1
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Takahashi H, Nagashima Y, Tanaka K. Rhodium(III)‐Catalyzed Oxidative Intramolecular 1,1‐Oxyamination of Alkenes with Protected Amino Acids to Produce Oxazoloisoindole‐2,5‐diones. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100143] [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)
- Hiroto Takahashi
- Department of Chemical Science and Engineering Tokyo Institute of Technology O-okayama, Meguro-ku 152-8550 Tokyo Japan
| | - Yuki Nagashima
- Department of Chemical Science and Engineering Tokyo Institute of Technology O-okayama, Meguro-ku 152-8550 Tokyo Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering Tokyo Institute of Technology O-okayama, Meguro-ku 152-8550 Tokyo Japan
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2
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Fang R, Zhang Y, Kirillov AM, Yang L. The DFT Quest for Possible Reaction Pathways, Catalytic Species, and Regioselectivity in the InCl 3-Catalyzed Cycloaddition of N-Tosyl Formaldimine with Olefins or Allenes. J Org Chem 2020; 85:3676-3688. [PMID: 31977213 DOI: 10.1021/acs.joc.9b03309] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The present work focuses on a theoretical investigation of the plausible mechanism, determination of catalytically active species, and understanding of the regioselectivity in the InCl3-catalyzed cycloaddition of N-tosyl formaldimine with alkenes or allenes. InCl3 and InCl2+ coordinated by dichloroethane (InCl2+-DCE) were investigated as model catalytic systems. DFT data supported that InCl2+-DCE represent the plausible in situ generated catalytic species. The catalytic cycle starts from the coordination of N-tosyl formaldimine to InCl2+-DCE, generating an In-complexed iminium intermediate. This then undergoes intermolecular reaction (aza-Prins) with alkene substrate to form a carbocation intermediate, which is chemoselectively attacked by the second N-tosyl formaldimine molecule to form a formaldiminium intermediate. In a final step, this intermediate undergoes the ring closure, leading to hexahydropyrimidine along with the regeneration of catalyst. In addition, our DFT results indicate that N-tosyl formaldimine not only acts as a reactant but also accelerates the 1,3-H-shift as a proton acceptor, giving an experimentally observed allylamide product. Also, the "iminium/alkene/imine" path was supported by calculation results for diastereoselective [2 + 2 + 2] reaction using an internal alkene. Finally, the regioselectivity of the InCl3-catalyzed cycloaddition using allenes along with N-tosyl formaldimine was also analyzed.
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Affiliation(s)
- Ran Fang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.,State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Youchang Zhang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Alexander M Kirillov
- Centro de Quimica Estrutural, Complexo I, Instituto Superior Tecnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.,Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow, 117198, Russia
| | - Lizi Yang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.,State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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3
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Chen Y. Advances in the Synthesis of Methylated Products through Indirect Approaches. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yantao Chen
- Medicinal Chemistry, Research and Early DevelopmentCardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca 43183 Gothenburg Sweden
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4
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Li J, Ye Y, Zhang Y. Cycloaddition/annulation strategies for the construction of multisubstituted pyrrolidines and their applications in natural product synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo01077j] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Pyrrolidines are privileged substructures of numerous bioactive natural products and drugs.
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Affiliation(s)
- Jundong Li
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yilin Ye
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yandong Zhang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
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5
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Erb W, Levanen G, Roisnel T, Dorcet V. Application of the Curtius rearrangement to the synthesis of 1′-aminoferrocene-1-carboxylic acid derivatives. NEW J CHEM 2018. [DOI: 10.1039/c7nj05020h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The shortest synthesis of N-protected 1′-aminoferrocene-1-carboxylic acid from readily available ferrocene-1,1′-dicarboxylic acid is reported.
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Affiliation(s)
- William Erb
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Gael Levanen
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Thierry Roisnel
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Vincent Dorcet
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
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6
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Zhou H, Chaminda Lakmal HH, Baine JM, Valle HU, Xu X, Cui X. Catalytic [2 + 2 + 2] cycloaddition with indium(iii)-activated formaldimines: a practical and selective access to hexahydropyrimidines and 1,3-diamines from alkenes. Chem Sci 2017; 8:6520-6524. [PMID: 28989677 PMCID: PMC5628582 DOI: 10.1039/c7sc02576a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 07/20/2017] [Indexed: 02/02/2023] Open
Abstract
Catalytic [2 + 2 + 2] cycloaddition with three double bond systems has been developed for construction of hexahydropyrimidine and 1,3-diamine derivatives.
