1
|
Pagès L, Abed Ali Abdine R, Monnier F, Taillefer M. Transition Metal‐Catalyzed Intermolecular Hydroarylation of Allenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lucas Pagès
- Institut Charles Gerhardt Montpellier (ICGM) Univ. Montpellier CNRS ENSCM 34293 Montpellier Cedex 5 France
| | - Racha Abed Ali Abdine
- Institut Charles Gerhardt Montpellier (ICGM) Univ. Montpellier CNRS ENSCM 34293 Montpellier Cedex 5 France
| | - Florian Monnier
- Institut Charles Gerhardt Montpellier (ICGM) Univ. Montpellier CNRS ENSCM 34293 Montpellier Cedex 5 France
- Institut Universitaire de France IUF 1 rue Descartes 75231 Paris Cedex 5 France
| | - Marc Taillefer
- Institut Charles Gerhardt Montpellier (ICGM) Univ. Montpellier CNRS ENSCM 34293 Montpellier Cedex 5 France
| |
Collapse
|
2
|
Li H, Khan I, Li Q, Zhang YJ. Pd-Catalyzed Asymmetric Three-Component Allenol Carbopalladation and Allylic Cycloaddition Cascade: A Route to Functionalized Tetrahydrofurans. Org Lett 2022; 24:2081-2086. [PMID: 35274964 DOI: 10.1021/acs.orglett.2c00142] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first Pd-catalyzed asymmetric three-component reaction of 2,3-allenol, aryl iodides, and 2-arylmethylenemolononitriles has been developed via an allenol carbopalladation and an allylic cycloaddition cascade. This process allows rapid access to substituted tetrahydrofurans bearing diverse functional groups in good yields with high diastereoselectivities and excellent enantioselectivities. The concise total synthesis of a lignan, (-)-2-episesaminone, has been achieved by the elaboration of a functionalized tetrahydrofuran obtained from this reaction.
Collapse
Affiliation(s)
- Hongfang Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Ijaz Khan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Qun Li
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, 197 Ruijin Second Road, Shanghai 200025, P. R. China
| | - Yong Jian Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| |
Collapse
|
3
|
Tsukamoto H. Umpolung Type-I and -II Cyclizations of Aldehyde-Containing Allylpalladium Intermediates. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
4
|
Derosa J, Apolinar O, Kang T, Tran VT, Engle KM. Recent developments in nickel-catalyzed intermolecular dicarbofunctionalization of alkenes. Chem Sci 2020; 11:4287-4296. [PMID: 34122886 PMCID: PMC8152638 DOI: 10.1039/c9sc06006e] [Citation(s) in RCA: 234] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/04/2020] [Indexed: 12/23/2022] Open
Abstract
Nickel-catalyzed three-component alkene difunctionalization has rapidly emerged as a powerful tool for forging two C-C bonds in a single reaction. Building upon the powerful modes of bond construction in traditional two-component cross-coupling, various research groups have demonstrated the versatility of nickel in enabling catalytic 1,2-dicarbofunctionalization using a wide range of carbon-based electrophiles and nucleophiles and in a fully intermolecular fashion. Though this area has emerged only recently, the last few years have witnessed a proliferation of publications on this topic, underscoring the potential of this strategy to develop into a general platform that offers high regio- and stereoselectivity. This minireview highlights the recent progress in the area of intermolecular 1,2-dicarbofunctionalization of alkenes via nickel catalysis and discusses lingering challenges within this reactivity paradigm.
Collapse
Affiliation(s)
- Joseph Derosa
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla California 92037 USA
| | - Omar Apolinar
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla California 92037 USA
| | - Taeho Kang
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla California 92037 USA
| | - Van T Tran
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla California 92037 USA
| | - Keary M Engle
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla California 92037 USA
| |
Collapse
|
5
|
Tsukamoto H, Kawase A, Omura H, Doi T. Key Factors for High Diastereo- and Enantioselectivity of Umpolung Cyclizations of Aldehyde-Containing Allylpalladium Intermediates. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190167] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hirokazu Tsukamoto
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- Department of Pharmaceutical Sciences, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa 245-0066, Japan
| | - Ayumu Kawase
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Hirotaka Omura
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| |
Collapse
|
6
|
Li H, Li T, Hsueh YJ, Wu X, Xu F, Zhang YJ. Tandem arylation and regioselective allylic etherification of 2,3-allenol via Pd/B cooperative catalysis. Org Biomol Chem 2019; 17:8075-8078. [PMID: 31460559 DOI: 10.1039/c9ob01792e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient method for the construction of arylated allylic ethers was developed via three-component tandem arylation and allylic etherification of 2,3-allenol with aryl iodides and alcohols. In the cooperative catalytic system of a palladium complex and triethylborane, the process allows rapid access to functionalized 1-arylvinylated 1,2-diol derivatives in good to high yields with complete branch-selectivities. The synthetic utility of the present process was demonstrated by the late-stage functionalization of a drug molecule, the gram-scale synthesis and the elaboration of the products.
