1
|
Dickinson CF, Yap GPA, Tius MA. Anion-accelerated asymmetric Nazarov cyclization: access to vicinal all-carbon quaternary stereocenters. Org Biomol Chem 2023; 21:5014-5020. [PMID: 37265330 PMCID: PMC10372926 DOI: 10.1039/d3ob00735a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have developed a catalytic asymmetric Nazarov cyclization that results in the formation of two contiguous all-carbon quaternary stereocenters in high yield with excellent levels of asymmetric induction. This method requires no catalyst recognition elements in the starting materials that are simple diketoesters. Geometrically pure E or Z isomers of the starting material lead to diastereomerically pure products with high enantioselectivity because the species that undergoes cyclization is a rhodium enolate that is configurationally stable.
Collapse
Affiliation(s)
- Cody F Dickinson
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA.
| | - Glenn P A Yap
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Marcus A Tius
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA.
| |
Collapse
|
2
|
Cheng Q, Yan W, Li T, Jiao Y, Tang Z. Insights into the regioselectivity and diastereoselectivity of the Nazarov cyclization of 3-alkenyl-2-indolylmethanol with tryptophol. Org Chem Front 2023. [DOI: 10.1039/d2qo01896a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Density functional theory calculations of Nazarov cyclizations showed that 3-alkenyl-2-indolylmethanol and tryptophol formed binary and ternary complexes, respectively, in the presence and absence of H2O to produce C–N and C–C products.
Collapse
Affiliation(s)
- Qi Cheng
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Wenxin Yan
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Tian Li
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Yinchun Jiao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Zilong Tang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, 411201, China
| |
Collapse
|
3
|
Wang Q, Pietropaolo A, Fortino M, Song Z, Bando M, Naga N, Nakano T. Photo racemization of 2,2'-dihydroxy-1,1'-binaphthyl derivatives. Chirality 2021; 34:317-324. [PMID: 34939234 DOI: 10.1002/chir.23400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 11/08/2022]
Abstract
Photo racemization of 2,2'-dihydroxy-1,1'-binaphthyl (BINOL) and its monomethyl ether, monobutyl ether, and dimethyl ether was studied by means of circularly dichroism spectra, chiral HPLC, and theoretical calculations of rotation energy barriers. Racemization was fastest for BINOL and about one seventh as fast for the monomethyl and monobutyl ethers while it was too slow to be detected for the dimethyl ether under the present conditions.
Collapse
Affiliation(s)
- Qingyu Wang
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Japan
| | - Adriana Pietropaolo
- Dipartimento di Scienze della Salute, Università di Catanzaro, Catanzaro, Italy
| | - Mariagrazia Fortino
- Dipartimento di Scienze della Salute, Università di Catanzaro, Catanzaro, Italy
| | - Zhiyi Song
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Japan
| | - Masayoshi Bando
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Japan
| | - Naofumi Naga
- Department of Applied Chemistry, College of Engineering, Shibaura Institute of Technology, Tokyo, Japan
| | - Tamaki Nakano
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Japan.,Integrated Research Consortium on Chemical Sciences (IRCCS), Institute for Catalysis, Hokkaido University, Sapporo, Japan
| |
Collapse
|
4
|
Caballero-García G, Goodman JM. N-Triflylphosphoramides: highly acidic catalysts for asymmetric transformations. Org Biomol Chem 2021; 19:9565-9618. [PMID: 34723293 DOI: 10.1039/d1ob01708j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
N-Triflylphosphoramides (NTPA), have become increasingly popular catalysts in the development of enantioselective transformations as they are stronger Brønsted acids than the corresponding phosphoric acids (PA). Their highly acidic, asymmetric active site can activate difficult, unreactive substrates. In this review, we present an account of asymmetric transformations using this type of catalyst that have been reported in the past ten years and we classify these reactions using the enantio-determining step as the key criterion. This compendium of NTPA-catalysed reactions is organised into the following categories: (1) cycloadditions, (2) electrocyclisations, polyene and related cyclisations, (3) addition reactions to imines, (4) electrophilic aromatic substitutions, (5) addition reactions to carbocations, (6) aldol and related reactions, (7) addition reactions to double bonds, and (8) rearrangements and desymmetrisations. We highlight the use of NTPA in total synthesis and suggest mnemonics which account for their enantioselectivity.