Catalytic [2 + 2 + 2] cycloaddition with imines has, for the first time, been developed as a practical and selective approach for direct construction of hexahydropyrimidine derivatives from various alkenes. With formaldimines as reagents and simple InCl3 as the catalyst, this ionic [2 + 2 + 2] approach is applicable for a wide scope of alkenes and allenes with various electronic and steric properties, as well as substitution patterns. Through facile hydrolysis of the resulting hexahydropyrimidines, this catalytic process also provides a new synthetic strategy for the aminomethylamination of alkenes and allenes to practically access 1,3-diamine derivatives.
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Affiliation(s)
- Hui Zhou
- Department of Chemistry , Mississippi State University , Mississippi State , MS 39762 , USA .
| | | | - Jonathan M Baine
- Department of Chemistry , Mississippi State University , Mississippi State , MS 39762 , USA .
| | - Henry U Valle
- Department of Chemistry , Mississippi State University , Mississippi State , MS 39762 , USA .
| | - Xue Xu
- Department of Chemistry , Mississippi State University , Mississippi State , MS 39762 , USA .
| | - Xin Cui
- Department of Chemistry , Mississippi State University , Mississippi State , MS 39762 , USA .
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7
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Kandepedu N, Abrunhosa-Thomas I, Troin Y. Stereoselective strategies for the construction of polysubstituted piperidinic compounds and their applications in natural products’ synthesis. Org Chem Front 2017. [DOI: 10.1039/c7qo00262a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An abridged and far-reaching review communication on the construction of the polysubstituted piperidinic core using diverse methodologies for the benefit of organic chemists interested in the total synthesis of biologically active compounds.
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Affiliation(s)
- Nishanth Kandepedu
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - Isabelle Abrunhosa-Thomas
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - Yves Troin
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
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8
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Kawamura MY, Talero AG, Santiago JV, Garambel-Vilca E, Rosset IG, Burtoloso ACB. Six-Step Syntheses of (-)-1-Deoxyaltronojirimycin and (+)-1-Deoxymannonojirimycin from N-Z-O-TBDPS-l-serinal. J Org Chem 2016; 81:10569-10575. [PMID: 27501028 DOI: 10.1021/acs.joc.6b01575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Highly stereoselective six-step syntheses of (-)-1-deoxyaltronojirimycin (altro-DNJ) and (+)-1-deoxymannojirimycin (manno-DNJ) from N-Cbz-O-TBDPS-l-serinal are described. Key transformations involve a two-step preparation of a functionalized dihydropyridin-3-one as a common intermediate followed by Luche reduction and dihydroxylation (for altro-DNJ). The same sequence employing an epoxidation/epoxide opening in place of dihydroxylation furnishes manno-DNJ.
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Affiliation(s)
- Meire Y Kawamura
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Alexánder G Talero
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - João V Santiago
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Edson Garambel-Vilca
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Isac G Rosset
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Antonio C B Burtoloso
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
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9
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Yadav NN, Choi J, Ha HJ. One-pot multiple reactions: asymmetric synthesis of 2,6-cis-disubstituted piperidine alkaloids from chiral aziridine. Org Biomol Chem 2016; 14:6426-34. [PMID: 27189444 DOI: 10.1039/c6ob00806b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A divergent, new, and highly stereoselective synthesis of cis-2,6-disubstituted piperidine natural products including isosolenopsins, deoxocassine, and spectaline was achieved from chiral aziridine decorated with appropriate alkyl chains for isosolenopsins or alkynyl groups for deoxocassine and spectaline at C2. The characteristic feature of this synthesis is one-pot sequential reactions under atmospheric hydrogen including the reduction of alkyne (for deoxocassine and spectaline), reductive ring-opening of aziridine, debenzylation, and intramolecular reductive amination in high yields. The prerequisite aziridines were elaborated from commercially available (2S)-hydroxymethylaziridine through oxidation, Wittig olefination, and the Grignard reaction for isosolenopsins or substrate-controlled lithium alkynylate addition for deoxocassine and spectaline.
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Affiliation(s)
- Nagendra Nath Yadav
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, Kyunggi-Do 17035, Korea.
| | - Jihye Choi
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, Kyunggi-Do 17035, Korea.
| | - Hyun-Joon Ha
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, Kyunggi-Do 17035, Korea.