Collapse
Affiliation(s)
- Hongfang Li
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education, and Department of Chemistry, College of Science, Yanbian University, 977 Gongyuan Road, Yanji, Jilin 133002, P. R. China. and School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong32 University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Tao Li
- School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong32 University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Yu Jen Hsueh
- School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong32 University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Xue Wu
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education, and Department of Chemistry, College of Science, Yanbian University, 977 Gongyuan Road, Yanji, Jilin 133002, P. R. China.
| | - Feng Xu
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital South Campus, 6600 Nanfeng Hwy, Shanghai 201400, P. R. China.
| | - Yong Jian Zhang
- School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong32 University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| |
Collapse
|
7
|
Zhao X, Tu HY, Guo L, Zhu S, Qing FL, Chu L. Intermolecular selective carboacylation of alkenes via nickel-catalyzed reductive radical relay. Nat Commun 2018; 9:3488. [PMID: 30154495 PMCID: PMC6113317 DOI: 10.1038/s41467-018-05951-6] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/31/2018] [Indexed: 01/13/2023] Open
Abstract
The development of catalytic carboacylation of simple olefins, which would enable the rapid construction of ketones with high levels of complexity and diversity, is very challenging. To date, the vast majority of alkene carboacylation reactions are typically restricted to single- and two-component methodologies. Here we describe a three-component carboacylation of alkenes via the merger of radical chemistry with nickel catalysis. This reaction manifold utilizes a radical relay strategy involving radical addition to an alkene followed by alkyl radical capture by an acyl-nickel complex to forge two vicinal C-C bonds under mild conditions. Excellent chemoselectivity and regioselectivity have been achieved by utilizing a pendant weakly chelating group. This versatile protocol allows for facile access to a wide range of important β-fluoroalkyl ketones from simple starting materials.
Collapse
Affiliation(s)
- Xian Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University, Shanghai, 201620, China
| | - Hai-Yong Tu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University, Shanghai, 201620, China
| | - Lei Guo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University, Shanghai, 201620, China
| | - Shengqing Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University, Shanghai, 201620, China
| | - Feng-Ling Qing
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University, Shanghai, 201620, China.,Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai, 200032, China
| | - Lingling Chu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University, Shanghai, 201620, China.
| |
Collapse
|
8
|
Derosa J, van der Puyl VA, Tran VT, Liu M, Engle KM. Directed nickel-catalyzed 1,2-dialkylation of alkenyl carbonyl compounds. Chem Sci 2018; 9:5278-5283. [PMID: 29997883 PMCID: PMC6001383 DOI: 10.1039/c8sc01735b] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 05/09/2018] [Indexed: 12/18/2022] Open
Abstract
A substrate-directed approach to couple alkylzinc nucleophiles, alkyl halide electrophiles, and non-conjugated alkenes under nickel catalysis is described.
A nickel-catalyzed conjunctive cross-coupling of non-conjugated alkenes, alkyl halides, and alkylzinc reagents is reported. Regioselectivity is controlled by chelation of a removable bidentate 8-aminoquinoline directing group. Under optimized conditions, a wide range of 1,2-dialkylated products can be accessed in moderate to excellent yields. To the best of our knowledge, this report represents the first example of three-component 1,2-dialkylation of non-conjugated alkenes to introduce differentiated alkyl fragments.
Collapse
Affiliation(s)
- Joseph Derosa
- Department of Chemistry , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , USA .
| | - Vincent A van der Puyl
- Department of Chemistry , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , USA .
| | - Van T Tran
- Department of Chemistry , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , USA .
| | - Mingyu Liu
- Department of Chemistry , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , USA .
| | - Keary M Engle
- Department of Chemistry , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , USA .
