1
|
Microwave assisted rapid synthesis of bicyclo aza-sulfone derivatives from aldehydes via aldoxime formation followed by Michael addition-1,3-dipolar cycloaddition with divinyl sulfone in one-pot. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
2
|
Lapetaje JE, Young CM, Shu C, Smith AD. Isothiourea-catalyzed formal enantioselective conjugate addition of benzophenone imines to β-fluorinated α,β-unsaturated esters. Chem Commun (Camb) 2022; 58:6886-6889. [PMID: 35635248 DOI: 10.1039/d2cc01936a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The isothiourea-catalyzed formal enantioselective conjugate addition of 2-hydroxybenzophenone imine derivatives to α,β-unsaturated para-nitrophenyl esters has been developed. Investigations of the scope and limitations of this procedure showed that β-electron withdrawing substituents within the α,β-unsaturated ester component are required for good product yield, giving rise to a range of β-imino ester and amide derivatives in moderate to good isolated yields with excellent enantioselectivity (20 examples, up to 81% yield and 97 : 3 er).
Collapse
Affiliation(s)
- Jerson E Lapetaje
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Claire M Young
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Chang Shu
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| |
Collapse
|
3
|
Li M, Zhang J, Zou Y, Zhou F, Zhang Z, Zhang W. Asymmetric hydrogenation for the synthesis of 2-substituted chiral morpholines. Chem Sci 2021; 12:15061-15066. [PMID: 34909146 PMCID: PMC8612400 DOI: 10.1039/d1sc04288b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/26/2021] [Indexed: 12/17/2022] Open
Abstract
Asymmetric hydrogenation of unsaturated morpholines has been developed by using a bisphosphine-rhodium catalyst bearing a large bite angle. With this approach, a variety of 2-substituted chiral morpholines could be obtained in quantitative yields and with excellent enantioselectivities (up to 99% ee). The hydrogenated products could be transformed into key intermediates for bioactive compounds. 2-Substituted chiral morpholines were synthesized via a newly developed asymmetric hydrogenation of dehydromorpholines catalyzed by a bisphosphine–rhodium complex bearing a large bite angle.![]()
Collapse
Affiliation(s)
- Mingxu Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Jian Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yashi Zou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Fengfan Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zhenfeng Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China .,Frontier Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| |
Collapse
|
4
|
Sánchez-Roselló M, Escolano M, Gaviña D, Del Pozo C. Two Decades of Progress in the Asymmetric Intramolecular aza-Michael Reaction. CHEM REC 2021; 22:e202100161. [PMID: 34415097 DOI: 10.1002/tcr.202100161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/22/2021] [Accepted: 08/04/2021] [Indexed: 11/08/2022]
Abstract
The asymmetric intramolecular aza-Michael reaction (IMAMR) is a very convenient strategy for the generation of heterocycles bearing nitrogen-substituted stereocenters. Due to the ubiquitous presence of these skeletons in natural products, the IMAMR has found widespread applications in the total synthesis of alkaloids and biologically relevant compounds. The development of asymmetric versions of the IMAMR are quite recent, most of them reported in this century. The fundamental advances in this field involve the use of organocatalysts. Chiral imidazolidinones, diaryl prolinol derivatives, Cinchone-derived primary amines and quaternary ammonium salts, and BINOL-derived phosphoric acids account for the success of those methodologies. Moreover, the use of N-sulfinyl imines with a dual role, as nitrogen nucleophiles and as chiral auxiliaries, appeared as a versatile mode of performing the asymmetric IMAMR.
