1
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Ishibashi F, Zha S, Kondo T, Sakamoto M, Ueno M, Fukuda T. Synthesis and structure-activity relationship study of aldose reductase inhibiting marine alkaloid lukianol A and its derivatives. Biosci Biotechnol Biochem 2023; 87:148-157. [PMID: 36441013 DOI: 10.1093/bbb/zbac193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/21/2022] [Indexed: 11/30/2022]
Abstract
Lukianol A (1a) and its six derivatives 1b-1g, in which each hydroxyl groups of 1a was individually modified, were synthesized via the common intermediate 7a, which was obtained by condensation of the styryl carbazate 10 with p-hydroxyphenylpyruvic acid and subsequent [3,3]-sigmatropic rearrangement. The synthesized lukianol derivatives were evaluated for their ability to inhibit human aldose reductase. 4'-O-methyl (1b) and 4'-dehydroxy (1g) derivatives showed the same level of inhibitory activity as 1a (IC50 2.2 µm), indicating that the 4'-OH is irrelevant for the activity. In contrast, methylation of the hydroxyl group at the 4″'-position (1d) resulted in the loss of activity at a concentration of 10 µm, and masking the hydroxyl group at the 4″-position (1e) caused a 9-fold decrease in activity compared with that of 1b, suggesting that the 4″-OH is an essential group, and the 4″'-OH is required for higher activity.
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Affiliation(s)
- Fumito Ishibashi
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, Japan.,Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, Japan
| | - Shijiao Zha
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, China
| | - Taiyo Kondo
- Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, Japan
| | - Mayu Sakamoto
- Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, Japan
| | - Mikinori Ueno
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, Japan.,Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, Japan
| | - Tsutomu Fukuda
- Environmental Protection Center, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, Japan
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2
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Lao T, Chen J, Zhou X, Zhang Z, Cao G, Su Z, Yu Y, Cao H. Visible-light-induced synthesis of N-disulfanyl indoles, pyrroles or carbazoles via the construction of stable S-S-N bonds. Chem Commun (Camb) 2023; 59:458-461. [PMID: 36519391 DOI: 10.1039/d2cc04616d] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A simple and efficient visible-light-induced approach for the formation of stable S-S-N bonds has been developed. Through these photocatalytic reactions, a series of N-disulfanyl indoles, pyrroles and carbazoles were afforded with good to excellent yields. Moreover, the gram-scale experiment has confirmed the practicability of this approach.
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Affiliation(s)
- Tianfeng Lao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Jianxin Chen
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Xianhang Zhou
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Ziwu Zhang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Gao Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Zhengquan Su
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Yue Yu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China. .,Guangdong Pharmaceutical University-University of Hong Kong Joint Biomedical Innovation Platform, Zhongshan 528437, China
| | - Hua Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China. .,Guangdong Pharmaceutical University-University of Hong Kong Joint Biomedical Innovation Platform, Zhongshan 528437, China
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3
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Casault P, Ricard S, Daoust B. Copper-Catalyzed Cross-Coupling Between (E)-1,2-Diiodoethene and
Carbazates: Entry to β-Functionalized N-Alkenylcarbazates. LETT ORG CHEM 2022. [DOI: 10.2174/1570180818666210803165347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aims:
This work aims to widen the scope of methodologies to prepare functionalized
N-alkenylcarbazates.
Background:
Alkenylcarbazates are generally prepared via Aza-Baylis-Hillman reactions, nucleophilic
attack on ketones or a tandem carbometallation/amidation reaction of alkynes.
Objective:
The objective of this work is to develop a method to prepare functionalized Nalkenylcarbazates
that alleviates the problem encountered in the above methods (use of electron
deficient alkenes, use of stoiechiometric amounts of metal, access to symmetrical dicarbazates only).
Methods:
Use of copper-catalyzed cross-coupling between vinylic diiodide and carbazates to prepare
functionalized N-alkenylcarbazates.