| |
Collapse
|
9
|
Derosa J, Tran VT, Boulous MN, Chen JS, Engle KM. Nickel-Catalyzed β,γ-Dicarbofunctionalization of Alkenyl Carbonyl Compounds via Conjunctive Cross-Coupling. J Am Chem Soc 2017; 139:10657-10660. [DOI: 10.1021/jacs.7b06567] [Citation(s) in RCA: 186] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Joseph Derosa
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Van T. Tran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Mark N. Boulous
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jason S. Chen
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Keary M. Engle
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| |
Collapse
|
10
|
Chen S, Han X, Wu J, Li Q, Chen Y, Wang H. Manganese(I)‐Catalyzed Regio‐ and Stereoselective 1,2‐Diheteroarylation of Allenes: Combination of C−H Activation and Smiles Rearrangement. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704952] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shi‐Yong Chen
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Xiang‐Lei Han
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Jia‐Qiang Wu
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
- State Key Laboratory of Natural and Biomimetic DrugsPeking University Beijing 100191 China
| | - Yunyun Chen
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| |
Collapse
|
11
|
Chen SY, Han XL, Wu JQ, Li Q, Chen Y, Wang H. Manganese(I)-Catalyzed Regio- and Stereoselective 1,2-Diheteroarylation of Allenes: Combination of C-H Activation and Smiles Rearrangement. Angew Chem Int Ed Engl 2017. [PMID: 28631868 DOI: 10.1002/anie.201704952] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Heteroarenes are important structural motif in functional molecules. A MnI -catalyzed 1,2-diheteroarylation of allenes via a C-H activation/Smiles rearrangement cascade is presented. The reaction occurred under additive-free or even solvent-free conditions, which allowed the creation of two C-C and one C-N bonds in a single operation. A series of structurally diverse bicyclic or tricyclic compounds bearing an exocyclic double bond were constructed in good to excellent efficiency. The decarboxylative ring-opening of the products led to the facile synthesis of vicinal biheteroaryls. Synthetic applications were demonstrated and preliminary mechanistic studies were conducted.
Collapse
Affiliation(s)
- Shi-Yong Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xiang-Lei Han
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jia-Qiang Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Qingjiang Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China.,State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, China
| | - Yunyun Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Honggen Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| |
Collapse
|
12
|
McCammant MS, Shigeta T, Sigman MS. Palladium-Catalyzed 1,3-Difunctionalization Using Terminal Alkenes with Alkenyl Nonaflates and Aryl Boronic Acids. Org Lett 2016; 18:1792-5. [PMID: 27019228 PMCID: PMC5053098 DOI: 10.1021/acs.orglett.6b00517] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Pd-catalyzed 1,3-difunctionalization of terminal alkenes using 1,1-disubstituted alkenyl nonaflates and arylboronic acid coupling partners is reported. This transformation affords allylic arene products that are difficult to selectively access using traditional Heck cross-coupling methodologies. The evaluation of seldom employed 1,1-disubstituted alkenyl nonaflate coupling partners led to the elucidation of subtle mechanistic features of π-allyl stabilized Pd-intermediates. Good stereo- and regioselectivity for the formation of 1,3-addition products can be accessed through a minimization of steric interactions that emanate from alkenyl nonaflate substitution.
Collapse
Affiliation(s)
- Matthew S. McCammant
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT, USA
| | - Takashi Shigeta
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT, USA
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT, USA
| |
Collapse
|
13
|
Petrone DA, Kondo M, Zeidan N, Lautens M. Pd(0)-Catalyzed Dearomative Diarylation of Indoles. Chemistry 2016; 22:5684-91. [DOI: 10.1002/chem.201600118] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Indexed: 12/29/2022]
Affiliation(s)
- David A. Petrone
- Department of Chemistry; University of Toronto; 80 St. George St. Toronto M5S 3H6 Canada
| | - Masaru Kondo
- Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso, Showa-ku Nagoya 466-8555 Japan
| | - Nicolas Zeidan
- Department of Chemistry; University of Toronto; 80 St. George St. Toronto M5S 3H6 Canada
| | - Mark Lautens
- Department of Chemistry; University of Toronto; 80 St. George St. Toronto M5S 3H6 Canada
| |
Collapse
|
14
|
Sabounchei SJ, Ahmadianpoor M, Yousefi A, Hashemi A, Bayat M, Sedghi A, Akhlaghi Bagherjeri F, Gable RW. New Pd(ii) complexes of sulfur ylides; synthesis, X-ray characterization, a theoretical study and catalytic activity toward the Mizoroki–Heck reaction. RSC Adv 2016. [DOI: 10.1039/c6ra01390b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The reaction of sulfur ylides SMe2C(H)C(O)R (R = 4-nitrophenyl, phenyl, and 3-nitrophenyl) with [PdCl2(cod)] gives the new Pd(ii) complexes of type cis- and trans-[PdCl2(SMe2C(H)C(O)R)2] (R = phenyl (1), 3-nitrophenyl (2), and 4-nitrophenyl (3)).