Collapse
Affiliation(s)
- María Sánchez-Roselló
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Marcos Escolano
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Daniel Gaviña
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Carlos Del Pozo
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| |
Collapse
|
5
|
Das S, Goswami G, Halder S, Ghorai MK. Domino imino-aldol-aza-Michael and imino-aldol-aza-Michael-imino-aldol reactions: Diastereoselective synthesis of highly functionalized 2,6-disubstituted piperidines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
6
|
Krištofíková D, Modrocká V, Mečiarová M, Šebesta R. Green Asymmetric Organocatalysis. CHEMSUSCHEM 2020; 13:2828-2858. [PMID: 32141177 DOI: 10.1002/cssc.202000137] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Asymmetric organocatalysis is becoming one of the main tools for the synthesis of chiral compounds that are needed as medicines, crop protection agents, and other bioactive molecules. It can be effectively combined with various green chemistry methodologies. Intensification techniques, such as ball milling, flow, high pressure, or light, bring not only higher yields, faster reactions, and easier product isolation, but also new reactivities. More sustainable reaction media, such as ionic liquids, deep eutectic solvents, green solvent alternatives, and water, also considerably enhance the sustainability profile of many organocatalytic reactions.
Collapse
Affiliation(s)
- Dominika Krištofíková
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Viktória Modrocká
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| |
Collapse
|
7
|
Vinogradov MG, Turova OV, Zlotin SG. Recent advances in the asymmetric synthesis of pharmacology-relevant nitrogen heterocycles via stereoselective aza-Michael reactions. Org Biomol Chem 2019; 17:3670-3708. [DOI: 10.1039/c8ob03034k] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this review, recent applications of a stereoselective aza-Michael reaction for asymmetric synthesis of naturally occurring N-containing heterocyclic scaffolds and their usefulness to pharmacology are summarized.
Collapse
Affiliation(s)
- Maxim G. Vinogradov
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Olga V. Turova
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| |
Collapse
|
8
|
Albano G, Aronica LA. Potentiality and Synthesis of O- and N-Heterocycles: Pd-Catalyzed Cyclocarbonylative Sonogashira Coupling as a Valuable Route to Phthalans, Isochromans, and Isoindolines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701041] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale; University of Pisa; Via G. Moruzzi 13 56124 Pisa Italy
| | - Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Industriale; University of Pisa; Via G. Moruzzi 13 56124 Pisa Italy
| |
Collapse
|
9
|
Simón L, Paton RS. Phosphazene Catalyzed Addition to Electron-Deficient Alkynes: The Importance of Nonlinear Allenyl Intermediates upon Stereoselectivity. J Org Chem 2017; 82:3855-3863. [DOI: 10.1021/acs.joc.7b00540] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Luis Simón
- Facultad de Ciencias
Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, Salamanca E37004, Spain
| | - Robert S. Paton
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| |
Collapse
|
10
|
Wang G, Tang Y, Zhang Y, Liu X, Lin L, Feng X. Enantioselective Synthesis of N-H-Free 1,5-Benzothiazepines. Chemistry 2016; 23:554-557. [PMID: 27862459 DOI: 10.1002/chem.201605127] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Indexed: 11/10/2022]
Abstract
An enantioselective sulfa-Michael-cyclization reaction was developed for the synthesis of 1,5-benzothiazepines with versatile pharmacological activities. The reaction between 2-aminothiophenol and α,β-unsaturated pyrazoleamides gave direct access to N-H-free 1,5-benzothiazepines in the presence of a chiral N,N'-dioxide/Yb(OTf)3 complex. Excellent enantioselectivities (up to 96 % ee) and high yields (up to 99 %) were obtained for a broad range of substrates under mild reaction conditions. This method provided a facile approach to the antidepressant drug (R)-(-)-Thiazesim.
