1
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Bondarev VL, Festa AA, Storozhenko OA, Golantsov NE, Pappula V, Tskhovrebov AG, Varlamov AV, Voskressensky LG. Azo Coupling of Indoles Revisited: Synthesis of Biindolyl Photoswitches via the Azo-Coupling/C-H Functionalization Domino Approach. J Org Chem 2023; 88:12949-12957. [PMID: 37624664 DOI: 10.1021/acs.joc.3c00794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
When azo coupling of aryldiazonium salts with indoles was carried out in aprotic nonpolar solvent on air, a pseudo-three-component reaction has been discovered. Azo coupling is followed by a nucleophilic addition of a second indole unit to the indolium intermediate; aromatization and oxidation are achieved under air.
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Affiliation(s)
- Vladimir L Bondarev
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
| | - Alexey A Festa
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
| | - Olga A Storozhenko
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
| | - Nikita E Golantsov
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
| | - Venkatanarayana Pappula
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
| | - Alexander G Tskhovrebov
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
| | - Alexey V Varlamov
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
| | - Leonid G Voskressensky
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia
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2
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He Z, Wang Z, Gao Z, Qian H, Ding W, Jin H, Liu Y, Zhou B. Aryl boronic acid-controlled divergent ring-contraction and ring-opening/isomerization reaction of tert-cyclobutanols enabled by nickel catalysis. Org Biomol Chem 2023; 21:6493-6497. [PMID: 37529886 DOI: 10.1039/d3ob00894k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
In this work, we wish to present a nickel-catalyzed divergent ring-contraction and ring-opening/isomerization reaction of tert-cyclobutanols. The key to control these two different reaction pathways is to choose appropriate boronic acid, where the use of phenylboronic acid and pyrimidin-5-ylboronic acid enables a ring-contraction and ring-opening reaction/isomerization, respectively. Both cyclopropyl aryl methanones and 1-aryl butan-1-ones could be selectively obtained.
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Affiliation(s)
- Zhichang He
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Zhengwen Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Zhao Gao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Hongwei Qian
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Wangqiannan Ding
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Hongwei Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Yunkui Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Bingwei Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
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3
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Gómez-Gil S, Rubio-Presa R, Hernández-Ruiz R, Suárez-Pantiga S, Pedrosa MR, Sanz R. Synthesis of 1,4-ketoaldehydes and 1,4-diketones by Mo-catalyzed oxidative cleavage of cyclobutane-1,2-diols. Org Biomol Chem 2023; 21:4185-4190. [PMID: 37128956 DOI: 10.1039/d3ob00436h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A new two-step procedure for the synthesis of 1,4-dicarbonyls has been developed involving an efficient and clean Mo-catalyzed oxidative cleavage of cyclobutane-1,2-diols with DMSO, which is used as solvent and oxidant. The required starting glycols were prepared by nucleophilic additions of organolithiums and Grignard reagents to easily available 2-hydroxycyclobutanones.
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Affiliation(s)
- Sara Gómez-Gil
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Rubén Rubio-Presa
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Raquel Hernández-Ruiz
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Samuel Suárez-Pantiga
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - María R Pedrosa
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Roberto Sanz
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
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4
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Continuous-Flow Synthesis of Arylthio-Cyclopropyl Carbonyl Compounds. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227943. [PMID: 36432044 PMCID: PMC9699303 DOI: 10.3390/molecules27227943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022]
Abstract
The straightforward, continuous-flow synthesis of cyclopropyl carbaldehydes and ketones has been developed starting from 2-hydroxycyclobutanones and aryl thiols. This acid-catalyzed mediated procedure allows access to the multigram and easily scalable synthesis of cyclopropyl adducts under mild conditions, using reusable Amberlyst-35 as a catalyst. The resins, suitably ground and used for filling steel columns, have been characterized via TGA, ATR, SEM and BET analyses to describe the physical-chemical properties of the packed bed and the continuous-flow system in detail. To highlight the synthetic versatility of the arylthiocyclopropyl carbonyl compounds, a series of selective oxidation reactions have been performed to access sulfoxide and sulfone carbaldehyde cyclopropanes, oxiranes and carboxylic acid derivatives.