Collapse
Affiliation(s)
| | | | - A. Yousefi
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | - A. Hashemi
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | - M. Bayat
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | - A. Sedghi
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| | | | - R. W. Gable
- School of Chemistry
- University of Melbourne
- Australia
| |
Collapse
|
15
|
Tsukamoto H, Kawase A, Doi T. Asymmetric palladium-catalyzed umpolung cyclization of allylic acetate-aldehyde using formate as a reductant. Chem Commun (Camb) 2015; 51:8027-30. [DOI: 10.1039/c5cc02176f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetic palladium/chiral diphosphine-catalyzed umpolung cyclization of allylic acetate-aldehyde using formate as a reductant affordscis-disubstituted pyrrolidine, tetrahydrofuran, and spiro carbocycle.
Collapse
Affiliation(s)
- Hirokazu Tsukamoto
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Ayumu Kawase
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| |
Collapse
|
16
|
Stokes BJ, Liao L, de Andrade AM, Wang Q, Sigman MS. A palladium-catalyzed three-component-coupling strategy for the differential vicinal diarylation of terminal 1,3-dienes. Org Lett 2014; 16:4666-9. [PMID: 25162125 PMCID: PMC4156257 DOI: 10.1021/ol502279u] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A palladium-catalyzed intermolecular vicinal diarylation of terminal 1,3-dienes using aryldiazonium tetrafluoroborates and arylboronic acids is reported. Using this technology, two different arenes are regioselectively introduced in a vicinal fashion across the terminal alkene of a variety of terminal 1,3-dienes at ambient temperature. Through the action of a chiral bicyclo[2.2.2]octadienyl ligand at -20 °C, good enantioselectivity has also been achieved.
Collapse
Affiliation(s)
- Benjamin J Stokes
- Department of Chemistry, University of Utah , 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | | | | | | | | |
Collapse
|
17
|
Lechel T, Pfrengle F, Reissig HU, Zimmer R. Three Carbons for Complexity! Recent Developments of Palladium-Catalyzed Reactions of Allenes. ChemCatChem 2013. [DOI: 10.1002/cctc.201200875] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
18
|
McCammant MS, Liao L, Sigman MS. Palladium-catalyzed 1,4-difunctionalization of butadiene to form skipped polyenes. J Am Chem Soc 2013; 135:4167-70. [PMID: 23473452 PMCID: PMC3688275 DOI: 10.1021/ja3110544] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A palladium-catalyzed 1,4-addition across the commodity chemical 1,3-butadiene to afford skipped polyene products is reported. Through a palladium σ → π → σ allyl isomerization, two new carbon-carbon bonds are formed with high regioselectivity and trans stereoselectivity of the newly formed alkene. The utility of this method is highlighted by the successful synthesis of the ripostatin A skipped triene core.
Collapse
Affiliation(s)
- Matthew S. McCammant
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT, 84112
| | - Longyan Liao
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT, 84112
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT, 84112
| |
Collapse
|
19
|
Cheng J, Jiang X, Ma S. Palladium-Catalyzed Approach to Stereodefined Ten-Membered Cycles from 1,5-Bisallenes. Org Lett 2011; 13:5200-3. [DOI: 10.1021/ol202074e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiajia Cheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China, and Shanghai Key Laboratory of Green Chemistry and Chemical Process Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Xuefeng Jiang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China, and Shanghai Key Laboratory of Green Chemistry and Chemical Process Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Shengming Ma
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China, and Shanghai Key Laboratory of Green Chemistry and Chemical Process Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| |
Collapse
|
20
|
Liao L, Jana R, Urkalan KB, Sigman MS. A palladium-catalyzed three-component cross-coupling of conjugated dienes or terminal alkenes with vinyl triflates and boronic acids. J Am Chem Soc 2011; 133:5784-7. [PMID: 21449562 PMCID: PMC3084658 DOI: 10.1021/ja201358b] [Citation(s) in RCA: 195] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A three-component coupling of vinyl triflates and boronic acids to alkenes catalyzed by palladium is reported. Using 1,3-dienes, selective 1,2-alkene difunction-alization is observed, whereas the use of terminal alkenes results in 1,1-alkene difunctionalization. The reaction outcome is attributed to the formation of stabilized, cationic Pd-π-allyl intermediates to regulate β-hydride elimination.
