1
|
Li Y, Ning L, Tang Q, Lan K, Yang B, Lin Q, Feng X, Liu X. Asymmetric catalytic [1,3]- or [3,3]-sigmatropic rearrangement of 3-allyloxy-4 H-chromenones and their analogues. Chem Sci 2024; 15:11005-11012. [PMID: 39027306 PMCID: PMC11253133 DOI: 10.1039/d4sc02201g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 06/05/2024] [Indexed: 07/20/2024] Open
Abstract
A highly efficient asymmetric [1,3]- and [3,3]-O-to-C sigmatropic rearrangement of 3-allyloxy-4H-chromenones and their analogues was developed. Chiral N,N'-dioxide complexes of 3d late transition metal complexes enabled two mechanistically different processes, giving a series of optically active 2,2-disubstituted chromane-3,4-diones and 2-allyl-3-hydroxy-4H-chromen-4-ones as well as their related compounds in excellent yield and enantioselectivity. Systemic mechanistic studies and DFT calculation revealed the nature of the vinyl ether unit of the substrate, which biased regioselectivity via a stepwise tight ion pair pathway and a concerted pericyclic pathway, respectively. The enantioselectivity of the two processes is also disclosed.
Collapse
Affiliation(s)
- Yi Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Lichao Ning
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Qi Tang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Kexin Lan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Bingqian Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Qianchi Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| |
Collapse
|
2
|
Momiyama N, Jongwohan C, Ohtsuka N, Chaibuth P, Fujinami T, Adachi K, Suzuki T. Chiral Counteranion-Directed Catalytic Asymmetric Methylene Migration Reaction of Ene-Aldimines. J Org Chem 2022; 87:9399-9407. [PMID: 35736506 DOI: 10.1021/acs.joc.2c00742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A catalytic asymmetric methylene migration reaction of ene-aldimines directed by chiral counteranions is developed, with the optimal catalyst identified as phenanthryl-substituted (R)-BINOL phosphate. Control experiments and density functional theory computations reveal the importance of the 2-hydroxy group of the ene-aldimine and attractive (e.g., OH···O, CH···O, CH···π, and π···π) interactions for high enantioselectivity (up to 74% ee). The results contribute to the design of asymmetric catalysis for the rearrangement of highly reactive iminium intermediates.
Collapse
Affiliation(s)
- Norie Momiyama
- Institute for Molecular Science, Okazaki, Aichi 444-8787, Japan.,SOKENDAI (Graduate University for Advanced Studies), Okazaki, Aichi 444-8787, Japan
| | - Chanantida Jongwohan
- Institute for Molecular Science, Okazaki, Aichi 444-8787, Japan.,SOKENDAI (Graduate University for Advanced Studies), Okazaki, Aichi 444-8787, Japan
| | - Naoya Ohtsuka
- Institute for Molecular Science, Okazaki, Aichi 444-8787, Japan.,SOKENDAI (Graduate University for Advanced Studies), Okazaki, Aichi 444-8787, Japan
| | - Pawittra Chaibuth
- Institute for Molecular Science, Okazaki, Aichi 444-8787, Japan.,Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | | | - Kiyohiro Adachi
- Institute for Molecular Science, Okazaki, Aichi 444-8787, Japan.,Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 111-8656, Japan
| | | |
Collapse
|
3
|
Osminski WEG, Lu Z, Zhao W, Mohammadlou A, Yin X, Matthews EC, Canestraight VM, Staples RJ, Allen CJ, Hirschi JS, Wulff WD. Probing Catalyst Function - Electronic Modulation of Chiral Polyborate Anionic Catalysts. J Org Chem 2021; 86:17762-17773. [PMID: 34852456 DOI: 10.1021/acs.joc.1c01769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Boroxinate complexes of VAPOL and VANOL are a chiral anionic platform that can serve as a versatile staging arena for asymmetric catalysis. The structural underpinning of the platform is a chiral polyborate core that covalently links together alcohols (or phenols) and vaulted biaryl ligands. The polyborate platform is assembled in situ by the substrate of the reaction, and thus a multiplex of chiral catalysts can be rapidly assembled from various alcohols (or phenols) and bis-phenol ligands for screening of catalyst activity. In the present study, variations in the steric and electronic properties of the phenol/alcohol component of the boroxinate catalyst are probed to reveal their effects on the asymmetric induction in the catalytic asymmetric aziridination reaction. A Hammett study is consistent with a mechanism in which the two substrates are hydrogen-bonded to the boroxinate core in the enantiogenic step. The results of the Hammett study are supported by a computational study in which it is found that the H-O distance of the protonated imine hydrogen bonded to the anionic boroxinate core decreases with an increase in the electron releasing ability of the phenol unit incorporated into the boroxinate. The results are not consistent with a mechanism in which the boroxinate catalyst functions as a Lewis acid and activates the imine by a Lewis acid/Lewis base interaction.