Results:
Various β-iodovinylcarbazates were synthesized with up to good yields. The highest
yields were obtained using dicarbazates. Functionalization of β-iodovinylcarbazate demonstrated
that the vinyl iodide moiety of these molecules can be substituted by a variety of functional
groups via transition metal-catalyzed coupling reactions.
Conclusion:
Copper-catalyzed cross-coupling reaction is efficient to prepare functionalized
N-alkenylcarbazates.
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Affiliation(s)
- Paméla Casault
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Simon Ricard
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Benoit Daoust
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
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4
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Ravi Kishore D, Sreenivasulu C, Satyanarayana G, Dapkekar AB. Recent Applications on Dual-Catalysis for C–C and C–X Cross-Coupling Reactions. SYNOPEN 2022. [DOI: 10.1055/a-1896-4168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
AbstractCoupling reactions stand amid the most significant reactions in synthetic organic chemistry. Of late, these coupling strategies are being viewed as a versatile synthetic tool for a wide range of organic transformations in many sectors of chemistry, ranging from indispensable synthetic scaffolds and natural products of biological significance to novel organic materials. Further, the use of dual-catalysis in accomplishing various interesting cross-coupling transformations is an emerging field in synthetic organic chemistry, owing to their high catalytic performance rather than the use of a single catalyst. In recent years, synthetic organic chemists have given considerable attention to hetero-dual catalysis; wherein these catalytic systems have been employed for the construction of versatile carbon–carbon [C(sp
3)–C(sp
3), C(sp
3)–C(sp
2), C(sp
2)–C(sp
2)] and carbon–heteroatom (C–N, C–O, C–P, C–S) bonds. Therefore, in this mini-review, we are emphasizing recently developed various cross-coupling reactions catalysed by transition-metal dual-catalysis (i.e., using palladium and copper catalysts, but omitting the reports on photoredox/metal catalysis).1 Introduction2 Cu/Pd-Catalysed Bond Formation2.1 Pd/Cu-Catalysed C(sp
3)–C(sp
2) Bond Formation2.2 Pd/Cu-Catalysed C(sp
2)–C(sp
2) Bond Formation2.3 Pd/Cu-Catalysed C(sp)–C(sp
2) Bond Formation2.4 Pd/Cu-Catalysed C(sp
3)–C(sp
3) Bond Formation2.5 Pd/Cu-Catalysed C–X (X = B, N, P, S, Si) Bond Formation3 Conclusion
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5
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Pawar AP, Yadav J, Dolas AJ, Iype E, Rangan K, Kumar I. Catalyst-free direct regiospecific multicomponent synthesis of C3-functionalized pyrroles. Org Biomol Chem 2022; 20:5747-5758. [PMID: 35775588 DOI: 10.1039/d2ob00961g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An operationally simple catalyst-free protocol for the direct regiospecific synthesis of β-(C3)-substituted pyrroles has been developed. The enamine intermediate, in situ generated from succinaldehyde and a primary amine, was trapped with activated carbonyls before the Paal-Knorr reaction in a direct multicomponent "just-mix" fashion to furnish pyrroles with overall good yields. Several C3-substituted N-alkyl/aryl/H pyrroles have been produced under open-flask conditions with high atom economy and avoiding protection-deprotection chemistry.
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Affiliation(s)
- Amol Prakash Pawar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Jyothi Yadav
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Atul Jankiram Dolas
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Eldhose Iype
- College of Engineering and Technology, American University of the Middle East, Kuwait
| | - Krishnan Rangan
- Department of Chemistry, BITS Pilani, Hyderabad Campus, Secunderabad, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
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6
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Foley DJ, Waldmann H. Ketones as strategic building blocks for the synthesis of natural product-inspired compounds. Chem Soc Rev 2022; 51:4094-4120. [PMID: 35506561 DOI: 10.1039/d2cs00101b] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Natural product-inspired compound collections serve as excellent sources for the identification of new bioactive compounds to treat disease. However, such compounds must necessarily be more structurally-enriched than traditional screening compounds, therefore inventive synthetic strategies and reliable methods are needed to prepare them. Amongst the various possible starting materials that could be considered for the synthesis of natural product-inspired compounds, ketones can be especially valuable due to the vast variety of complexity-building synthetic transformations that they can take part in, their high prevalence as commercial building blocks, and relative ease of synthesis. With a view towards developing a unified synthetic strategy for the preparation of next generation bioactive compound collections, this review considers whether ketones could serve as general precursors in this regard, and summarises the opulence of synthetic transformations available for the annulation of natural product ring-systems to ketone starting materials.
