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Liu TL, Jhou ML, Hsieh CE, Lin CJ, Su HH, Chou CM. Palladium-Catalyzed Intramolecular Allylic Amidation via Decarboxylative Aromatization: Synthesis of N-Allyl- N-aryl Sulfonamides. J Org Chem 2021; 86:9084-9095. [PMID: 34115505 DOI: 10.1021/acs.joc.1c01065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A protocol in the preparation of functionalized N-allyl-N-aryl sulfonamides via palladium-catalyzed intramolecular decarboxylative N-allylation reaction is presented. The alkylated 2,5-cyclohexadienyl ketoesters reacted with arylsulfonamides in the presence of titanium tetrachloride and pyridine, which allows the formation of alkylated 2,5-cyclohexadienyl sulfonyl iminoesters which then undergo a palladium-catalyzed intramolecular allylic amidation through decarboxylative aromatization to provide functionalized N-allyl-N-aryl sulfonamides. This allylation protocol proceeds with good regioselectivity. Moreover, we have also shown that N-allyl-N-aryl sulfonamide can be transformed into 4-aryl-1,2,3,4-tetrahydroquinoline and nitrogen-containing β-hydroxysulfide bioactives.
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Affiliation(s)
- Tzu-Lun Liu
- Department of Applied Chemistry, National University of Kaohsiung, 700, Kaohsiung University Road, Nanzih District, 81148 Kaohsiung, Taiwan
| | - Meng-Li Jhou
- Department of Applied Chemistry, National University of Kaohsiung, 700, Kaohsiung University Road, Nanzih District, 81148 Kaohsiung, Taiwan
| | - Cheng-En Hsieh
- Department of Applied Chemistry, National University of Kaohsiung, 700, Kaohsiung University Road, Nanzih District, 81148 Kaohsiung, Taiwan
| | - Chia-Jung Lin
- Department of Applied Chemistry, National University of Kaohsiung, 700, Kaohsiung University Road, Nanzih District, 81148 Kaohsiung, Taiwan
| | - Hsiu-Hui Su
- Department of Applied Chemistry, National University of Kaohsiung, 700, Kaohsiung University Road, Nanzih District, 81148 Kaohsiung, Taiwan
| | - Chih-Ming Chou
- Department of Applied Chemistry, National University of Kaohsiung, 700, Kaohsiung University Road, Nanzih District, 81148 Kaohsiung, Taiwan
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2
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Dohmen S, Reiher M, Albat D, Akyol S, Barone M, Neudörfl J, Kühne R, Schmalz H. Pd-Catalyzed Asymmetric N-Allylation of Amino Acid Esters with Exceptional Levels of Catalyst Control: Stereo-Divergent Synthesis of ProM-15 and Related Bicyclic Dipeptide Mimetics. Chemistry 2020; 26:3049-3053. [PMID: 31961029 PMCID: PMC7078984 DOI: 10.1002/chem.202000307] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Indexed: 01/09/2023]
Abstract
A general and powerful method for the stereo‐controlled Pd‐catalyzed N‐allylation of amino acid esters is reported, as a previously largely unsolved synthetic challenge. Employing a new class of tartaric acid‐derived C2‐symmetric chiral diphosphane ligands the developed asymmetric amination protocol allows the conversion of various amino acid esters to the N‐allylated products with highest levels of enantio‐ or diastereoselectivity in a fully catalyst‐controlled fashion and predictable configuration. Remarkably, the in situ generated catalysts also exhibit outstanding levels of activity (ligand acceleration). The usefulness of the method was demonstrated in the stereo‐divergent synthesis of a set of new conformationally defined dipeptide mimetics, which represent new modular building blocks for the development of peptide‐inspired bioactive compounds.