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10
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Affiliation(s)
- Wenzhen Fu
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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11
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Domínguez G, Pérez-Castells J. Alkenes in [2+2+2] Cycloadditions. Chemistry 2016; 22:6720-39. [DOI: 10.1002/chem.201504987] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Indexed: 12/21/2022]
Affiliation(s)
- Gema Domínguez
- Chemistry and Biochemistry department; Universidad San Pablo CEU; Urb. Montepríncipe. Boadilla del Monte. E28668 Madrid Spain
| | - Javier Pérez-Castells
- Chemistry and Biochemistry department; Universidad San Pablo CEU; Urb. Montepríncipe. Boadilla del Monte. E28668 Madrid Spain
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12
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N V G M, Dyapa R, Pansare SV. Formal Synthesis of (+)-Lasubine II and (-)-Subcosine II via Organocatalytic Michael Addition of a Ketone to an α-Nitrostyrene. Org Lett 2015; 17:5312-5. [PMID: 26492086 DOI: 10.1021/acs.orglett.5b02677] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The first examples of an organocatalytic Michael addition of a ketone to in situ generated α-nitrostyrenes are reported. A suitably functionalized γ-nitroketone obtained from the organocatalyzed Michael addition was converted into (+)-2-epi-lasubine II, the immediate synthetic precursor of (+)-lasubine II and (-)-subcosine II (enantiomers of the natural quinolizidine alkaloids). Two of the three stereocenters in (+)-2-epi-lasubine II are set by the Michael reaction.
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Affiliation(s)
- Moorthy N V G
- Department of Chemistry, Memorial University , St. John's, Newfoundland, Canada A1B 3X7
| | - Rajendar Dyapa
- Department of Chemistry, Memorial University , St. John's, Newfoundland, Canada A1B 3X7
| | - Sunil V Pansare
- Department of Chemistry, Memorial University , St. John's, Newfoundland, Canada A1B 3X7
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13
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Kotha S, Sreevani G. Molybdenum hexacarbonyl: air stable catalyst for microwave assisted intermolecular [2+2+2] co-trimerization involving propargyl halides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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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.
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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
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15
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Chen S, Mercado BQ, Bergman RG, Ellman JA. Regio- and Diastereoselective Synthesis of Highly Substituted, Oxygenated Piperidines from Tetrahydropyridines. J Org Chem 2015; 80:6660-8. [PMID: 26098485 PMCID: PMC4496584 DOI: 10.1021/acs.joc.5b00816] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diastereoselective epoxidation and regioselective ring-opening methods were developed for the synthesis of densely substituted, oxygenated piperidines from two classes of tetrahydropyridines with distinct stereochemical displays of functionalities. A new and practical in situ prepared epoxidation reagent was developed for the diastereoselective epoxidation of one class of sterically hindered tetrahydropyridines. The novel bifunctional epoxidation reagent, 2-carboperoxy-3,4,5,6-tetrafluorobenzoic acid, was designed to incorporate highly reactive percarboxy acid and pendant carboxylic acid groups, which through hydrogen bonding to the amino group successfully overrode steric effects and directed epoxidation to occur at the more hindered face of the tetrahydropyridine. Nucleophilic ring-opening of the epoxides with water, alcohols, and HF proceeded with high regioselectivity, affording piperidinol products with adjacent tetrasubstituted carbons.
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Affiliation(s)
- Shuming Chen
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
| | - Brandon Q. Mercado
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
| | - Robert G. Bergman
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720-1416 (USA) and Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (USA)
| | - Jonathan A. Ellman
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
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Mesganaw T, Ellman JA. Convergent Synthesis of Diverse Tetrahydropyridines via Rh(I)-Catalyzed C-H Functionalization Sequences. Org Process Res Dev 2014; 18:1097-1104. [PMID: 25288871 PMCID: PMC4183667 DOI: 10.1021/op500224x] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Indexed: 01/09/2023]
Abstract
![]()
A Rh-catalyzed
C–H bond activation/alkenylation/electrocyclization
cascade reaction provides diverse 1,2-dihydropyridines from simple
and readily available precursors. The reaction can be carried out
at low (<1%) Rh-catalyst loadings, and the use of the robust, air-stable
Rh precatalyst, [RhCl(cod)]2, enables the cascade reaction
to be easily performed on the benchtop. The 1,2-dihydropyridine products
serve as extremely versatile synthetic intermediates for further elaboration
often without isolation. The addition of electrophiles under kinetic
or thermodynamic conditions provides a wide range of iminiums. Subsequent
addition of a nucleophile then generates a diverse array of differently
substituted piperidine products. Additionally, [3 + 2] and [4 + 2]
cycloadditions of the 1,2-dihydropyridine intermediate provides access
to bridged bicyclic structures such as tropanes and isoquinuclidines.
These concise reaction sequences enable the formation of highly substituted
piperidines in synthetically useful yields with excellent diastereoselectivity.