Collapse
Affiliation(s)
- Wynter E G Osminski
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Zhenjie Lu
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Wenjun Zhao
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Aliakbar Mohammadlou
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Xiaopeng Yin
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Emily C Matthews
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Virginia M Canestraight
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Richard J Staples
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Connor J Allen
- Department of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| | - Jennifer S Hirschi
- Department of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| | - William D Wulff
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| |
Collapse
|
4
|
Kim DS, Lee HG. Formation of the Tertiary Sulfonamide C(sp 3)-N Bond Using Alkyl Boronic Ester via Intramolecular and Intermolecular Copper-Catalyzed Oxidative Cross-Coupling. J Org Chem 2021; 86:17380-17394. [PMID: 34762422 DOI: 10.1021/acs.joc.1c01759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthetic strategy for the formation of C(sp3)-N bonds, particularly through a copper-catalyzed oxidative cross-coupling, is rare. Herein, we report a novel synthetic approach for the preparation of tertiary sulfonamides via copper-catalyzed intra- and intermolecular oxidative C(sp3)-N cross-coupling reactions. This method allows the utilization of the readily available C(sp3)-based pinacol boronate as a substrate and the tolerance of a wide range of functional groups under mild reaction conditions. The success of this strategy relies on the unprecedented additive effects of silanol and NaIO4.
Collapse
Affiliation(s)
- Dong Sun Kim
- Department of Chemistry, College of National Science, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hong Geun Lee
- Department of Chemistry, College of National Science, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Republic of Korea
| |
Collapse
|
5
|
Wei L, Wang CJ. Recent advances in catalytic asymmetric aza-Cope rearrangement. Chem Commun (Camb) 2021; 57:10469-10483. [PMID: 34550132 DOI: 10.1039/d1cc04387k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Aza-Cope rearrangement, as one of the fundamental reactions for C-C and C-N bond formation, has been extensively utilized for the rapid construction of synthetically challenging organic molecules. Despite significant achievements having been made in the past 80 years, catalytic enantioselective versions still remain a challenge, mainly due to the inherent nature of the reversibility of aza-Cope rearrangement. Recently, owing to the intensive development of asymmetric catalysis strategies, various chiral organocatalysts and transition-metal catalysts have been successfully applied to control the stereoselectivity of aza-Cope rearrangement, and remarkable advances have been achieved. This review highlights recent progress relating to catalytic asymmetric aza-Cope rearrangement and covers important features of these studies, including catalytic system design, mechanistic insights, stereochemistry analysis, and synthetic applications.
Collapse
Affiliation(s)
- Liang Wei
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China.
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 230021, China
| |
Collapse
|
6
|
Momiyama N, Honda Y, Suzuki T, Jongwohan C. Computational Studies on Reaction Mechanisms and Origin of Stereoselectivity in the [1,3]‐Rearrangement of Ene‐Aldimines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Norie Momiyama
- Institute for Molecular Science Okazaki, Aichi 444-8787 Japan
- SOKENDAI The Graduate University for Advanced Studies) Okazaki, Aichi 444-8787 Japan
| | - Yasushi Honda
- West Japan Office, HPC Systems Inc. 646 Nijohanjikicho, Shimogyo-ku Kyoto 600-8412 Japan
| | | | - Chanantida Jongwohan
- Institute for Molecular Science Okazaki, Aichi 444-8787 Japan
- SOKENDAI The Graduate University for Advanced Studies) Okazaki, Aichi 444-8787 Japan
| |
Collapse
|
7
|
Ronchi E, Paradine SM, Jacobsen EN. Enantioselective, Catalytic Multicomponent Synthesis of Homoallylic Amines Enabled by Hydrogen-Bonding and Dispersive Interactions. J Am Chem Soc 2021; 143:7272-7278. [PMID: 33949857 PMCID: PMC8547772 DOI: 10.1021/jacs.1c03024] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report a one-step catalytic, enantioselective method for the preparation of homoallylic N-Boc amines directly from acetals. Reactive iminium ion intermediates are generated in situ through the combination of an acetal, a chiral thiourea catalyst, trialkylsilyl triflate, and N-Boc carbamate and are subsequently trapped by a variety of allylsilane nucleophiles. No homoallylic ether byproducts are detected, consistent with allylation of the iminium intermediate being highly favored over allylation of the intermediate oxocarbenium ion. Acetals derived from aromatic aldehydes possessing a variety of functional groups and substitution patterns yield homoallylic amines with excellent levels of enantiomeric enrichment. Experimental and computational data are consistent with an anchoring hydrogen-bond interaction between the protioiminium ion and the amide of the catalyst in the enantiodetermining transition state, and with stereodifferentiation achieved through specific noncovalent interactions (NCIs) with the catalyst pyrenyl moiety. Evidence is provided that the key NCI in the major pathway is a π-stacking interaction, contrasting with the cation-π interactions invoked in previously studied reactions promoted by the same family of aryl-pyrrolidino-H-bond-donor catalysts.
Collapse
Affiliation(s)
| | | | - Eric N. Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, 02138, United States
| |
Collapse
|
8
|
Gadde K, Maes BUW, Abbaspour Tehrani K. HFIP-mediated 2-aza-Cope rearrangement: metal-free synthesis of α-substituted homoallylamines at ambient temperature. Org Biomol Chem 2021; 19:4067-4075. [PMID: 33978010 DOI: 10.1039/d1ob00404b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An efficient metal-free strategy for the synthesis of α-substituted homoallylamine derivatives has been developed via a 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP)-promoted 2-aza-Cope rearrangement of aldimines, generated in situ by condensation of aldehydes with easily accessible 1,1-diphenylhomoallylamines. This reaction provides rapid access to α-substituted homoallylamines with excellent functional group tolerance and yields. The reaction takes place at room temperature and no chromatographic purification is required for product isolation. The synthetic utility of the current method is further demonstrated by the transformation of the obtained benzophenone ketimines into N-unprotected homoallylamines, an α-amino alcohol and an α-amino amide.