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Affiliation(s)
- Stephan Dohmen
- Department of ChemistryUniversity of CologneGreinstrasse 450939KölnGermany
| | - Martin Reiher
- Department of ChemistryUniversity of CologneGreinstrasse 450939KölnGermany
| | - Dominik Albat
- Department of ChemistryUniversity of CologneGreinstrasse 450939KölnGermany
| | - Sema Akyol
- Department of ChemistryUniversity of CologneGreinstrasse 450939KölnGermany
| | - Matthias Barone
- Leibniz-Institut für Molekulare Pharmakologie (FMP)13125BerlinGermany
| | | | - Ronald Kühne
- Leibniz-Institut für Molekulare Pharmakologie (FMP)13125BerlinGermany
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3
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Yang Y, Lee JW. Toward ideal carbon dioxide functionalization. Chem Sci 2019; 10:3905-3926. [PMID: 31015931 PMCID: PMC6457084 DOI: 10.1039/c8sc05539d] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 02/20/2019] [Indexed: 12/23/2022] Open
Abstract
This Perspective recapitulates recent developments of carbon dioxide utilization in carbon-carbon bond formation reactions, with an intention of paving a way toward sustainable CO2-functionalization and its tangible applications in synthetic chemistry. CO2 functionalization reactions possess intrinsic drawbacks: the high kinetic inertness and thermodynamic stability of CO2. Numerous procedures for CO2 utilization depend on energy-intensive processes (i.e. high pressure and/or temperature), often solely relying on reactive substrates, hampering its general applications. Recent efforts thus have been dedicated to catalytic CO2-utilization under ambient reaction conditions, however, it is still limited to a few activation modes and the use of reactive substrates. Herein, ideal CO2-functionalization with particular emphasis on sustainability will be discussed based on the following sub-categories; (1) metal-catalyzed 'reductive' carboxylation reaction of halides, olefins and allyl alcohols, (2) photochemical CO2-utilization, (3) redox-neutral CO2-functionalization, and (4) enantioselective catalysis incorporating CO2 to form C-CO2 bonds (excluding strain mediated reactions with epoxide- and aziridine-based substrates). Recent progress in these fields will be discussed with the proposed reaction mechanisms and selected examples, highlighting redox-neutral, umpolung, and asymmetric carboxylation to postulate ideal CO2 functionalization reactions to be developed in the near future.
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Affiliation(s)
- Yang Yang
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , Copenhagen Ø , 2100 , Denmark .
| | - Ji-Woong Lee
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , Copenhagen Ø , 2100 , Denmark .
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4
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Kovács B, Forró E, Fülöp F. Candida antarctica lipase B catalysed kinetic resolution of 1,2,3,4-tetrahydro-ß-carbolines: Substrate specificity. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Messmer D, Kröger M, Schlüter AD. Pushing Synthesis toward the Maximum Generation Range of Dendritic Macromolecules. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00891] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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6
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Efficient lipase-catalysed route for the kinetic resolution of salsolidine and its ß-carboline analogue. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.10.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Kumagai N, Shibasaki M. Synthetic studies of viridiofungins, broad-spectrum antifungal agents and serine palmitoyl transferase inhibitors. J Antibiot (Tokyo) 2017; 71:ja2017110. [PMID: 28951603 DOI: 10.1038/ja.2017.110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/18/2017] [Accepted: 08/07/2017] [Indexed: 12/27/2022]
Abstract
Viridiofungins are alkyl citrate natural products characterized by their inhibitory effects on squalene synthase and serine palmitoyl transferase. Their activities as broad-spectrum antifungal agents as well as blocking agents for the biosynthesis of sphingolipids have inspired the development of several approaches toward their stereoselective total synthesis. Structurally, these natural products are a family of hybrid molecules comprising a longer alkyl chain and a citric acid unit, rendering an asymmetric structure that is difficult to access. Herein, we summarize the synthetic approaches to this attractive class of natural products, including proficient synthetic strategies for constructing the densely and chirally functionalized citric acid unit with high polarity. Particular emphasis is placed on methods for furnishing stereogenic centers in the highly constrained carbon framework.The Journal of Antibiotics advance online publication, 27 September 2017; doi:10.1038/ja.2017.110.