Collapse
Affiliation(s)
- Longyan Liao
- Department of Chemistry, University of Utah, 315 S. 1400 E. Salt Lake City, UT 84112-085, USA
| | - Ranjan Jana
- Department of Chemistry, University of Utah, 315 S. 1400 E. Salt Lake City, UT 84112-085, USA
| | - Kaveri Balan Urkalan
- Department of Chemistry, University of Utah, 315 S. 1400 E. Salt Lake City, UT 84112-085, USA
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, 315 S. 1400 E. Salt Lake City, UT 84112-085, USA
| |
Collapse
|
21
|
Sajna KV, Srinivas V, Kumara Swamy KC. Efficient Palladium-Catalyzed Double Arylation of Phosphonoalkynes and Diarylalkynes in Water: Use of a Dinuclear Palladium(I) Catalyst. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000579] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
22
|
Shu W, Jia G, Ma S. Palladium-Catalyzed Three-Component Cascade Cyclization Reaction of Bisallenes with Propargylic Carbonates and Organoboronic Acids: Efficient Construction ofcis-Fused Bicyclo[4.3.0]nonenes. Angew Chem Int Ed Engl 2009; 48:2788-91. [DOI: 10.1002/anie.200805422] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
23
|
Shu W, Jia G, Ma S. Palladium-Catalyzed Three-Component Cascade Cyclization Reaction of Bisallenes with Propargylic Carbonates and Organoboronic Acids: Efficient Construction ofcis-Fused Bicyclo[4.3.0]nonenes. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805422] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
24
|
Palladium(0)-catalyzed cis-selective alkylative and arylative cyclization of alkynyl enones with organoboron reagents. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.04.111] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
25
|
Jeganmohan M, Cheng CH. Transition metal-catalyzed three-component coupling of allenes and the related allylation reactions. Chem Commun (Camb) 2008:3101-17. [DOI: 10.1039/b800440d] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Flynn AB, Ogilvie WW. Stereocontrolled Synthesis of Tetrasubstituted Olefins. Chem Rev 2007; 107:4698-745. [DOI: 10.1021/cr050051k] [Citation(s) in RCA: 467] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Alison B. Flynn
- Department of Chemistry, University of Ottawa, 10 Marie Curie Street, Ottawa, Ontario K1N 6N5, Canada
| | - William W. Ogilvie
- Department of Chemistry, University of Ottawa, 10 Marie Curie Street, Ottawa, Ontario K1N 6N5, Canada
| |
Collapse
|
27
|
Bhuvaneswari S, Jeganmohan M, Cheng CH. Platinum-Catalyzed Multistep Reactions of Indoles with Alkynyl Alcohols. Chemistry 2007; 13:8285-93. [PMID: 17721891 DOI: 10.1002/chem.200700589] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
PtCl2 effectively catalyzes the multistep reaction of N-methyl indole (1 a) with pent-3-yn-1-ol (2 a) in THF at room temperature for 2 h to give indole derivative 3 a, which contains a five-membered cyclic ether group at C3 in 93% yield. Under similar reaction conditions, various substituted N-methyl indoles 1 b-h and indole (1 i) reacted efficiently with 2 a to afford the corresponding indole derivatives 3 b-h and 3 i in 48-91 and 72% yields. The results showed that N-methyl indoles with electron-donating substituents were more reactive affording higher product yields than those with electron-withdrawing groups. Likewise, various substituted but-3-yn-1-ols 2 b-e and other longer chain alkynyl alcohols 2 f-i also underwent a cyclization-addition reaction with N-methyl indole (1 a) to provide the corresponding cyclization-addition products 3 j-m and 3 a, 3 j, and 3 n-o in good to excellent yields. The present platinum-catalyzed cyclization-addition reaction can be further extended into N-methyl pyrrole. Mechanistically, the catalytic reaction proceeds by an intramolecular hydroalkoxylation of alkynyl alcohol to afford cyclic enol ether followed by the addition of the C--H bond of indole to the unsaturated moiety of cyclic enol ether providing the final product. Experimental evidence to support this proposed mechanism is provided.