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Affiliation(s)
- Daniel J Foley
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand. .,Max-Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Herbert Waldmann
- Max-Planck Institute of Molecular Physiology, Dortmund, Germany.,Faculty of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
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7
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Xu WL, Zhao WM, Zhang RX, Chen J, Zhou L. Organocatalytic cycloaddition-elimination cascade for atroposelective construction of heterobiaryls. Chem Sci 2021; 12:14920-14926. [PMID: 34820108 PMCID: PMC8597853 DOI: 10.1039/d1sc05161j] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/28/2021] [Indexed: 12/19/2022] Open
Abstract
The first chiral phosphoric acid (CPA) catalyzed cycloaddition–elimination cascade reaction of 2-naphthol- and phenol-derived enecarbamates with azonaphthalenes has been established, providing a highly atroposelective route to an array of axially chiral aryl-C3-benzoindoles in excellent yields with excellent enantioselectivities. The success of this strategy derives from the stepwise process involving CPA-catalyzed asymmetric formal [3 + 2] cycloaddition and subsequent central-to-axial chirality conversion by elimination of a carbamate. In addition, the practicality of this reaction had been verified by varieties of transformations towards functionalized atropisomers. An organocatalytic asymmetric cycloaddition–elimination cascade reaction of aryl enecarbamates with azonaphthalenes has been developed to access axially chiral heterobiaryls in excellent yields and enantioselectivities.![]()
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Affiliation(s)
- Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Wei-Ming Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Ru-Xia Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
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8
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Lei J, Xie W, Li J, Wu Y, Xie X. Synthesis of N‐Aryl‐ and N‐Alkenylhydrazides through C(sp
2
)−N Bond Construction. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100631] [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)
- Jian Lei
- College of Chemical Engineering and Materials Science Quanzhou Normal University 398 Donghai Avenue Quanzhou 362000 P. R. China
| | - Wenqian Xie
- College of Chemical Engineering and Materials Science Quanzhou Normal University 398 Donghai Avenue Quanzhou 362000 P. R. China
| | - Jing Li
- State Key Laboratory of Respiratory Disease Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 P. R. China
| | - Ya Wu
- College of Biological and Chemical Engineering Chongqing University of Education No.9 Xuefu Avenue Chongqing 400067 P. R. China
| | - Xiaolan Xie
- College of Chemical Engineering and Materials Science Quanzhou Normal University 398 Donghai Avenue Quanzhou 362000 P. R. China
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9
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Lei J, Gao H, Huang M, Liu X, Mao Y, Xie X. Copper-catalyzed stereoselective alkylhydrazination of alkynes. Chem Commun (Camb) 2020; 56:920-923. [DOI: 10.1039/c9cc07998j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An efficient copper-catalyzed stereoselective alkylhydrazination of alkynes, leading to tri-substituted (E)-alkenylhydrazines, has been developed.