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Affiliation(s)
- Tehetena Mesganaw
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
| | - Jonathan A Ellman
- Department of Chemistry, Yale University , New Haven, Connecticut 06520, United States
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White NA, Ozboya KE, Flanigan DM, Rovis T. Rapid Construction of (-)-Paroxetine and (-)-Femoxetine via N-Heterocyclic Carbene Catalyzed Homoenolate Addition to Nitroalkenes. ASIAN J ORG CHEM 2014; 3:442-444. [PMID: 25485210 PMCID: PMC4251551 DOI: 10.1002/ajoc.201402031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Indexed: 01/17/2023]
Abstract
A concise enantioselective synthesis of (-)-paroxetine (Paxil) and (-)-femoxetine has been achieved. Key to these syntheses is a N-heterocyclic carbene catalyzed homoenolate addition to a nitroalkene followed by in situ reduction of the nitro-group to rapidly access δ-lactams.
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Affiliation(s)
- Nicholas A. White
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA), Fax: (+)
| | - Kerem E. Ozboya
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA), Fax: (+)
| | - Darrin M. Flanigan
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA), Fax: (+)
| | - Tomislav Rovis
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA), Fax: (+)
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Duttwyler S, Chen S, Lu C, Mercado BQ, Bergman RG, Ellman JA. Regio- and stereoselective 1,2-dihydropyridine alkylation/addition sequence for the synthesis of piperidines with quaternary centers. Angew Chem Int Ed Engl 2014; 53:3877-80. [PMID: 24604837 DOI: 10.1002/anie.201310517] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Indexed: 11/10/2022]
Abstract
The first example of C alkylation of 1,2-dihydropyridines with alkyl triflates and Michael acceptors was developed to introduce quaternary carbon centers with high regio- and diastereoselectivity. Hydride or carbon nucleophile addition to the resultant iminium ion also proceeded with high diastereoselectivity. Carbon nucleophile addition results in an unprecedented level of substitution to provide piperidine rings with adjacent tetrasubstituted carbon atoms.
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Affiliation(s)
- Simon Duttwyler
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
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Duttwyler S, Chen S, Lu C, Mercado BQ, Bergman RG, Ellman JA. Regio- and Stereoselective 1,2-Dihydropyridine Alkylation/Addition Sequence for the Synthesis of Piperidines with Quaternary Centers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Hara J, Ishida M, Kobayashi M, Noguchi K, Tanaka K. Highly Chemo-, Regio-, and Enantioselective Rhodium-Catalyzed Cross-Cyclotrimerization of Two Different Alkynes with Alkenes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310336] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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22
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Highly Chemo-, Regio-, and Enantioselective Rhodium-Catalyzed Cross-Cyclotrimerization of Two Different Alkynes with Alkenes. Angew Chem Int Ed Engl 2014; 53:2956-9. [DOI: 10.1002/anie.201310336] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Indexed: 11/07/2022]
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Jäkel M, Qu J, Schnitzer T, Helmchen G. Addition of Organometallic Reagents to ChiralN‐Methoxylactams: Enantioselective Syntheses of Pyrrolidines and Piperidines. Chemistry 2013; 19:16746-55. [DOI: 10.1002/chem.201302735] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Indexed: 11/12/2022]
Affiliation(s)
- Mascha Jäkel
- Organisch‐Chemisches Institut, Ruprecht‐Karls‐Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐544205
| | - Jianping Qu
- Organisch‐Chemisches Institut, Ruprecht‐Karls‐Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐544205
| | - Tobias Schnitzer
- Organisch‐Chemisches Institut, Ruprecht‐Karls‐Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐544205
| | - Günter Helmchen
- Organisch‐Chemisches Institut, Ruprecht‐Karls‐Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐544205
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Fernández de la Pradilla R, Simal C, Bates RH, Viso A, Infantes L. Sulfoxide-Directed Enantioselective Synthesis of Functionalized Tetrahydropyridines. Org Lett 2013; 15:4936-9. [DOI: 10.1021/ol402141d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Roberto Fernández de la Pradilla
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Instituto de Química Física Rocasolano, IQFR-CSIC, Serrano 119, 28006 Madrid, Spain
| | - Carmen Simal
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Instituto de Química Física Rocasolano, IQFR-CSIC, Serrano 119, 28006 Madrid, Spain
| | - Robert H. Bates
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and 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, and Instituto de Química Física Rocasolano, IQFR-CSIC, Serrano 119, 28006 Madrid, Spain
| | - Lourdes Infantes
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain, and Instituto de Química Física Rocasolano, IQFR-CSIC, Serrano 119, 28006 Madrid, Spain
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