Collapse
|
28
|
Bai T, Ma S, Jia G. Rh(I)-catalyzed three-component reaction of 2,3-allenoates, organoboronic acids, and aldehydes. An efficient synthesis of α,β-unsaturated δ-lactones. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.03.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
29
|
Kozuka M, Inoue A, Tsuchida T, Mitani M. Copper(I) Chloride-Catalyzed Three-Component Coupling Reaction of Primary Amines with Electrophiles and α-Halogen-Substituted Allylsilanes to Form Unsymmetrical Tertiary Amines. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200505406] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
30
|
Kozuka M, Tsuchida T, Mitani M. The direct synthesis of tertiary amines with three different substituents via the reaction of primary amines, alkyl halides, and α-chlorine substituted allylsilanes catalyzed by Lewis acids. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.05.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
31
|
Affiliation(s)
- Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, People's Republic of China
| |
Collapse
|
32
|
Jayanth TT, Jeganmohan M, Cheng CH. Highly Efficient Route to o-Allylbiaryls via Palladium-Catalyzed Three-Component Coupling of Benzynes, Allylic Halides, and Aryl Organometallic Reagents. Org Lett 2005; 7:2921-4. [PMID: 15987170 DOI: 10.1021/ol050859r] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] o-Allylbiaryl derivatives have been prepared in good to excellent yields by the palladium-catalyzed three-component reaction of allyl halides, benzynes, and aryl organometallic reagents.
Collapse
|
33
|
Knoke M, de Meijere A. Domino Heck-Diels-Alder Reactions of Differently Substituted Cyclopropylallenes. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500024] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
34
|
Zhou C, Larock RC. Regio- and Stereoselective Route to Tetrasubstituted Olefins by the Palladium-Catalyzed Three-Component Coupling of Aryl Iodides, Internal Alkynes, and Arylboronic Acids. J Org Chem 2005; 70:3765-77. [PMID: 15876060 DOI: 10.1021/jo048265+] [Citation(s) in RCA: 155] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The Pd-catalyzed three-component coupling of readily available aryl iodides, internal alkynes, and arylboronic acids provides a convenient, one-step, regio- and stereoselective route to tetrasubstituted olefins in good to excellent yields, although electron-poor aryl iodides and dialkylalkynes normally afford only low yields under our standard reaction conditions. The proper combination of substrates and reaction conditions is important for high yields. The presence of water generally substantially increases the yields of the desired tetrasubstituted olefins. The reaction involves cis-addition of the aryl group from the aryl iodide to the less hindered or more electron-rich end of the alkyne, while the aryl group from the arylboronic acid adds to the other end. A modified, room-temperature procedure has also been successfully developed, which works very well for some substrates. Tamoxifen and its derivatives are synthesized in a concise, regio- and stereoselective manner by applying our synthetic protocol.
Collapse
Affiliation(s)
- Chengxiang Zhou
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | | |
Collapse
|
35
|
|
36
|
|
37
|
Jeganmohan M, Shanmugasundaram M, Cheng CH. Highly Regio- and Chemoselective Palladium-Catalyzed Propargylallylation of Activated Olefins: A Novel Route to 1,7-Enyne Derivatives. J Org Chem 2004; 69:4053-62. [PMID: 15176830 DOI: 10.1021/jo0496998] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient method for the synthesis of 1,7-enyne derivatives via phosphine-palladium-catalyzed three-component assembling of activated olefins, allylic chlorides, and allenylstannanes is described. Substituted arylethylidene malononitriles 1a-g (RCH=C(CN)(2): R = C(6)H(5) (1a), p-ClC(6)H(4) (1b), p-OMeC(6)H(4) (1c), p-NO(2)C(6)H(4) (1d), 1-naphthyl (1e), 2-furyl (1f), and 2-thienyl (1g)) undergo propargylallylation with allylic chlorides 2a-e (allyl chloride (2a), methallyl chloride (2b), 4-chloropent-2-ene (2c), cinnamyl chloride (2d), and 3-chlorocyclohexene (2e)) and n-tributylallenylstannane (n-Bu(3)SnCH=C=CH(2), 3a) in the presence of Pd(PPh(3))(4) in toluene to afford the corresponding 1,7-enyne derivatives 4a-m in good to excellent yields. The catalytic reaction is highly regioselective, with the propargyl group adding to the carbon where the R group is attached and the allyl group adding to the carbon connected to the CN groups of activated olefins 1a-g. The present catalytic reaction is successfully extended to substituted arylethylidene-1,3-indanediones 5a-j (RCH = (1,3-indanedione): R = C(6)H(5) (5a), p-ClC(6)H(4) (5b), p-BrC(6)H(4) (5c), p-OMeC(6)H(4) (5d), p-NO(2)C(6)H(4) (5e), p-CNC(6)H(4) (5f), p-biphenyl (5g), 1-naphthyl (5h), 2-thienyl (5i), and 2-benzo[b]furane-2-yl (5j)) and substituted 2,2-dimethyl-5-(arylethylidene)-1,3-dioxane-4,6-diones 7a,b (RCH = (1,3-dioxane-4,6-dione): R = p-NO(2)C(6)H(4) (7a), p-OMeC(6)H(4) (7b)). The three-component assembling of these substrates with allylic chlorides (2a,b,d,e) and n-tributylallenylstannane (n-Bu(3)SnCH=C=CH(2), 3a) proceeds smoothly to afford the corresponding 1,7-enyne derivatives 6a-m and 8a-d in good to excellent yields. The catalytic propargylallylation can be further applied to the activated dienes, C(6)H(5)CH=CH=CR(2) (R(2) = (CN)(2) (9a), 1,3-indanedione (9b), 2,2-dimethyl-1,3-dioxane-4,6-dione (9c)), with allylic chlorides (2a,b,d) and allenylstannane 3a to give regio- and chemoselective 1,2-addition products 10a-h in good to excellent yields. A plausible mechanism based on an eta(1)-allenyl eta(3)-allyl palladium intermediate is proposed to account for the catalytic three-component reaction.