Collapse
Affiliation(s)
| | - Jonathan M Goodman
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
| |
Collapse
|
5
|
Yadav A, Kumar D, Mishra MK, Deeksha, Tripathi CB. Catalytic Enantioselective Synthesis of Aryl–Methyl Organophosphorus Compounds. J Org Chem 2021; 86:2000-2011. [DOI: 10.1021/acs.joc.0c02675] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Arun Yadav
- Medicinal and Process Chemistry Division, CSIR−Central Drug Research Institute, Lucknow 226031, India
- Chemical Sciences Division, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Dileep Kumar
- Medicinal and Process Chemistry Division, CSIR−Central Drug Research Institute, Lucknow 226031, India
| | - Manish Kumar Mishra
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Deeksha
- Medicinal and Process Chemistry Division, CSIR−Central Drug Research Institute, Lucknow 226031, India
| | - Chandra Bhushan Tripathi
- Medicinal and Process Chemistry Division, CSIR−Central Drug Research Institute, Lucknow 226031, India
- Chemical Sciences Division, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
6
|
Nejrotti S, Mannu A, Blangetti M, Baldino S, Fin A, Prandi C. Optimization of Nazarov Cyclization of 2,4-Dimethyl-1,5-diphenylpenta-1,4-dien-3-one in Deep Eutectic Solvents by a Design of Experiments Approach. Molecules 2020; 25:E5726. [PMID: 33291596 PMCID: PMC7730498 DOI: 10.3390/molecules25235726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 12/19/2022] Open
Abstract
The unprecedented Nazarov cyclization of a model divinyl ketone using phosphonium-based Deep Eutectic Solvents as sustainable non-innocent reaction media is described. A two-level full factorial Design of Experiments was conducted for elucidating the effect of the components of the eutectic mixture and optimizing the reaction conditions in terms of temperature, time, and substrate concentration. In the presence of the Deep Eutectic Solvent (DES) triphenylmethylphosphonium bromide/ethylene glycol, it was possible to convert more than 80% of the 2,4-dimethyl-1,5-diphenylpenta-1,4-dien-3-one, with a specific conversion, into the cyclopentenone Nazarov derivative of 62% (16 h, 60 °C). For the reactions conducted in the DES triphenylmethylphosphonium bromide/acetic acid, quantitative conversions were obtained with percentages of the Nazarov product above 95% even at 25 °C. Surface Responding Analysis of the optimized data furnished a useful tool to determine the best operating conditions leading to quantitative conversion of the starting material, with complete suppression of undesired side-reactions, high yields and selectivity. After optimization, it was possible to convert more than 90% of the model substrate into the desired cyclopentenone with cis percentages up to 77%. Experimental validation of the implemented model confirmed the robustness and the suitability of the procedure, leading to possible further extension to this specific combination of experimental designs to other substrates or even to other synthetic processes of industrial interest.
Collapse
Affiliation(s)
- Stefano Nejrotti
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
| | - Alberto Mannu
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
| | - Marco Blangetti
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
| | - Salvatore Baldino
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
| | - Andrea Fin
- Department of Drug Science and Technology, University of Turin, Via Pietro Giuria, 9-I-10125 Torino, Italy;
| | - Cristina Prandi
- Department of Chemistry, University of Turin, Via Pietro Giuria, 7-I-10125 Torino, Italy; (S.N.); (S.B.); (C.P.)
| |
Collapse
|
7
|
Aegurla B, Jarwal N, Peddinti RK. Denitrative imino-diaza-Nazarov cyclization: synthesis of pyrazoles. Org Biomol Chem 2020; 18:6100-6107. [PMID: 32785358 DOI: 10.1039/d0ob01200a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An iodine-catalyzed denitrative imino-diaza-Nazarov cyclization (DIDAN) methodology has been developed for the synthesis of pyrazoles with high to excellent yields by using α-nitroacetophenone derivatives and in situ generated hydrazones. The key transformation of this oxidative 4π-electrocyclization proceeds through an enamine-iminium ion intermediate. This rapid one-pot DIDAN protocol results in the selective generation of C-C and C-N bonds and cleavage of a C-N bond.