Collapse
Affiliation(s)
- Karthik Gadde
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
| | - Bert U W Maes
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
| | | |
Collapse
|
9
|
Zheng L, Yin X, Mohammadlou A, Sullivan RP, Guan Y, Staples R, Wulff WD. Asymmetric Catalytic Meerwein–Ponndorf–Verley Reduction of Ketones with Aluminum(III)-VANOL Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01734] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Li Zheng
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Xiaopeng Yin
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Aliakbar Mohammadlou
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Ryan P. Sullivan
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Yong Guan
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Richard Staples
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - William D. Wulff
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| |
Collapse
|
10
|
Uraguchi D, Ueoka F, Tanaka N, Kizu T, Takahashi W, Ooi T. A Structurally Robust Chiral Borate Ion: Molecular Design, Synthesis, and Asymmetric Catalysis. Angew Chem Int Ed Engl 2020; 59:11456-11461. [DOI: 10.1002/anie.202001637] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/12/2020] [Indexed: 02/02/2023]
Affiliation(s)
- Daisuke Uraguchi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Fumito Ueoka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Naoya Tanaka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Tomohito Kizu
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Wakana Takahashi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Takashi Ooi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Nagoya 464-8601 Japan
| |
Collapse
|
11
|
Uraguchi D, Ueoka F, Tanaka N, Kizu T, Takahashi W, Ooi T. A Structurally Robust Chiral Borate Ion: Molecular Design, Synthesis, and Asymmetric Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Daisuke Uraguchi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Fumito Ueoka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Naoya Tanaka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Tomohito Kizu
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Wakana Takahashi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Takashi Ooi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Nagoya 464-8601 Japan
| |
Collapse
|
12
|
Wang R, Shen C, Cheng X, Wang Z, Tao H, Dong X, Wang C. Sequential
Ir‐Catalyzed
Allylation/
2‐aza‐Cope
Rearrangement Strategy for the Construction of Chiral Homoallylic Amines
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000065] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ruo‐Qing Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei 430072 China
| | - Chong Shen
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei 430072 China
| | - Xiang Cheng
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei 430072 China
| | - Zuo‐Fei Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei 430072 China
| | - Hai‐Yan Tao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei 430072 China
| | - Xiu‐Qin Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei 430072 China
| | - Chun‐Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan, Hubei 430072 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 230021 China
| |
Collapse
|
13
|
Jin M, Yin SF, Yang SD. Bismuth(III)-Catalyzed Sequential Enamine-Imine Tautomerism/2-Aza-Cope Rearrangement of Stable β-Enaminophosphonates: One-Pot Synthesis of β-Aminophosphonates. Org Lett 2020; 22:2811-2815. [PMID: 32186884 DOI: 10.1021/acs.orglett.0c00796] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A novel catalytic tautomeric transformation of a β-enaminophosphoryl and 2-aza-Cope rearrangement sequence has been successfully applied to the one-pot synthesis of β-aminophosphonates with high efficiency and good tolerance. In this tandem reaction, Bi(OTf)3 exhibits unique activities and promotes both of enamine-imine tautomerism and 2-aza-Cope rearrangement.
Collapse
Affiliation(s)
- Ming Jin
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shi-Fu Yin
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| |
Collapse
|
14
|
Wei L, Xiao L, Wang Z, Tao H, Wang C. Ir/Phase‐Transfer‐Catalysis Cooperatively Catalyzed Asymmetric Cascade Allylation/2‐aza‐Cope Rearrangement: An Efficient Route to Homoallylic Amines from Aldimine Esters
†. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900391] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Liang Wei
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 China
| | - Lu Xiao
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 China
| | - Zuo‐Fei Wang
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 China
| | - Hai‐Yan Tao
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 China
| | - Chun‐Jiang Wang
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry Shanghai 230021 China
| |
Collapse
|
15
|
Wang Y, Deng LF, Zhang X, Niu D. Catalytic Asymmetric Synthesis of α-Tetrasubstituted α-Trifluoromethyl Homoallylic Amines by Ir-Catalyzed Umpolung Allylation of Imines. Org Lett 2019; 21:6951-6956. [PMID: 31418581 DOI: 10.1021/acs.orglett.9b02550] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yingwei Wang
- Department of Emergency, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, 610041, China
| | - Li-Fan Deng
- Department of Emergency, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, 610041, China
| | - Xia Zhang
- Department of Emergency, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, 610041, China
| | - Dawen Niu
- Department of Emergency, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, 610041, China
| |
Collapse
|
16
|
Nallasivam JL, Fernandes RA. Synthetic modifications of bifunctional homoallylamines: Synthesis of 2-arylpiperidines, ( R)-anatabine and ( R)-anabasine. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1643890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Jothi L. Nallasivam
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, MH, India
| | - Rodney A. Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, MH, India
| |
Collapse
|
17
|
Jongwohan C, Honda Y, Suzuki T, Fujinami T, Adachi K, Momiyama N. Brønsted Acid-Initiated Formal [1,3]-Rearrangement Dictated by β-Substituted Ene-Aldimines. Org Lett 2019; 21:4991-4995. [PMID: 31247769 DOI: 10.1021/acs.orglett.9b01533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The rearrangement of ene-aldimines is a useful reaction for affording homoallylic amines. Despite their utilities in synthetic chemistry, the rearrangement for accessing homoallylic amines substituted at the 2-position remains elusive. In this study, the Brønsted acid-initiated formal [1,3]-rearrangement of ene-aldimines was developed to synthesize 2,4,4-substituted homoallylic amines that were otherwise inaccessible previously. Our study reveals an intermolecular pathway in which the rearrangement proceeds via a protonation-mediated 2-azaallenium cation.