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Affiliation(s)
- Jian Lei
- College of Chemical Engineering and Materials Science
- Quanzhou Normal University
- Quanzhou 362000
- P. R. China
| | - Huaxin Gao
- College of Chemical Engineering and Materials Science
- Quanzhou Normal University
- Quanzhou 362000
- P. R. China
| | - Miaoling Huang
- College of Chemical Engineering and Materials Science
- Quanzhou Normal University
- Quanzhou 362000
- P. R. China
| | - Xiao Liu
- Dongguan Institute for Food and Drug Control
- Dongguan 523808
- P. R. China
| | - Yangfan Mao
- College of Chemical Engineering and Materials Science
- Quanzhou Normal University
- Quanzhou 362000
- P. R. China
| | - Xiaolan Xie
- College of Chemical Engineering and Materials Science
- Quanzhou Normal University
- Quanzhou 362000
- P. R. China
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10
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Assembly of 7-carboxylate indoles via the Cu-catalyzed coupling of substituted 2-iodobenzoic acids and substituted hydrazines. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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11
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Son J, Reidl TW, Kim KH, Wink DJ, Anderson LL. Generation and Rearrangement of
N
,
O
‐Dialkenylhydroxylamines for the Synthesis of 2‐Aminotetrahydrofurans. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800908] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jongwoo Son
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Tyler W. Reidl
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Ki Hwan Kim
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Donald J. Wink
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Laura L. Anderson
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
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12
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Son J, Reidl TW, Kim KH, Wink DJ, Anderson LL. Generation and Rearrangement of N,O-Dialkenylhydroxylamines for the Synthesis of 2-Aminotetrahydrofurans. Angew Chem Int Ed Engl 2018; 57:6597-6600. [PMID: 29603566 DOI: 10.1002/anie.201800908] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/27/2018] [Indexed: 01/01/2023]
Abstract
A new diastereoselective route to 2-aminotetrahydrofurans has been developed from N,O-dialkenylhydroxylamines. These intermediates undergo a spontaneous C-C bond-forming [3,3]-sigmatropic rearrangement followed by a C-O bond-forming cyclization. A copper-catalyzed N-alkenylation of an N-Boc-hydroxylamine with alkenyl iodides, and a base-promoted addition of the resulting N-hydroxyenamines to an electron-deficient allene, provide modular access to these novel rearrangement precursors. The scope of this de novo synthesis of simple nucleoside analogues has been explored to reveal trends in diastereoselectivity and reactivity. In addition, a base-promoted ring-opening and Mannich reaction has been discovered to covert 2-aminotetrahydrofurans to cyclopentyl β-aminoacid derivatives or cyclopentenones.
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Affiliation(s)
- Jongwoo Son
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Tyler W Reidl
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Ki Hwan Kim
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Donald J Wink
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Laura L Anderson
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
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13
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Singh A, Mir NA, Choudhary S, Singh D, Sharma P, Kant R, Kumar I. One-pot sequential multicomponent reaction between in situ generated aldimines and succinaldehyde: facile synthesis of substituted pyrrole-3-carbaldehydes and applications towards medicinally important fused heterocycles. RSC Adv 2018; 8:15448-15458. [PMID: 35539447 PMCID: PMC9080005 DOI: 10.1039/c8ra01637b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 04/18/2018] [Indexed: 11/21/2022] Open
Abstract
An efficient sequential multi-component method for the synthesis of N-arylpyrrole-3-carbaldehydes has been developed. This reaction involved a proline-catalyzed direct Mannich reaction-cyclization sequence between succinaldehyde and in situ generated Ar/HetAr/indolyl-imines, followed by IBX-mediated oxidative aromatization in one-pot operation. The practical utility of this procedure is shown at gram-scale and the synthesis of diverse bioactive fused heterocyclic scaffolds such as pyrroloquinoline, pyrrolo-oxadiazole, dihydro pyrroloquinoline, and pyrrolo-phenanthridine.