Collapse
Affiliation(s)
- Balakrishna Aegurla
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Nisha Jarwal
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Rama Krishna Peddinti
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| |
Collapse
|
8
|
Dibrell SE, Maser MR, Reisman SE. SeO2-Mediated Oxidative Transposition of Pauson–Khand Products. J Am Chem Soc 2020; 142:6483-6487. [DOI: 10.1021/jacs.9b13818] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sara E. Dibrell
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Michael R. Maser
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Sarah E. Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| |
Collapse
|
9
|
Bai J, Yasumoto K, Kano T, Maruoka K. Asymmetric Synthesis of Chiral 1,4‐Enynes through Organocatalytic Alkenylation of Propargyl Alcohols with Trialkenylboroxines. Angew Chem Int Ed Engl 2019; 58:8898-8901. [DOI: 10.1002/anie.201904520] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Jian‐Fei Bai
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
- Current address: Suzhou Research Institute of LICPLanzhou Institute of Chemical Physics (LICP)Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Kento Yasumoto
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
| | - Taichi Kano
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
| | - Keiji Maruoka
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou 510006 P. R. China
| |
Collapse
|
10
|
Bai J, Yasumoto K, Kano T, Maruoka K. Asymmetric Synthesis of Chiral 1,4‐Enynes through Organocatalytic Alkenylation of Propargyl Alcohols with Trialkenylboroxines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904520] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jian‐Fei Bai
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
- Current address: Suzhou Research Institute of LICPLanzhou Institute of Chemical Physics (LICP)Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Kento Yasumoto
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
| | - Taichi Kano
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
| | - Keiji Maruoka
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo Kyoto 606-8502 Japan
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou 510006 P. R. China
| |
Collapse
|
11
|
González-Pérez AB, Villar P, de Lera AR. A Computational Study of Model Parent Systems and Reported Aza-(Iso)Nazarov/Aza-(Iso)Piancatelli Electrocyclic Reactions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900103] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Adán B. González-Pérez
- University of Vigo; Department of Organic Chemistry and Center of Biomedical Research (CINBIO); Lagoas-Marcosende 36310 Vigo Spain
| | - Pedro Villar
- University of Vigo; Department of Organic Chemistry and Center of Biomedical Research (CINBIO); Lagoas-Marcosende 36310 Vigo Spain
| | - Angel R. de Lera
- University of Vigo; Department of Organic Chemistry and Center of Biomedical Research (CINBIO); Lagoas-Marcosende 36310 Vigo Spain
| |
Collapse
|
12
|
Zahrt AF, Henle JJ, Rose BT, Wang Y, Darrow WT, Denmark SE. Prediction of higher-selectivity catalysts by computer-driven workflow and machine learning. Science 2019; 363:363/6424/eaau5631. [PMID: 30655414 DOI: 10.1126/science.aau5631] [Citation(s) in RCA: 246] [Impact Index Per Article: 49.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 12/03/2018] [Indexed: 12/18/2022]
Abstract
Catalyst design in asymmetric reaction development has traditionally been driven by empiricism, wherein experimentalists attempt to qualitatively recognize structural patterns to improve selectivity. Machine learning algorithms and chemoinformatics can potentially accelerate this process by recognizing otherwise inscrutable patterns in large datasets. Herein we report a computationally guided workflow for chiral catalyst selection using chemoinformatics at every stage of development. Robust molecular descriptors that are agnostic to the catalyst scaffold allow for selection of a universal training set on the basis of steric and electronic properties. This set can be used to train machine learning methods to make highly accurate predictive models over a broad range of selectivity space. Using support vector machines and deep feed-forward neural networks, we demonstrate accurate predictive modeling in the chiral phosphoric acid-catalyzed thiol addition to N-acylimines.
Collapse
Affiliation(s)
- Andrew F Zahrt
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Jeremy J Henle
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Brennan T Rose
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Yang Wang
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - William T Darrow
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA.
| |
Collapse
|
13
|
Rhodes S, Short S, Sharma S, Kaur R, Jha M. One-pot mild and efficient synthesis of [1,3]thiazino[3,2-a]indol-4-ones and their anti-proliferative activity. Org Biomol Chem 2019; 17:3914-3920. [DOI: 10.1039/c9ob00500e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
One-pot synthesis of [1,3]thiazino[3,2-a]indol-4-one frameworks is developed in aqueous medium and the anti-proliferative activity of the synthesized compounds is evaluated against two triple negative breast cancer cell lines.