Collapse
Affiliation(s)
- Chanantida Jongwohan
- Institute for Molecular Science , Okazaki , Aichi 444-8787 , Japan.,SOKENDAI, The Graduate University for Advanced Studies , Okazaki , Aichi 444-8787 , Japan
| | - Yasushi Honda
- West Japan Office , HPC Systems Inc. , 646 Nijohanjikicho , Shimogyo-ku, Kyoto 600-8412 , Japan
| | - Toshiyasu Suzuki
- Institute for Molecular Science , Okazaki , Aichi 444-8787 , Japan.,SOKENDAI, The Graduate University for Advanced Studies , Okazaki , Aichi 444-8787 , Japan
| | - Takeshi Fujinami
- Institute for Molecular Science , Okazaki , Aichi 444-8787 , Japan
| | - Kiyohiro Adachi
- Institute for Molecular Science , Okazaki , Aichi 444-8787 , Japan.,Department of Applied Chemistry, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 111-8656 , Japan
| | - Norie Momiyama
- Institute for Molecular Science , Okazaki , Aichi 444-8787 , Japan.,SOKENDAI, The Graduate University for Advanced Studies , Okazaki , Aichi 444-8787 , Japan
| |
Collapse
|
18
|
Synergistic catalysis for cascade allylation and 2-aza-cope rearrangement of azomethine ylides. Nat Commun 2019; 10:1594. [PMID: 30962429 PMCID: PMC6453969 DOI: 10.1038/s41467-019-09563-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/15/2019] [Indexed: 11/28/2022] Open
Abstract
The efficient construction of enantiomerically enriched molecules from simple starting materials via catalytic asymmetric synthesis strategies is a key challenge in synthetic chemistry. Metallated azomethine ylides are commonly-used synthons for the preparation of N-heterocycles and α-amino acids. Remarkably, to date, the utilization of azomethine ylides for the facile access to chiral amines has proven elusive. Here, we report that a synergistic Cu/Ir-catalytic system combined with careful tuning of the steric congestion can be used to convert aldimine esters to a variety of chiral homoallylic amines via a cascade allylation/2-aza-Cope rearrangement. The elucidation of the distinct effects of each stereogenic center of the allylation intermediates on the stereochemical outcome and chirality transfer in the rearrangement further guided the selection of catalysts combination. Metallated azomethine ylides are commonly used for the construction of N-heterocycles and α-amino acids. Here, the authors report a synergistic Cu/Ir-catalytic system that converts aldimine esters to a variety of chiral homoallylic amines via a cascade allylation/2-aza-Cope rearrangement.
Collapse
|
19
|
Affiliation(s)
- Hua Wu
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN; BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN; BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN; BCH 5304 1015 Lausanne Switzerland
| |
Collapse
|
20
|
Gadde K, Daelemans J, Maes BUW, Abbaspour Tehrani K. Lewis acidic FeCl3 promoted 2-aza-Cope rearrangement to afford α-substituted homoallylamines in dimethyl carbonate. RSC Adv 2019; 9:18013-18017. [PMID: 35520547 PMCID: PMC9064679 DOI: 10.1039/c9ra03277k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/29/2019] [Indexed: 01/08/2023] Open
Abstract
The current work shows an iron-catalyzed 2-aza-Cope rearrangement in dimethyl carbonate for the synthesis of a wide variety of α-substituted homoallylamines from readily accessible starting materials with diverse functional groups.