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Affiliation(s)
- Anoop Singh
- Department of Chemistry, Birla Institute of Technology and Science Pilani 333 031 Rajasthan India
| | - Nisar A Mir
- Department of Chemistry, Birla Institute of Technology and Science Pilani 333 031 Rajasthan India
- Department of Chemistry Govt. Degree College for Pulwama-192301 J&K India
| | - Sachin Choudhary
- Department of Chemistry, Birla Institute of Technology and Science Pilani 333 031 Rajasthan India
| | - Deepika Singh
- Instrumentation Division, IIIM-CSIR Lab Jammu 180 001 India
| | - Preetika Sharma
- X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics, University of Jammu Jammu 180 006 India
| | - Rajni Kant
- X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics, University of Jammu Jammu 180 006 India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani 333 031 Rajasthan India
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14
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Majhail MK, Ylioja PM, Willis MC. Direct Synthesis of Highly Substituted Pyrroles and Dihydropyrroles Using Linear Selective Hydroacylation Reactions. Chemistry 2016; 22:7879-84. [PMID: 27106284 PMCID: PMC5074311 DOI: 10.1002/chem.201600311] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Indexed: 11/11/2022]
Abstract
Rhodium(I) catalysts incorporating small bite-angle diphosphine ligands, such as (Cy2 P)2 NMe or bis(diphenylphosphino)methane (dppm), are effective at catalysing the union of aldehydes and propargylic amines to deliver the linear hydroacylation adducts in good yields and with high selectivities. In situ treatment of the hydroacylation adducts with p-TSA triggers a dehydrative cyclisation to provide the corresponding pyrroles. The use of allylic amines, in place of the propargylic substrates, delivers functionalised dihydropyrroles. The hydroacylation reactions can also be combined in a cascade process with a Rh(I) -catalysed Suzuki-type coupling employing aryl boronic acids, providing a three-component assembly of highly substituted pyrroles.
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Affiliation(s)
- Manjeet K Majhail
- Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Paul M Ylioja
- Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Michael C Willis
- Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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15
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Yang X, Wang Y, Hu F, Kan X, Yang C, Liu J, Liu P, Zhang Q. Base-promoted intramolecular cyclization of N-alkyl, N-propargylic β-enaminones for the synthesis of polysubstituted pyrroles. RSC Adv 2016. [DOI: 10.1039/c6ra14897b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
An efficient, mild, metal-free, base-mediated intramolecular cyclization of N-alkyl, N-propargylic β-enaminones has been realized for the generation of polysubstituted pyrrole derivatives.
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Affiliation(s)
- Xiaobing Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Yang Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Fangzhong Hu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xiaoli Kan
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Chiming Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Jiahui Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Pei Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Qichun Zhang
- School of Materials Science Engineering
- Nanyang Technological University
- Singapore 637371
- Singapore
- Division of Chemistry and Biological Chemistry
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16
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Facile access to oxazolidin-2-imine, thiazolidin-2-imine and imidazolidin-2-imine derivatives bearing an exocyclic haloalkyliene via direct halocyclization between propargylamines, heterocumulenes and I2 (NBS). Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.080] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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17
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Weng J, Chen Y, Yue B, Xu M, Jin H. Synthesis of Polysubstituted Pyrroles from Activated Alkynes andN-Propargylamines through Base-Catalyzed Cascade Reaction. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500166] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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18
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Zheng Y, Wang Y, Zhou Z. Organocatalytic multicomponent synthesis of polysubstituted pyrroles from 1,2-diones, aldehydes and arylamines. Chem Commun (Camb) 2015; 51:16652-5. [DOI: 10.1039/c5cc05624a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We have developed an organocatalyzed three-component reaction of 1,2-diones, aldehydes and arylamines, which provides an efficient approach to access polysubstituted pyrroles.
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Affiliation(s)
- Yin Zheng
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering Nankai University
- Tianjin 300071
- P. R. China
| | - Youming Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering Nankai University
- Tianjin 300071
- P. R. China
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering Nankai University
- Tianjin 300071
- P. R. China
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19
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Schmidt D, Malakar CC, Beifuss U. 2,3-Dihalo-1-propenes as Building Blocks in Cu(I)-Catalyzed Domino Reactions: Efficient and Selective Synthesis of Furans. Org Lett 2014; 16:4862-5. [DOI: 10.1021/ol502371j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Dietmar Schmidt
- Bioorganische
Chemie, Institut
für Chemie, Universität Hohenheim, Garbenstraße 30, D-70599 Stuttgart, Germany
| | - Chandi C. Malakar
- Bioorganische
Chemie, Institut
für Chemie, Universität Hohenheim, Garbenstraße 30, D-70599 Stuttgart, Germany
| | - Uwe Beifuss
- Bioorganische
Chemie, Institut
für Chemie, Universität Hohenheim, Garbenstraße 30, D-70599 Stuttgart, Germany
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