminal and hemiaminal scaffolds was successfully obtained by means of a three-component reaction (3-CR) of 1,2-diaza-1,3-dienes (DDs), α-aminoacetals and iso(thio)cyanates. These stable imine surrogates are generated from key-substituted (thio)hydantoin intermediates through selective FeCl3-catalyzed intramolecular N-annulation.
Collapse
Affiliation(s)
- Giacomo Mari
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Lucia De Crescentini
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Gianfranco Favi
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Fabio Mantellini
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Diego Olivieri
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Stefania Santeusanio
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| |
Collapse
|
2
|
Gómez-Gil S, Solas M, Suárez-Pantiga S, Sanz R. Brønsted Acid-Catalyzed Synthesis of 4-Functionalized Tetrahydrocarbazol-1-ones from 1,4-Dicarbonylindole Derivatives. J Org Chem 2024; 89:505-520. [PMID: 38085096 PMCID: PMC10777410 DOI: 10.1021/acs.joc.3c02248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 01/06/2024]
Abstract
A p-toluenesulfonic acid-catalyzed cascade reaction is reported for the synthesis of 4-functionalized tetrahydrocarbazolones via the reaction of 4-(indol-2-yl)-4-oxobutanal derivatives with a variety of nucleophiles in acetonitrile or hexafluoroisopropanol. After the initial intramolecular Friedel-Crafts hydroxyalkylation, the 3-indolylmethanol intermediate is subsequently activated and reacted with the external nucleophile. The reaction conditions are crucial to avoid alternative reaction pathways, allowing direct substitution reaction with thiols, (hetero)arenes, alkenes, or sulfinates. The procedure features high overall yields to access a diverse family of compounds bearing the tetrahydrocarbazole core.
Collapse
Affiliation(s)
- Sara Gómez-Gil
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Marta Solas
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Samuel Suárez-Pantiga
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Roberto Sanz
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| |
Collapse
|
3
|
Das AJ, Das SK. One-Pot Double Intramolecular Cyclization Approach to Tetralin-Based Cis-Fused Tetracyclic Compounds. J Org Chem 2022; 87:5085-5096. [PMID: 35333509 DOI: 10.1021/acs.joc.1c02963] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Presented herein is a BF3·OEt2-mediated, diastereoselective one-pot double cyclization of 4-aryl-2-[(arylthio)methyl]butanals leading to the formation of cis-tetrahydro-6H-naphtho[2,1-c]thiochromenes for the first time. Mechanistically, the formation of the title products involves the one-pot intramolecular Friedel-Crafts hydroxyalkylation/intramolecular Friedel-Crafts alkylation cascade. This synthetic methodology is featured by its high atom economy, broad substrate scope, mild transition-metal-free reaction conditions, capability to assemble two new rings in one pot, and moderate to high yields (up to 94% yield). It was then applied in the synthesis of a thia analogue of brazilane and a chromeno[3,4-c]chromene derivative. Moreover, the methodology was successfully extended to the synthesis of cis-hexahydrobenzo[c]phenanthrenes. Specifically, 1,5-diarylpentan-3-ones were first subjected to the Corey-Chaykovsky reaction, and the resulting epoxides, without being chromatographically isolated, were treated with BF3·OEt2 to afford the cyclized products in high yields (up to 84% yield over two steps).
Collapse
Affiliation(s)
- Arup Jyoti Das
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784028, India
| | - Sajal Kumar Das
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784028, India
| |
Collapse
|
4
|
Lin XL, Yu Y, Zhang L, Leng LJ, Xiao DR, Cai T, Luo QL. Switchable synthesis of 1,4-bridged dihydroisoquinoline-3-ones and isoquinoline-1,3,4-triones through radical oxidation of isoquinolinium salts with phenyliodine( iii) diacetate. Org Chem Front 2022. [DOI: 10.1039/d2qo00887d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A switchable synthesis of 1,4-bridged dihydroisoquinoline-3-ones and isoquinoline-1,3,4-triones is developed via radical oxidation of isoquinolinium salts with PhI(OAc)2.
Collapse
Affiliation(s)
- Xiao-Long Lin
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yan Yu
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Liang Zhang
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Li-Jing Leng
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Dong-Rong Xiao
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Tian Cai
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Southwest University, Chongqing 400715, China
| | - Qun-Li Luo
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Southwest University, Chongqing 400715, China
| |
Collapse
|
5
|
Gao ZY, He Y, Li LY, Tian JS, Loh TP. BF 3-promoted reactions of α-amino acetals with alkynes to 2,5-disubstituted pyrroles. Org Chem Front 2022. [DOI: 10.1039/d2qo00405d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient BF3-promoted cyclization of α-amino acetals with alkynes for the assembly of substituted pyrroles has been developed. This cascade process can be easily achieved through a simple metal-free operation under mild conditions.
Collapse
Affiliation(s)
- Zhi-Yuan Gao
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Yu He
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Lan-Yang Li
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Teck-Peng Loh
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| |
Collapse
|
6
|
Papis M, Loro C, Penso M, Broggini G, Foschi F. Synthesis of Morpholino Nucleosides Starting From Enantiopure Glycidol. Org Chem Front 2022. [DOI: 10.1039/d2qo00400c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A protocol for the synthesis of modified morpholino monomers was performed in few steps through the condensation between 6-hydroxymethyl-morpholine acetal and nucleobases under Lewis acid conditions. The key common precursor...
Collapse
|
7
|
The Highly Regioselective Synthesis of Novel Imidazolidin-2-Ones via the Intramolecular Cyclization/Electrophilic Substitution of Urea Derivatives and the Evaluation of Their Anticancer Activity. Molecules 2021; 26:molecules26154432. [PMID: 34361587 PMCID: PMC8347191 DOI: 10.3390/molecules26154432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 11/21/2022] Open
Abstract
A series of novel 4-(het)arylimidazoldin-2-ones were obtained by the acid-catalyzed reaction of (2,2-diethoxyethyl)ureas with aromatic and heterocyclic C-nucleophiles. The proposed approach to substituted imidazolidinones benefits from excellent regioselectivity, readily available starting materials and a simple procedure. The regioselectivity of the reaction was rationalized by quantum chemistry calculations and control experiments. The anti-cancer activity of the obtained compounds was tested in vitro.
Collapse
|
8
|
Buev EM, Stepanov MA, Moshkin VS, Sosnovskikh VY. Synthesis of 6,12-Methanodibenzo[c,f]azocines and 4-Aryltetrahydroisoquinolines from Aromatic Aldehydes. Org Lett 2019; 22:631-635. [DOI: 10.1021/acs.orglett.9b04401] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Evgeny M. Buev
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Maxim A. Stepanov
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Vladimir S. Moshkin
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| | - Vyacheslav Y. Sosnovskikh
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russian Federation
| |
Collapse
|