Collapse
Affiliation(s)
- Karthik Gadde
- Organic Synthesis
- Department of Chemistry
- University of Antwerp
- 2020 Antwerp
- Belgium
| | - Jonas Daelemans
- Organic Synthesis
- Department of Chemistry
- University of Antwerp
- 2020 Antwerp
- Belgium
| | - Bert U. W. Maes
- Organic Synthesis
- Department of Chemistry
- University of Antwerp
- 2020 Antwerp
- Belgium
| | | |
Collapse
|
21
|
Chiral Diol-Based Organocatalysts in Enantioselective Reactions. Molecules 2018; 23:molecules23092317. [PMID: 30208621 PMCID: PMC6225256 DOI: 10.3390/molecules23092317] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/03/2018] [Accepted: 09/06/2018] [Indexed: 12/22/2022] Open
Abstract
Organocatalysis has emerged as a powerful synthetic tool in organic chemistry in the last few decades. Among various classes of organocatalysis, chiral diol-based scaffolds, such as BINOLs, VANOLs, and tartaric acid derivatives, have been widely used to induce enantioselectivity due to the ability of the hydroxyls to coordinate with the Lewis acidic sites of reagents or substrates and create a chiral environment for the transformation. In this review, we will discuss the applications of these diol-based catalysts in different types of reactions, including the scopes of reactions and the modes of catalyst activation. In general, the axially chiral aryl diol BINOL and VANOL derivatives serve as the most competent catalyst for most examples, but examples of exclusive success using other scaffolds, herein, suggests that they should not be overlooked. Lastly, the examples, to date, are mainly from tartrate and biaryl diol catalysts, suggesting that innovation may be available from new diol scaffolds.
Collapse
|
22
|
Zhuo CX, Fürstner A. Catalysis-Based Total Syntheses of Pateamine A and DMDA-Pat A. J Am Chem Soc 2018; 140:10514-10523. [PMID: 30056701 DOI: 10.1021/jacs.8b05094] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The marine natural product pateamine A (1) and its somewhat simplified designer analogue DMDA-Pat A (2) (DMDA = desmethyl-desamino) are potently cytotoxic compounds; most notably, 2 had previously been found to exhibit a promising differential in vivo activity in xenograft melanoma models, even though the ubiquitous eukaryotic initiation factor 4A (eIF4A) constitutes its primary biological target. In addition, 1 had also been identified as a possible lead in the quest for medication against cachexia, an often lethal muscle wasting syndrome affecting many immunocompromised or cancer patients. The short supply of these macrodiolides, however, rendered a more detailed biological assessment difficult. Therefore, a new synthetic approach to 1 and 2 has been devised, which centers on an unorthodox strategy for the formation of the highly isomerization-prone but essential Z, E-configured dienoate substructure embedded into the macrocyclic core. This motif was encoded in the form of a 2-pyrone ring and unveiled only immediately before macrocyclization by an unconventional iron-catalyzed ring opening/cross-coupling reaction, in which the enol ester entity of the pyrone gains the role of a leaving group. Since the required precursor was readily available by gold catalysis, this strategy rendered the overall sequence short, robust, and scalable. A surprisingly easy protecting group management together with a much improved end game for the formation of the trienyl side chain via a modern Stille coupling protocol also helped to make the chosen route practical. Change of a single building block allowed the synthesis to be redirected from the natural lead compound 1 toward its almost equipotent analogue 2. Isolation and reactivity profiling of pyrone tricarbonyliron complexes provide mechanistic information as well as insights into the likely origins of the observed chemoselectivity.
Collapse
Affiliation(s)
- Chun-Xiang Zhuo
- Max-Planck-Institut für Kohlenforschung , D-45470 Mülheim/Ruhr , Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung , D-45470 Mülheim/Ruhr , Germany
| |
Collapse
|
23
|
Bartlett SL, Johnson JS. Synthesis of Complex Glycolates by Enantioconvergent Addition Reactions. Acc Chem Res 2017; 50:2284-2296. [PMID: 28817258 DOI: 10.1021/acs.accounts.7b00263] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The unique role that stereochemistry plays in molecular recognition events continues to provide a driving force for synthesizing organic compounds in enantioenriched form. The tendency of enantioenriched organic compounds to revert to an entropically favored racemic state in the presence of viable racemization pathways (e.g., the enolization of stereogenic carbonyl derivatives) can sometimes interfere with this objective; however, beginning with Noyori's foundational disclosure of a dynamic kinetic transfer hydrogenation, the ability to channel racemic, configurationally labile starting materials through stereoconvergent reaction pathways has been recognized as a powerful strategy in asymmetric synthesis. Proton transfer, retro-aldol, retro-Michael, reversible redox events, and other processes that can be deleterious to asymmetric synthesis are exploitable in enantioconvergent reactions using chiral small molecules and enzymes as asymmetric catalysts. Enantioselective reduction of configurationally labile carbonyl derivatives bearing a C-H acidic chiral center are particularly common. Because facile racemization is vital to stereocontrol in these transformations, hydrogenations of β-dicarbonyls are commonplace, while less activated substrates have been used less commonly. Our entry into enantioconvergent catalysis evolved from a long-standing interest in the synthesis of complex glycolates and began with the development of a general Noyori-type transfer hydrogenation of α-keto esters. Key innovations in this work include the identification of a new terphenylsulfonamide-Ru(II) complex, which displays unusual preference toward reduction of α-keto esters, and the observation that α-keto esters racemize under mildly basic conditions. This work was extended to the dynamic kinetic hydrogenation of racemic acyl phosphonates. Moreover, the recent recognition that the mechanistic paradigm underlying enantioconvergent hydrogenation chemistry can be extended to diverse carbon-centered nucleophiles has led to advances in the art. Our lab has developed a number of enantioconvergent tertiary alcohol syntheses. In the context of carbon-centered nucleophiles, we have focused on the use of α-keto esters; however, in the latter part of this Account, we will briefly describe our nascent efforts to develop dynamic kinetic additions of carbon-centered nucleophiles to β-oxo acid derivatives. While the enantioconvergent hydrogenation of β-keto acid derivatives is carried out on 100-ton scale annually, non-hydrogenative transformations of these compounds constitute an underexplored subclass of enantioconvergent reactions. With regard to future prospects, a trend toward transformations that afford increasing levels of molecular complexity is apparent. It can be expected that the burgeoning field of asymmetric 1,2-addition chemistry will further drive this chemistry to encompass a wider array of enantioconvergent additions. Additionally, the continued exploration of these chemistries in the context of less conventional electrophiles, as well as identifying novel or overlooked modes of racemization, holds considerable potential.