Collapse
Affiliation(s)
- Masilamani Jeganmohan
- Department of Chemistry, Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
| | | | | |
Collapse
|
38
|
Szlosek-Pinaud M, Diaz P, Martinez J, Lamaty F. Palladium-catalyzed cascade allylation/carbopalladation/cross coupling: a novel three-component reaction for the synthesis of 3,3-disubstituted-2,3-dihydrobenzofurans. Tetrahedron Lett 2003. [DOI: 10.1016/j.tetlet.2003.09.169] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
39
|
Wu MS, Rayabarapu DK, Cheng CH. Nickel-Catalyzed Highly Regio- and Stereoselective Three-Component Assembly of Allenes, Aryl Iodides, and Alkenylzirconium Reagents. J Am Chem Soc 2003; 125:12426-7. [PMID: 14531683 DOI: 10.1021/ja037718+] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyclohexylallene (1a) and alkenylzirconium reagent (n-PrCH=CHZr(Cp)2Cl) undergo three-component assembly with a variety of aromatic iodides (R1-I: R1 = 4-PhOMe, 4-PhCOMe, 4-PhMe, 2-thiophene, 2-PhOMe, 3-PhOMe, and 4-PhCO2Et) in the presence of NiCl2(PPh3)2 and zinc powder in THF at 50 degrees C to afford corresponding three-component assembly products in moderate to good yields with very high regio- and stereoselectivity. In addition to cyclohexylallene, also phenylallene, n-butylallene, cyclopentylallene, and cycloheptylallene underwent the three-component assembling reaction to furnish the corresponding 1,4-diene derivatives in good yields. Several alkenylzirconium reagents (R2CH=CHZr(Cp)2Cl: R2 = Ph (3b), t-Bu, TMS) were also employed for this three-component assembly. The nickel-catalyzed three-component assembly was further extended to vinyl iodides. Thus, 1a reacts with 3b and ethyl (Z)-3-iodoacrylate to produce a highly substituted triene in excellent yield. In all of these three-component assembly reactions, the E isomers were formed predominantly with E/Z ratios between 94/6 and 99/1. A possible mechanism for this highly regio- and stereoselective three-component assembly is proposed.
Collapse
Affiliation(s)
- Ming-Si Wu
- Department of Chemistry, Tsing Hua University, Hsinchu, Taiwan 300, Republic of China
| | | | | |
Collapse
|
40
|
Yang FY, Shanmugasundaram M, Chuang SY, Ku PJ, Wu MY, Cheng CH. Highly Regio- and Stereoselective Acylboration, Acylsilation, and Acylstannation of Allenes Catalyzed by Phosphine-Free Palladium Complexes: An Efficient Route to a New Class of 2-Acylallylmetal Reagents. J Am Chem Soc 2003; 125:12576-83. [PMID: 14531703 DOI: 10.1021/ja036021l] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new method for the synthesis of substituted 2-acylallylmetal reagents in a highly regio- and stereoselective fashion involving a three-component assembly of allenes, acyl chlorides, and bimetallic reagents (B-B, Si-Si, and Sn-Sn) catalyzed by phosphine-free palladium complexes is described. Treatment of various allenes (CR(2)R(3)=C=CH(2)) with acyl chlorides (R(1)COCl) and bispinacolatodiboron in the presence of PdCl(2)(CH(3)CN)(2) in toluene at 80 degrees C gave 2-acylallylboronates in moderate to good yields. The acylsilation of allenes with acid chlorides and hexamethyldisilane (5) proceeded successfully in the presence of Pd(dba)(2) in CH(3)CN affording the corresponding allylsilanes (CR(2)R(3)=C(COR(1))CH(2)SiMe(3)) in good to moderate yields. Several chloroformates (R(4)OCOCl) also react with 1,1-dimethylallene (2a) and 5 to afford allylsilanes (CR(2)R(3)=C(COOR(4))CH(2)SiMe(3)) in 66-70% yields. Acylstannation of allenes could also be achieved by slow addition of hexabutylditin (10) to the reaction mixture of acyl chloride (or chloroformate) and allene 2a in CH(3)CN in the presence of Pd(dba)(2) at 60 degrees C; the corresponding 2-substituted allylstannanes were isolated in moderate to good yields. The above catalytic reactions are completely regioselective and highly stereoselective. A mechanism is proposed to account for the catalytic reactions and the stereochemistry.