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Affiliation(s)
- Naoya Kumagai
- Laboratory of Synthetic Organic Chemistry, Institute of Microbial Chemistry (BIKAKEN), Tokyo, Japan
| | - Masakatsu Shibasaki
- Laboratory of Synthetic Organic Chemistry, Institute of Microbial Chemistry (BIKAKEN), Tokyo, Japan
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8
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Wang X, Liu R, Yang Y, Zhang M. Isolation, purification and identification of antioxidants in an aqueous aged garlic extract. Food Chem 2015; 187:37-43. [DOI: 10.1016/j.foodchem.2015.03.109] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 10/23/2022]
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9
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Abstract
A concise total synthesis of the complex indole alkaloid (±)-actinophyllic acid was accomplished by a sequence of reactions requiring only 10 steps from readily-available, known starting materials. The approach featured a Lewis acid-catalyzed cascade of reactions involving stabilized carbocations that delivered the tetracyclic core of the natural product in a single chemical operation. Optimal conversion of this key intermediate into (±)-actinophyllic acid required judicious selection of a protecting group strategy.
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Affiliation(s)
- Brett A. Granger
- Department of Chemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-0165, USA
| | - Ivan T. Jewett
- Department of Chemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-0165, USA
| | - Jeffrey D. Butler
- Department of Chemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-0165, USA
| | - Stephen F. Martin
- Department of Chemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-0165, USA
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10
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Zhang J, Stanciu C, Wang B, Hussain MM, Da CS, Carroll PJ, Dreher SD, Walsh PJ. Palladium-catalyzed allylic substitution with (η6-arene-CH2Z)Cr(CO)(3)-based nucleophiles. J Am Chem Soc 2011; 133:20552-60. [PMID: 22047504 DOI: 10.1021/ja208935u] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although the palladium-catalyzed Tsuji-Trost allylic substitution reaction has been intensively studied, there is a lack of general methods to employ simple benzylic nucleophiles. Such a method would facilitate access to "α-2-propenyl benzyl" motifs, which are common structural motifs in bioactive compounds and natural products. We report herein the palladium-catalyzed allylation reaction of toluene-derived pronucleophiles activated by tricarbonylchromium. A variety of cyclic and acyclic allylic electrophiles can be employed with in situ generated (η(6)-C(6)H(5)CHLiR)Cr(CO)(3) nucleophiles. Catalyst identification was performed by high throughput experimentation (HTE) and led to the Xantphos/palladium hit, which proved to be a general catalyst for this class of reactions. In addition to η(6)-toluene complexes, benzyl amine and ether derivatives (η(6)-C(6)H(5)CH(2)Z)Cr(CO)(3) (Z = NR(2), OR) are also viable pronucleophiles, allowing C-C bond-formation α to heteroatoms with excellent yields. Finally, a tandem allylic substitution/demetalation procedure is described that affords the corresponding metal-free allylic substitution products. This method will be a valuable complement to the existing arsenal of nucleophiles with applications in allylic substitution reactions.
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Affiliation(s)
- Jiadi Zhang
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA
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11
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Weaver JD, Recio A, Grenning AJ, Tunge JA. Transition metal-catalyzed decarboxylative allylation and benzylation reactions. Chem Rev 2011; 111:1846-913. [PMID: 21235271 PMCID: PMC3116714 DOI: 10.1021/cr1002744] [Citation(s) in RCA: 953] [Impact Index Per Article: 73.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A review. Transition metal catalyzed decarboxylative allylations, benzylations, and interceptive allylations are reviewed.
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Affiliation(s)
- Jimmie D. Weaver
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Antonio Recio
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | | | - Jon A. Tunge
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
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12
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Harada T, Yamada H, Tsukamoto H, Takahashi T. Allyloxycarbonyl Group as a Protective Group for the Hydroxyl Group in Carbohydrates. J Carbohydr Chem 2006. [DOI: 10.1080/07328309508006443] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Patil NT, Huo Z, Yamamoto Y. Palladium-Catalyzed Decarboxylative Aza-Michael Addition−Allylation Reactions between Allyl Carbamates and Activated Olefins. Generation of Quaternary Carbon Adjacent to Secondary Amine Carbon Center. J Org Chem 2006; 71:6991-5. [PMID: 16930053 DOI: 10.1021/jo061110c] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of allyl carbamates with activated olefins in the presence of Pd(PPh3)4 catalyst in THF proceeded smoothly at room temperature to give the corresponding beta,alpha-bisadducts, beta-amino-alpha-allylated products, in high yields. Not only highly activated olefins containing two cyano groups but also 2-cyano enones underwent facile aza-Michael addition--allylation with various allylic carbamates giving the corresponding products in high yields and with high diastereoselectivities. The stereochemistry of the singly formed product was confirmed with the help of X-ray crystallographic technique. It is an excellent method for creating beta-amino alpha-allyl ketones having two contiguous stereocenters: quaternary carbon adjacent to secondary amine carbon center.