Collapse
Affiliation(s)
- Samuel L. Bartlett
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290 United States
| | - Jeffrey S. Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290 United States
| |
Collapse
|
24
|
Hu G, Gupta AK, Huang L, Zhao W, Yin X, Osminski WEG, Huang RH, Wulff WD, Izzo JA, Vetticatt MJ. Pyro-Borates, Spiro-Borates, and Boroxinates of BINOL—Assembly, Structures, and Reactivity. J Am Chem Soc 2017; 139:10267-10285. [DOI: 10.1021/jacs.7b02317] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Gang Hu
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Anil K. Gupta
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Li Huang
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Wenjun Zhao
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Xiaopeng Yin
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Wynter E. G. Osminski
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Rui H. Huang
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - William D. Wulff
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Joseph A. Izzo
- Department
of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| | - Mathew J. Vetticatt
- Department
of Chemistry, Binghamton University, Binghamton, New York 13902, United States
| |
Collapse
|
25
|
|
26
|
Liu J, Cao CG, Sun HB, Zhang X, Niu D. Catalytic Asymmetric Umpolung Allylation of Imines. J Am Chem Soc 2016; 138:13103-13106. [PMID: 27643490 DOI: 10.1021/jacs.6b05288] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jie Liu
- Department of Emergency,
State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Chao-Guo Cao
- Department of Emergency,
State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Hong-Bao Sun
- Department of Emergency,
State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Xia Zhang
- Department of Emergency,
State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Dawen Niu
- Department of Emergency,
State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| |
Collapse
|
27
|
Schaubach S, Gebauer K, Ungeheuer F, Hoffmeister L, Ilg MK, Wirtz C, Fürstner A. A Two-Component Alkyne Metathesis Catalyst System with an Improved Substrate Scope and Functional Group Tolerance: Development and Applications to Natural Product Synthesis. Chemistry 2016; 22:8494-507. [DOI: 10.1002/chem.201601163] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 01/02/2023]
Affiliation(s)
| | - Konrad Gebauer
- Max-Planck-Institut für Kohlenforschung; 45470 Mülheim/Ruhr Germany
| | - Felix Ungeheuer
- Max-Planck-Institut für Kohlenforschung; 45470 Mülheim/Ruhr Germany
| | | | - Marina K. Ilg
- Max-Planck-Institut für Kohlenforschung; 45470 Mülheim/Ruhr Germany
| | - Conny Wirtz
- Max-Planck-Institut für Kohlenforschung; 45470 Mülheim/Ruhr Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung; 45470 Mülheim/Ruhr Germany
| |
Collapse
|
28
|
Affiliation(s)
- Liang Hong
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
| | - Wangsheng Sun
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Dongxu Yang
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Guofeng Li
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Rui Wang
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| |
Collapse
|
29
|
Goodman CG, Johnson JS. Asymmetric Synthesis of β-Amino Amides by Catalytic Enantioconvergent 2-Aza-Cope Rearrangement. J Am Chem Soc 2015; 137:14574-7. [PMID: 26561873 DOI: 10.1021/jacs.5b09593] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Dynamic kinetic resolutions of α-stereogenic-β-formyl amides in asymmetric 2-aza-Cope rearrangements are described. Chiral phosphoric acids catalyze this rare example of a non-hydrogenative DKR of a β-oxo acid derivative. The [3,3]-rearrangement occurs with high diastereo- and enantiocontrol, forming β-imino amides that can be deprotected to the primary β-amino amide or reduced to the corresponding diamine.
Collapse
Affiliation(s)
- C Guy Goodman
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Jeffrey S Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| |
Collapse
|
30
|
Zhong F, Pöthig A, Bach T. Synergistic Stereocontrol in the Enantioselective Ruthenium-Catalyzed Sulfoxidation of Spirodithiolane-Indolones. Chemistry 2015; 21:10310-3. [DOI: 10.1002/chem.201501780] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Indexed: 11/09/2022]
|
31
|
Desai AA, Guan Y, Odom AL, Majumder S, Wulff WD. Self-Assembly of a Library of Polyborate Chiral Anions for Asymmetric Catalytic Quinoline Reduction. Tetrahedron Lett 2015; 56:3481-3485. [PMID: 26034335 PMCID: PMC4448761 DOI: 10.1016/j.tetlet.2015.02.063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The 'template' polyborate BOROX catalysts are shown to mediate the asymmetric transfer hydrogenation of 2-quinolines. The rapid and simple generation of a large family of BOROX catalysts with significantly altered asymmetric pockets is described. A transition state model that explains the enantioselectivity is proposed.