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5
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Cheng X, Wang L, Liu Y, Wan X, Xiang Z, Li R, Wan X. Molecular Iodine‐Catalysed Reductive Alkylation of Indoles: Late‐Stage Diversification for Bioactive Molecules. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xionglve Cheng
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Lili Wang
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Yide Liu
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Xiao Wan
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Zixin Xiang
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Ruyi Li
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Xiaobing Wan
- Soochow University College of Chemistry, Chemical Engineering and Materials Science Renai road 215123 Suzhou CHINA
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6
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Song H, Zhou H, Shen Y, Wang H, Song H, Cai X, Xu C. HFIP as Protonation Reagent and Solvent for Regioselective Alkylation of Indoles with All-Carbon Centers. J Org Chem 2022; 87:1086-1097. [PMID: 35015536 DOI: 10.1021/acs.joc.1c02412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The regio- and chemoselective construction of indole bearing an all-carbon center at the C3-position, a versatile bioactive building block, by C(sp2)-C(sp3) formation with olefins has been achieved through utilization of hexafluoroisopropanol (HFIP) as the protonation reagent and solvent. The catalytic reactions are operationally simple and green compared with previous reports utilizing elaborated olefins and catalysts. This protocol allows for alkylation of a variety of substituted indoles with diverse of styrene type alkenes in excellent yields and with high selectivity. Application of this protocol to the synthesis of drug was pursued and with an improved yield in contrast to previous art. Catalytic kinetics and deuterium-labeling experiments suggest that the rate-determining step involves the protonation of olefin by HFIP to generate carbocation, followed by electrophilic addition to indole derivative.
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Affiliation(s)
- Heng Song
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
| | - Hu Zhou
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
| | - Yang Shen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
| | - Hao Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
| | - Hua Song
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
| | - Xingwei Cai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
| | - Chen Xu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
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7
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Luridiana A, Frongia A, Scorciapino MA, Malloci G, Manconi B, Serrao S, Ricci PC, Secci F. Z
‐Selective Synthesis of α‐Sulfanyl Carbonyl Compounds from Internal Alkynes and Thiols via Photoredox Catalysis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alberto Luridiana
- Department of Chemical Sciences and Geology Università degli studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato Italy
| | - Angelo Frongia
- Department of Chemical Sciences and Geology Università degli studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato Italy
| | - Mariano Andrea Scorciapino
- Department of Chemical Sciences and Geology Università degli studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato Italy
| | - Giuliano Malloci
- Department of Physics Università degli Studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato (Cagliari) Italy
| | - Barbara Manconi
- Department of Chemical Sciences and Geology Università degli studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato Italy
| | - Simone Serrao
- Department of Chemical Sciences and Geology Università degli studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato Italy
| | - Pier Carlo Ricci
- Department of Physics Università degli Studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato (Cagliari) Italy
| | - Francesco Secci
- Department of Chemical Sciences and Geology Università degli studi di Cagliari Complesso Universitario di Monserrato 09042 Monserrato Italy
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8
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Elkamhawy A, Kim HJ, Elsherbeny MH, Paik S, Park JH, Gotina L, Abdellattif MH, Gouda NA, Cho J, Lee K, Nim Pae A, Park KD, Roh EJ. Discovery of 3,4-dichloro-N-(1H-indol-5-yl)benzamide: A highly potent, selective, and competitive hMAO-B inhibitor with high BBB permeability profile and neuroprotective action. Bioorg Chem 2021; 116:105352. [PMID: 34562673 DOI: 10.1016/j.bioorg.2021.105352] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/29/2021] [Accepted: 09/07/2021] [Indexed: 01/07/2023]
Abstract
Since there is no disease-modifying treatment discovered yet for Parkinson's disease (PD), there is still a vital need to develop novel selective monoamine oxidase B (MAO-B) inhibitors as promising therapeutically active candidates for PD patients. Herein, we report the design, synthesis, and full characterization of new twenty-six indole derivatives as potential human MAO-B (hMAO-B) selective inhibitors. Six compounds (2i, 3b-e, and 5) exhibited low micromolar to nanomolar inhibitory activities over hMAO-B; compared to our recently reported N-substituted indole-based lead compound VIII (hMAO-B IC50 = 777 nM), compound 5 (3,4-dichloro-N-(1H-indol-5-yl)benzamide) exhibited 18-fold increase in potency (IC50 = 42 nM). A selectivity study over hMAO-A revealed an excellent selectivity index of compound 5 (SI > 2375) with a 47-fold increase compared to rasagiline (II, a well-known MAO-B inhibitor, SI > 50). A further kinetic evaluation of compound 5 over hMAO-B showed a reversible and competitive mode of inhibition with Ki value of 7 nM. Highly effective permeability and high CNS bioavailability of compound 5 with Pe = 54.49 × 10-6 cm/s were demonstrated. Compound 5 also exhibited a low cytotoxicity profile and a promising neuroprotective effect against the 6-hydroxydopamine-induced neuronal cell damage in PC12 cells, which was more effective than that of rasagiline. Docking simulations on both hMAO-B and hMAO-A supported the in vitro data and served as further molecular evidence. Accordingly, we report the discovery of compound 5 as one of the most potent indole-based MAO-B inhibitors to date which is noteworthy to be further evaluated as a promising agent for PD treatment.