Collapse
Affiliation(s)
- Feng-Yu Yang
- Contribution from the Department of Chemistry, Tsing Hua University, Hsinchu, Taiwan, 300 ROC
| | | | | | | | | | | |
Collapse
|
41
|
Huang CW, Shanmugasundaram M, Chang HM, Cheng CH. Highly chemoselective coupling of allenylstannanes with organic iodides promoted by Pd(PPh3)4/LiCl: an efficient method for the synthesis of substituted allenes. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00516-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
42
|
Oh CH, Park SJ. Palladium-catalyzed cycloreductions of haloene-ynes in the presence of triethylsilane. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00713-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
43
|
Jeganmohan M, Shanmugasundaram M, Cheng CH. Highly regio- and chemoselective palladium-catalyzed three-component assembly of arylethylidene malononitriles, allylic chlorides, and allenylstannanes: a novel route to 1,7-enyne derivatives. Org Lett 2003; 5:881-4. [PMID: 12633096 DOI: 10.1021/ol034039v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] An efficient method for the synthesis of 1,7-enyne derivatives via a palladium-catalyzed three-component assembly of arylethylidene malononitriles, allylic chlorides, and allenylstannanes is described.
Collapse
|
44
|
Palladium-catalyzed cascade cyclization-coupling reactions of 2-bromo-1,6-enynes with organoboronic acids. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02536-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
45
|
Rahaim RJ, Maleczka RE. Room temperature dehalogenation of chloroarenes by polymethylhydrosiloxane (PMHS) under palladium catalysis. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)02212-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
46
|
Shanmugasundaram M, Wu MS, Jeganmohan M, Huang CW, Cheng CH. Highly regio- and chemoselective [2 + 2 + 2] cycloaddition of electron-deficient diynes with allenes catalyzed by nickel complexes: a novel entry to polysubstituted benzene derivatives. J Org Chem 2002; 67:7724-9. [PMID: 12398495 DOI: 10.1021/jo0203084] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diynes 1a-c [X(CH(2)Ctbd1;CCO(2)Me)(2): X = (CH(2))(2), 1a, X = CH(2), 1b and X = O, 1c] undergo [2 + 2 + 2] ene-diyne cycloaddition reactions with a variety of allenes (n-butylallene 2a, phenylallene 2b, (4-chlorophenyl)allene 2c, (4-bromophenyl)allene 2d, (3-methoxyphenyl)allene 2e, 1-naphthylallene 2f, cyclohexylallene 2g and cyclopentylallene 2h) in the presence of Ni(dppe)Br(2) and Zn powder in CH(3)CN at 80 degrees C for 8 h to give the corresponding polysubstituted benzene derivatives 4a-l in good to excellent yields. Under similar reaction conditions, unsymmetrical diynes 5a-c (HCtbd1;CCH(2)XCH(2)Ctbd1;CCO(2)Me) react with allenes 2 to afford exclusively the corresponding meta-isomers 6a-g in 73-86% yields. The catalytic reaction is highly regioselective and completely chemoselective. This synthetic method is compatible with many functional groups such as Cl, Br, and OMe on the phenyl group of the allene moiety and an ether linkage in a diyne moiety. In this catalytic reaction, allenes are synthetically equivalent to terminal alkynes. Interestingly, unsymmetrical diyne 7 (MeCtbd1;C(CH(2))(4)Ctbd1;CCO(2)Me) undergoes 2:1 cocyclotrimerization with allenes 2a and 2g to afford the corresponding polysubstituted benzene derivatives 9a,b in 87% and 82% yields, respectively. A plausible mechanism involving a nickelacycloheptadiene intermediate is proposed to account for this nickel-catalyzed reaction.
Collapse
|