Collapse
Affiliation(s)
- Aman A. Desai
- Department of Chemistry. Michigan State University, East Lansing, Michigan 48824
| | - Yong Guan
- Department of Chemistry. Michigan State University, East Lansing, Michigan 48824
| | - Aaron L. Odom
- Department of Chemistry. Michigan State University, East Lansing, Michigan 48824
| | - Supriyo Majumder
- Department of Chemistry. Michigan State University, East Lansing, Michigan 48824
| | - William D. Wulff
- Department of Chemistry. Michigan State University, East Lansing, Michigan 48824
- Department of Chemistry, Binghamton University, Binghamton, NY 13902
| |
Collapse
|
32
|
Rumyantsev M, Sitnikov NS, Somov NV. Hydrogen-Bond-Assisted Organocatalytic Acetalization of Secondary Alcohols: Experimental and Theoretical Studies. J Phys Chem A 2015; 119:4108-17. [DOI: 10.1021/acs.jpca.5b02102] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Misha Rumyantsev
- Nizhny Novgorod State Technical University n.a. R.E. Alekseev, 24 minin st., Nizhny Novgorod 603950, Russia
- Lobachevsky State University of Nizhni Novgorod, 23 Prospekt Gagarina (Gagarin Avenue), Nizhny
Novgorod 603950, Russia
| | - Nikolay S. Sitnikov
- Lobachevsky State University of Nizhni Novgorod, 23 Prospekt Gagarina (Gagarin Avenue), Nizhny
Novgorod 603950, Russia
| | - Nikolay V. Somov
- Lobachevsky State University of Nizhni Novgorod, 23 Prospekt Gagarina (Gagarin Avenue), Nizhny
Novgorod 603950, Russia
| |
Collapse
|
33
|
Proline catalyzed, one-pot three component Mannich reaction and sequential cyclization toward the synthesis of 2-substituted piperidine and pyrrolidine alkaloids. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
34
|
Pramanik S, Reddy RR, Ghorai P. Transition Metal-Free Generation of N-Unsubstituted Imines from Benzyl Azides: Synthesis of N-Unsubstituted Homoallylic Amines. J Org Chem 2015; 80:3656-63. [DOI: 10.1021/jo502794q] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Suman Pramanik
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Indore By-pass
Road, Bhauri, Bhopal 462066, India
| | - Reddy Rajasekhar Reddy
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Indore By-pass
Road, Bhauri, Bhopal 462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Indore By-pass
Road, Bhauri, Bhopal 462066, India
| |
Collapse
|
35
|
Nallasivam JL, Fernandes RA. A Cascade Aza-Cope/Aza-Prins Cyclization Leading to Piperidine Derivatives. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403607] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
36
|
Ma J, Li C, Zhang D, Lei Y, Li M, Jiang R, Chen W. A new type of ferrocene-based phosphine-tert-butylsulfinamide ligand: synthesis and application in asymmetric catalysis. RSC Adv 2015. [DOI: 10.1039/c5ra03010b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The first example of P,S-bidentate ligands containing both a planar chiral scaffold and a chiral sulfinamide moiety were reported.
Collapse
Affiliation(s)
- Jiangwei Ma
- School of Pharmacy
- Fourth Military Medical University
- Xi'an
- PR China
| | - Chuang Li
- School of Pharmacy
- Fourth Military Medical University
- Xi'an
- PR China
| | - Dongxu Zhang
- School of Pharmacy
- Fourth Military Medical University
- Xi'an
- PR China
| | - Yang Lei
- School of Pharmacy
- Fourth Military Medical University
- Xi'an
- PR China
| | - Muqiong Li
- School of Pharmacy
- Fourth Military Medical University
- Xi'an
- PR China
| | - Ru Jiang
- School of Pharmacy
- Fourth Military Medical University
- Xi'an
- PR China
| | - Weiping Chen
- School of Pharmacy
- Fourth Military Medical University
- Xi'an
- PR China
| |
Collapse
|
37
|
Bosque I, Foubelo F, Gonzalez-Gomez JC. A general protocol to afford enantioenriched linear homoprenylic amines. Org Biomol Chem 2014; 11:7507-15. [PMID: 24084848 DOI: 10.1039/c3ob41804a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The reaction of a readily obtained chiral branched homoprenylamonium salt with a range of aldehydes, including aliphatic substrates, affords the corresponding linear isomers in good yields and enantioselectivities.