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Affiliation(s)
- Ahmed Elkamhawy
- College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Republic of Korea; Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| | - Hyeon Jeong Kim
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Mohamed H Elsherbeny
- Chemical Kinomics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea; Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, Giza 12566, Egypt
| | - Sora Paik
- Chemical Kinomics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Jong-Hyun Park
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Lizaveta Gotina
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Magda H Abdellattif
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Noha A Gouda
- College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Jungsook Cho
- College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Kyeong Lee
- College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Ae Nim Pae
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Ki Duk Park
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Eun Joo Roh
- Chemical Kinomics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea.
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9
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Chen S, Zhang Z, Jiang C, Zhao C, Luo H, Huang J, Yang Z. Stereoselective Synthesis of trans-Decalin-Based Spirocarbocycles via Photocyclization of 1,2-Diketones. ACS OMEGA 2021; 6:18848-18859. [PMID: 34337224 PMCID: PMC8320103 DOI: 10.1021/acsomega.1c02054] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
Diastereoselective synthesis of the trans-decalin-based α-hydroxyl butanone spirocarbocycles bearing all-carbon quaternary stereogenic centers has been achieved via Norrish-Yang photocyclization of trans-decalin-substituted-2,3-butanediones using daylight. Density functional theory (DFT) calculations suggest that this diastereoselective reaction is affected by both substrate conformation and intramolecular hydrogen bonds. The developed chemistry could be applied to synthesizing the derivatives of the trans-decalin-based biologically important natural products.
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Affiliation(s)
- Sijia Chen
- State
Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate
School, Shenzhen 518055, China
| | - Zhongchao Zhang
- State
Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate
School, Shenzhen 518055, China
| | - Chongguo Jiang
- State
Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate
School, Shenzhen 518055, China
| | - Chunbo Zhao
- State
Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate
School, Shenzhen 518055, China
| | - Haojie Luo
- State
Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate
School, Shenzhen 518055, China
| | - Jun Huang
- State
Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate
School, Shenzhen 518055, China
| | - Zhen Yang
- State
Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate
School, Shenzhen 518055, China
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry
of Education and Beijing National Laboratory for Molecular Science
(BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- Shenzhen
Bay Laboratory, Shenzhen 518055, China
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10
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Cocco A, Rubanu MG, Sechi ML, Frongia A, Mastrorilli P, Degennaro L, Colella M, Luisi R, Secci F. Lithiated three-membered heterocycles as chiral nucleophiles in the enantioselective synthesis of 1-oxaspiro[2,3]hexanes. Org Biomol Chem 2021; 19:1945-1949. [PMID: 33595577 DOI: 10.1039/d0ob00771d] [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
The reaction between configurably stable α-lithiated oxiranes and 3-substituted cyclobutanones allows obtaining enantiomerically enriched cyclobutanols (er > 98 : 2). These adducts, subjected to base-mediated Payne rearrangement, lead to the synthesis of a new class of oxaspirohexanes, useful precursors of 2,4-disubstituted cyclopentanones.
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Affiliation(s)
- Andrea Cocco
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Maria Grazia Rubanu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Maria Laura Sechi
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Angelo Frongia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Pietro Mastrorilli
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Leonardo Degennaro
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Marco Colella
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Renzo Luisi
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Francesco Secci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
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11
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Song KL, Wu B, Gan WE, Yang WC, Chen XB, Cao J, Xu LW. Palladium-catalyzed gaseous CO-free carbonylative C–C bond activation of cyclobutanones. Org Chem Front 2021. [DOI: 10.1039/d1qo00467k] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A palladium-catalyzed carbonylative C–C bond activation reaction of cyclobutanones is reported, and it affords a variety of indanones bearing ester or amide groups using phenyl formate and benzene-1,3,5-triyl triformate as CO surrogates.