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Affiliation(s)
- Nitin T Patil
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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14
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Tanaka S, Saburi H, Murase T, Yoshimura M, Kitamura M. Catalytic Removal of N-Allyloxycarbonyl Groups Using the [CpRu(IV)(π-C3H5)(2-quinolinecarboxylato)]PF6 Complex. A New Efficient Deprotecting Method in Peptide Synthesis. J Org Chem 2006; 71:4682-4. [PMID: 16749807 DOI: 10.1021/jo060445r] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of amines including even sterically less demanding and highly nucleophilic secondary amines have been efficiently deprotected without decarboxylative N-allylation from the corresponding N-allyloxycarbonyl (N-AOC) compounds by using a catalytic amount of [CpRu(IV)(pi-C3H5)(2-quinolinecarboxylato)]PF6 in the presence of 1 molar amount of trifluoromethanesulfonic acid, the general utility of which has been demonstrated by the efficient synthesis of a collagen protein unit tripeptide, Pro-Pro-Gly.
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Affiliation(s)
- Shinji Tanaka
- Research Center for Materials Science and Department of Chemistry, Nagoya University, Japan
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15
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Wang YG, Takeyama R, Kobayashi Y. Total Synthesis of Phoslactomycin B and Its Biosynthetic Deamino Precursor. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600458] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Wang YG, Takeyama R, Kobayashi Y. Total Synthesis of Phoslactomycin B and Its Biosynthetic Deamino Precursor. Angew Chem Int Ed Engl 2006; 45:3320-3. [PMID: 16619316 DOI: 10.1002/anie.200600458] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yong-Gang Wang
- Department of Biomolecular Engineering, Tokyo Institute of Technology, Midori-ku, Yokohama 226-8501, Japan
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18
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Yang SC, Hsu YC, Gan KH. Direct palladium/carboxylic acid-catalyzed allylation of anilines with allylic alcohols in water. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.02.035] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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M. Williams R, Ducept P, A. Gubler D. Improved Syntheses of the FR900482 and Mitomycin Benzazocine Ring Core via Mitsunobu Cyclization. HETEROCYCLES 2006. [DOI: 10.3987/com-05-s(t)18] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Hsu YC, Gan KH, Yang SC. Palladium-Catalyzed Allylation of Acidic and Less Nucleophilic Anilines Using Allylic Alcohols Directly. Chem Pharm Bull (Tokyo) 2005; 53:1266-9. [PMID: 16204982 DOI: 10.1248/cpb.53.1266] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The direct activation of C-O bonds in allylic alcohols by palladium complexes has been accelerated by carrying out the reactions in the presence of titanium(IV) isoproxide and 4 A molecular sieves. The acidic and less nucleophilic anilines such as diphenylamine, phenothiazine, 4-cyanoaniline, and nitroanilines are efficiently allylated under palladium catalysis using allylic alcohols as allylating reagents.
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Affiliation(s)
- Yi-Chun Hsu
- Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical University, Taiwan, ROC
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21
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Morokuma K, Takahashi K, Ishihara J, Hatakeyama S. Total synthesis of viridiofungin A. Chem Commun (Camb) 2005:2265-7. [PMID: 15856117 DOI: 10.1039/b500660k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Viridiofungin A, a member of amino alkyl citrate antibiotics from Trichoderma viride, was enantioselectively synthesized in naturally occurring form for the first time, employing regio- and stereoselective opening of the chiral glycidate with vinylmagnesium bromide and alkene cross metathesis of the citric acid core and hexadec-15-en-8-one as key steps.