Collapse
Affiliation(s)
- Irene Bosque
- Departamento de Química Orgánica, Facultad de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain.
| | | | | |
Collapse
|
38
|
Zhao W, Huang L, Guan Y, Wulff WD. Three-Component Asymmetric Catalytic Ugi Reaction-Concinnity from Diversity by Substrate-Mediated Catalyst Assembly. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310491] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
39
|
Zhao W, Huang L, Guan Y, Wulff WD. Three-component asymmetric catalytic Ugi reaction--concinnity from diversity by substrate-mediated catalyst assembly. Angew Chem Int Ed Engl 2014; 53:3436-41. [PMID: 24554529 DOI: 10.1002/anie.201310491] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 01/03/2014] [Indexed: 11/08/2022]
Abstract
The first chiral catalyst for the three-component Ugi reaction was identified as a result of a screen of a large set of different BOROX catalysts. The BOROX catalysts were assembled in situ from a chiral biaryl ligand, an amine, water, BH3·SMe2, and an alcohol or phenol. The catalyst screen included 13 different ligands, 12 amines, and 47 alcohols or phenols. The optimal catalyst system (LAP 8-5-47) provided α-amino amides from an aldehyde, a secondary amine, and an isonitrile with excellent asymmetric induction. The catalytically active species is proposed to be an ion pair that consists of the chiral boroxinate anion and an iminium cation.
Collapse
Affiliation(s)
- Wenjun Zhao
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA) http://www2.chemistry.msu.edu/faculty/wulff/myweb26/index.htm
| | | | | | | |
Collapse
|
40
|
Mittal N, Sun DX, Seidel D. Conjugate-base-stabilized Brønsted acids: catalytic enantioselective Pictet-Spengler reactions with unmodified tryptamine. Org Lett 2014; 16:1012-5. [PMID: 24446703 DOI: 10.1021/ol403773a] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A conjugate-base-stabilized Brønsted acid facilitates catalytic enantioselective Pictet-Spengler reactions with unmodified tryptamine. The chiral carboxylic acid catalyst is readily assembled in just two steps and enables the formation of β-carbolines with up to 92% ee. Achiral acid additives or in situ Boc-protection facilitate catalyst turnover.
Collapse
Affiliation(s)
- Nisha Mittal
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | | | | |
Collapse
|
41
|
|
42
|
Gupta AK, Zhang X, Staples RJ, Wulff WD. The iso-VAPOL ligand: synthesis, solid-state structure and its evaluation as a BOROX catalyst. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00742e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The iso-VAPOL ligand is just as effective as VAPOL in the catalytic asymmetric synthesis of aziridines at one-tenth the cost.
Collapse
Affiliation(s)
- Anil K. Gupta
- Department of Chemistry
- Michigan State University
- East Lansing, USA
| | - Xin Zhang
- Department of Chemistry
- Michigan State University
- East Lansing, USA
| | | | - William D. Wulff
- Department of Chemistry
- Michigan State University
- East Lansing, USA
| |
Collapse
|
43
|
Guan Y, Ding Z, Wulff WD. Vaulted biaryls in catalysis: A structure-activity relationship guided tour of the immanent domain of the VANOL ligand. Chemistry 2013; 19:15565-71. [PMID: 24123264 DOI: 10.1002/chem.201302451] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Indexed: 11/06/2022]
Abstract
The active site in the BOROX catalyst is a chiral polyborate anion (boroxinate) that is assembled in situ from three equivalents of B(OPh)3 and one of the VANOL ligand by a molecule of substrate. The substrates are bound to the boroxinate by H bonds to oxygen atoms O1-O3. The effects of introducing substituents at each position of the naphthalene core of the VANOL ligand are systematically investigated in an aziridination reaction. Substituents in the 4,4'- and 8,8'-positions have a negative effect on catalyst performance, whereas, substituents in the 7- and 7'-positions have the biggest impact in a positive direction.
Collapse
Affiliation(s)
- Yong Guan
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | | | | |
Collapse
|
44
|
Min C, Mittal N, Sun DX, Seidel D. Conjugate-Base-Stabilized Brønsted Acids as Asymmetric Catalysts: Enantioselective Povarov Reactions with Secondary Aromatic Amines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308196] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
45
|
Min C, Mittal N, Sun DX, Seidel D. Conjugate-Base-Stabilized Brønsted Acids as Asymmetric Catalysts: Enantioselective Povarov Reactions with Secondary Aromatic Amines. Angew Chem Int Ed Engl 2013; 52:14084-8. [DOI: 10.1002/anie.201308196] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Indexed: 01/08/2023]
|
46
|
|
47
|
Zheng LS, Li L, Yang KF, Zheng ZJ, Xiao XQ, Xu LW. New silver(I)–monophosphine complex derived from chiral Ar-BINMOL: synthesis and catalytic activity in asymmetric vinylogous Mannich reaction. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.07.105] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
48
|
Vu VH, Jouanno LA, Cheignon A, Roisnel T, Dorcet V, Sinbandhit S, Hurvois JP. Modified Fry Cyanation of a Chiral Pyridinium Salt: Asymmetric Syntheses of (-)-Coniine and (-)-Solenopsin A. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300595] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
49
|
Wu H, Song G, Wang D, Yu H, Ke Y, Liang X. Study of stereomeric peptoid chiral stationary phases containing different chiral side chains. J Chromatogr A 2013; 1298:152-6. [DOI: 10.1016/j.chroma.2013.05.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/15/2013] [Accepted: 05/15/2013] [Indexed: 10/26/2022]
|
50
|
Dimitrijević E, Taylor MS. Organoboron Acids and Their Derivatives as Catalysts for Organic Synthesis. ACS Catal 2013. [DOI: 10.1021/cs4000848] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Elena Dimitrijević
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| | - Mark S. Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| |
Collapse
|