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Affiliation(s)
- Kun-Long Song
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- and Key Laboratory of Organosilicon Material Technology of Zhejiang Province
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Bin Wu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- and Key Laboratory of Organosilicon Material Technology of Zhejiang Province
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Wan-Er Gan
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- and Key Laboratory of Organosilicon Material Technology of Zhejiang Province
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Wan-Chun Yang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- and Key Laboratory of Organosilicon Material Technology of Zhejiang Province
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Xiao-Bing Chen
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- and Key Laboratory of Organosilicon Material Technology of Zhejiang Province
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Jian Cao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- and Key Laboratory of Organosilicon Material Technology of Zhejiang Province
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- and Key Laboratory of Organosilicon Material Technology of Zhejiang Province
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
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12
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Secci F, Porcu S, Rodriguez CA, Frongia A. A Catalytic One-Pot Synthesis of Indolyl Cyclobutanones. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1706087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractA general strategy for the synthesis of indolyl cyclobutanones via a tandem Brønsted acid catalyzed 2-hydroxycyclobutanone activation–indole nucleophilic addition has been exploited. The procedure leads to a wide range of 2- and 3-functionalized indole derivatives in good to high yields with broad substrate scope.
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13
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Abstract
A new pyrrole-substituted terpyridine derivative that possesses an allene moiety was obtained as an “unexpected” sole product during an attempt to alkylate the N-atom of pyrrole with propargyl bromide in order to obtain an alkyne-functionalized terpyridine.
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14
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Secci F, Porcu S, Luridiana A, Frongia A, Ricci PC. Visible light promoted continuous flow photocyclization of 1,2-diketones. Org Biomol Chem 2020; 18:3684-3689. [PMID: 32352131 DOI: 10.1039/d0ob00532k] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The continuous flow Norrish-Yang photocyclization of 1,2-diketones has been developed and used for the synthesis of a large number of functionalized 2-hydroxycyclobutanones, under blue light irradiation and employing acetone as a solvent. This eco-friendly procedure represents a valid alternative to the reactions carried out in batches thus reducing the reaction times, the formation of secondary products and simplifying the purification steps. The use of differently substituted diketone compounds has allowed us to obtain a wide range of 2 and 3-functionalized cyclobutanones, thus allowing the evaluation of the scope and limitations of this procedure.
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Affiliation(s)
- Francesco Secci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554, bivio per Sestu, 09042, Monserrato (Ca), Italy.
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15
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Gao J, Liu C, Li Z, Liang H, Ao Y, Zhao J, Wang Y, Wu Y, Liu Y. Catalytic C-C Cleavage/Alkyne-Carbonyl Metathesis Sequence of Cyclobutanones. Org Lett 2020; 22:3993-3999. [PMID: 32352299 DOI: 10.1021/acs.orglett.0c01317] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A ring-opening/alkyne-carbonyl metathesis sequence of alkyne-tethered cyclobutanones catalyzed by AgSbF6 is realized for the first time to furnish multisubstituted naphthyl ketones under mild conditions. A range of substrates decorated with various substituents at different positions were all well accommodated. Preliminary mechanistic studies show that silver salt acted as a Lewis acid to facilitate both C-C cleavage of the cyclobutanone moiety and the subsequent metathesis between C═O and C≡C bonds.
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Affiliation(s)
- Jiqiang Gao
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
| | - Chunhui Liu
- School of Chemistry and Chemical Engineering, Xuchang University, Xuchang, Henan 461000, P.R. China.,College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Zhongjuan Li
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
| | - Haotian Liang
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
| | - Yuhui Ao
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
| | - Jinbo Zhao
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
| | - Yuchao Wang
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
| | - Yuanqi Wu
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
| | - Yu Liu
- Department of Chemistry, Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P.R. China
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16
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Martínez-Lara F, Suárez A, Suárez-Pantiga S, Tapia MJ, Sanz R. Straight access to highly fluorescent angular indolocarbazoles via merging Au- and Mo-catalysis. Org Chem Front 2020. [DOI: 10.1039/d0qo00405g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A straightforward and efficient synthesis of the two less explored types of indolocarbazoles has been developed giving rise to highly fluorescent compounds with fluorescence quantum yields around 0.7.
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Affiliation(s)
| | - Anisley Suárez
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- 09001-Burgos
- Spain
| | | | - M. José Tapia
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- 09001-Burgos
- Spain
| | - Roberto Sanz
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- 09001-Burgos
- Spain
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17
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Kundu S, Banerjee A, Maji MS. Brønsted Acid-Catalyzed Tandem Pinacol-Type Rearrangement for the Synthesis of α-(3-Indolyl) Ketones by Using α-Hydroxy Aldehydes. J Org Chem 2019; 84:16003-16012. [PMID: 31747752 DOI: 10.1021/acs.joc.9b02474] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Samrat Kundu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Ankush Banerjee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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