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Affiliation(s)
- Kenji Morokuma
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
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22
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Shue YJ, Yang SC, Lai HC. Direct palladium(0)-catalyzed amination of allylic alcohols with aminonaphthalenes. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02861-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Carrasco MR, Brown RT, Serafimova IM, Silva O. Synthesis of N-Fmoc-O- (N'-Boc-N'-methyl)-aminohomoserine, an amino acid for the facile preparation of neoglycopeptides. J Org Chem 2003; 68:195-7. [PMID: 12515483 DOI: 10.1021/jo026641p] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of N-Fmoc-O-(N'-Boc-N'-methyl)-aminohomoserine in 35% overall yield from l-homoserine is described. This amino acid can be efficiently incorporated into peptides using Fmoc-chemistry-based solid-phase peptide synthesis, and the resulting peptides can be chemoselectively glycosylated at the aminooxy side chains to generate neoglycopeptides. The synthesis of this derivative greatly expands the availability of a previously developed neoglycopeptide synthesis strategy.
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Affiliation(s)
- Michael R Carrasco
- Department of Chemistry, Santa Clara University, Santa Clara, California 95053-0270, USA.
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24
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Yang SC, Tsai YC, Shue YJ. Direct Platinum-Catalyzed Allylation of Anilines Using Allylic Alcohols. Organometallics 2001. [DOI: 10.1021/om0107136] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shyh-Chyun Yang
- Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yan-Chiu Tsai
- Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yi-Jen Shue
- Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
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25
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Castaño AM, Méndez M, Ruano M, Echavarren AM. Reaction of vinyl epoxides with palladium-switchable bisnucleophiles: synthesis of carbocycles. J Org Chem 2001; 66:589-93. [PMID: 11429834 DOI: 10.1021/jo0056850] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The selective activation of substrates I, potential bisnucleophiles, was achieved by using different palladium catalysts. The synthetic potential of this strategy has been demonstrated in the regiodivergent synthesis of carbocycles from substrates of type I, bearing malonate-type pronucleophiles and an alkenyl stannane, with vinyl epoxides. A selective palladium-catalyzed reaction of I with the vinyl epoxide gives rise to an allylic alcohol, which, after activation as a carbonate, led to the cyclization product by a second palladium-catalyzed reaction. The transmetalation process is favored with palladium-catalysts without phosphines or arsines as the ligands. On the other hand, the use of palladium complexes with PPh3 as the ligand inhibits the transmetalation pathway and promotes the nucleophilic attack of the malonate-type anions on the intermediate (eta 3-allyl)-palladium complexes.
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Affiliation(s)
- A M Castaño
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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26
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Yang SC, Tsai YC. Regio- and Stereoselectivity in Palladium(0)-Catalyzed Allylation of Anilines Using Allylic Alcohols Directly. Organometallics 2001. [DOI: 10.1021/om000997e] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shyh-Chyun Yang
- Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yan-Chiu Tsai
- Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
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27
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Pierre Genet J, Savignac M. Recent developments of palladium(0) catalyzed reactions in aqueous medium. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(98)01088-2] [Citation(s) in RCA: 251] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Guibé F. Allylic protecting groups and their use in a complex environment part II: Allylic protecting groups and their removal through catalytic palladium π-allyl methodology. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(97)10383-0] [Citation(s) in RCA: 180] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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29
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30
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Yamaguchi R, Mochizuki K, Kozima S, Takaya H. Facile Introduction of Michael Acceptors into Nitrogen Heterocycles. A New Efficient Route to Fused α-Methylene-γ-lactams. CHEM LETT 1994. [DOI: 10.1246/cl.1994.1809] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Shapiro G, Buechler D. Mild and rapid azide- mediated, palladium catalyzed cleavage of allylester based protecting groups. Tetrahedron Lett 1994. [DOI: 10.1016/s0040-4039(00)73515-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Miyazawa M, Yamamoto K. Palladium-Catalyzed Aminocarbonylation of CinnamylN,N-Dialkylcarbamates. An Intriguing Crossover withp-Methylcinnamylamines. CHEM LETT 1994. [DOI: 10.1246/cl.1994.491] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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