Collapse
Affiliation(s)
- Guojin Wang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| | - Yu Tang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| | - Yu Zhang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P.R. China
| |
Collapse
|
11
|
Kohrt S, Santschi N, Cvengroš J. Accessing N-Stereogenicity through a Double Aza-Michael Reaction: Mechanistic Insights. Chemistry 2016; 22:390-403. [PMID: 26767587 DOI: 10.1002/chem.201502670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Indexed: 11/10/2022]
Abstract
Further development of the chemistry and applications of chiral compounds that possess configurationally stable stereogenic nitrogen atoms is hampered by the lack of efficient strategies to access such compounds in an enantiomerically pure form. Esters of propiolic acid and chiral alcohols were evaluated as cheap and readily available Michael acceptors in a diastereoselective synthesis of N-stereogenic compounds by means of a double aza-Michael conjugate addition. Diastereomeric ratios of up to 74:26 and high yields were achieved with (-)-menthyl propiolate as a substrate. Furthermore, a detailed mechanistic investigation was undertaken to shed some light on the course of this domino transformation. Kinetic studies revealed that the protic-solvent additive acts as a Brønsted acid and activates the ester toward the initial attack of the tetrahydrodiazocine partner. Conversely, acidic conditions proved unfavorable during the final cyclization step that provides the product.
Collapse
Affiliation(s)
- Sonja Kohrt
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich (Switzerland).,Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster (Germany)
| | - Nico Santschi
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich (Switzerland).,Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster (Germany)
| | - Ján Cvengroš
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich (Switzerland).
| |
Collapse
|
12
|
Desimoni G, Faita G, Quadrelli P. Enantioselective Catalytic Reactions with N-Acyliden Penta-atomic Aza-heterocycles. Heterocycles as Masked Bricks To Build Chiral Scaffolds. Chem Rev 2015; 115:9922-80. [DOI: 10.1021/acs.chemrev.5b00097] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giovanni Desimoni
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Giuseppe Faita
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Paolo Quadrelli
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| |
Collapse
|
13
|
Simal C, Bates RH, Ureña M, Giménez I, Koutsou C, Infantes L, Fernández de la Pradilla R, Viso A. Synthesis of Enantiopure 3-Hydroxypiperidines from Sulfinyl Dienyl Amines by Diastereoselective Intramolecular Cyclization and [2,3]-Sigmatropic Rearrangement. J Org Chem 2015; 80:7674-92. [PMID: 26162504 DOI: 10.1021/acs.joc.5b01307] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The highly diastereoselective base-promoted intramolecular cyclization of a variety of enantiopure sulfinyl dienyl amines provides novel sulfinyl tetrahydropyridines that are readily converted to 3-hydroxy tetrahydropyridines via sigmatropic rearrangement. The influence of N- and C- substituents on the process has been studied. Procedures to shorten the sequence such as the tandem cyclization followed by [2,3]-sigmatropic rearrangement, as well as cyclization of the free amine, under Boc- or ArSO- deprotection conditions have been examined. Good to excellent levels of selectivity are generally observed for the reported transformations (dr: 75/25 to >98/2). A novel protocol to access substituted amino dienyl sulfoxides is also reported.
Collapse
Affiliation(s)
- Carmen Simal
- †Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Robert H Bates
- †Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Mercedes Ureña
- †Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Irene Giménez
- †Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Christina Koutsou
- †Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Lourdes Infantes
- ‡Instituto de Química Física Rocasolano, IQFR-CSIC, Serrano 119, 28006 Madrid, Spain
| | | | - Alma Viso
- †Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| |
Collapse
|
14
|
Xie Y, Yu C, Li T, Tu S, Yao C. An NHC-catalyzed in situ activation strategy to β-functionalize saturated carboxylic acid: an enantioselective formal [3+2] annulation for spirocyclic oxindolo-γ-butyrolactones. Chemistry 2015; 21:5355-9. [PMID: 25689040 DOI: 10.1002/chem.201500345] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Indexed: 01/07/2023]
Abstract
An in situ NHC-catalyzed activation strategy to β-functionalize saturated carboxylic acid was developed. This asymmetric formal [3+2] annulation could deliver spirocyclic oxindolo-γ-butyrolactones from saturated carboxylic acid and isatin in good yields with high to excellent enantioselectivities. The easy availability of the starting materials, direct installation of functional units at unreactive carbon atom and the convergent assembly make this protocol attractive in the field of organic synthesis.
Collapse
Affiliation(s)
- Yuanwei Xie
- School of Chemistry and Chemical Engineering, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116 (P.R. China)
| | | | | | | | | |
Collapse
|