Collapse
Affiliation(s)
- Steven Rhodes
- Department of Biology and Chemistry
- Nipissing University
- North Bay
- Canada
| | - Spencer Short
- Department of Biology and Chemistry
- Nipissing University
- North Bay
- Canada
| | - Sidhika Sharma
- Department of Biology
- University of North Georgia
- Oakwood
- USA
| | - Ramneet Kaur
- Department of Biology
- University of North Georgia
- Oakwood
- USA
| | - Mukund Jha
- Department of Biology and Chemistry
- Nipissing University
- North Bay
- Canada
| |
Collapse
|
14
|
Congmon J, Tius MA. Contiguous Quaternary Centers from a Au
I
‐Catalyzed Nazarov Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800604] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jonathan Congmon
- Chemistry Department University of Hawaii at Manoa 2545 The Mall 96822 Honolulu HI USA
| | - Marcus A. Tius
- Chemistry Department University of Hawaii at Manoa 2545 The Mall 96822 Honolulu HI USA
- University of Hawaii Cancer Center 701 Ilalo Street 96813 Honolulu HI USA
| |
Collapse
|
15
|
Volpe R, Lepage RJ, White JM, Krenske EH, Flynn BL. Asymmetric synthesis of multiple quaternary stereocentre-containing cyclopentyls by oxazolidinone-promoted Nazarov cyclizations. Chem Sci 2018; 9:4644-4649. [PMID: 29899958 PMCID: PMC5969496 DOI: 10.1039/c8sc00031j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 04/19/2018] [Indexed: 01/29/2023] Open
Abstract
Carbometalation of oxazolidinone (Ox)-substituted ynamides is used to generate highly substituted Ox-divinyl (and aryl vinyl) ketones for use in Nazarov cyclizations. The Ox-group serves as a remarkably effective chiral activating group, enabling the torquoselective Nazarov cyclization of these sterically congested substrates to be performed under mild conditions. It also serves as a charge-stabilizing group in the intermediate oxyallyl cation, suppressing undesired [1,2]-sigmatropic shifts of neighboring substituents and facilitating the regio- and stereoselective incorporation of nucleophiles to yield cyclopentanoids containing up to three contiguous all-carbon quaternary (4°) stereocentres.
Collapse
Affiliation(s)
- Rohan Volpe
- Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville , Victoria 3052 , Australia .
| | - Romain J Lepage
- School of Chemistry and Molecular Biosciences , The University of Queensland , Brisbane , QLD 4072 , Australia
| | - Jonathan M White
- Bio21 Institute , School of Chemistry , University of Melbourne , Parkville , VIC 3010 , Australia
| | - Elizabeth H Krenske
- School of Chemistry and Molecular Biosciences , The University of Queensland , Brisbane , QLD 4072 , Australia
| | - Bernard L Flynn
- Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville , Victoria 3052 , Australia .
| |
Collapse
|
16
|
Mietke T, Cruchter T, Larionov VA, Faber T, Harms K, Meggers E. Asymmetric Nazarov Cyclizations Catalyzed by Chiral-at-Metal Complexes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701546] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Thomas Mietke
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Thomas Cruchter
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Vladimir A. Larionov
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
- Department of Inorganic Chemistry; Peoples' Friendship University of Russia (RUDN University); Miklukho-Maklaya St. 6 117198 Moscow Russian Federation
| | - Tabea Faber
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Klaus Harms
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Eric Meggers
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
| |
Collapse
|
17
|
Wang CS, Wu JL, Li C, Li LZ, Mei GJ, Shi F. Design of C3-Alkenyl-Substituted 2-Indolylmethanols for Catalytic Asymmetric Interrupted Nazarov-Type Cyclization. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701521] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cong-Shuai Wang
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 People's Republic of China
| | - Jia-Le Wu
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 People's Republic of China
| | - Can Li
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 People's Republic of China
| | - Lin-Zhi Li
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 People's Republic of China
| | - Guang-Jian Mei
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 People's Republic of China
| | - Feng Shi
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 People's Republic of China
| |
Collapse
|