1
|
Zhao X, Li W, Zhou L, Zhao X, Zhang Y, Li B, Li R, Zhu L. Cu(II)-Catalyzed Hydroboration Reactions of 1,1-Disubstituted α,β-Unsaturated Ketones, Esters, and Amides in Pure Water. J Org Chem 2024; 89:8334-8341. [PMID: 38860473 DOI: 10.1021/acs.joc.3c02942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Here, a Cu2(OH)2CO3-catalyzed hydroboration reaction of 1,1-disubstituted α,β-unsaturated compounds has been developed. The reaction was carried out using water as a solvent at room temperature except for N-monosubstituted α,β-unsaturated amides. This method is applicable to diverse 1,1-disubstituted α,β-unsaturated ketones, esters, and amides, showing excellent reactivity (up to 98% yield). Gram-scale experiments and functional group transformations further demonstrated the practicality of this method.
Collapse
Affiliation(s)
- Xue Zhao
- School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China
| | - Weishuang Li
- School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China
| | - Lijie Zhou
- School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China
| | - Xuhong Zhao
- School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| | - Yaoyao Zhang
- School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China
| | - Bojie Li
- School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China
| | - Rong Li
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| | - Lei Zhu
- School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
| |
Collapse
|
2
|
Jing R, Powell WC, Fisch KJ, Walczak MA. Desulfurative Borylation of Small Molecules, Peptides, and Proteins. J Am Chem Soc 2023; 145:22354-22360. [PMID: 37812507 PMCID: PMC10594600 DOI: 10.1021/jacs.3c09081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
We introduce a direct conversion of alkyl thiols into boronic acids, facilitated by a water-soluble phosphine, 1,3,5-triaza-7-phosphaadamantane (PTA), in conjunction with tetrahydroxydiboron (B2(OH)4), acting as both a radical initiator and a boron source. This desulfurative borylation reaction has been successfully applied to various substrates, including cysteine residues in oligopeptides and small proteins, primary alkyl thiols found in pharmaceutical compounds, disulfides, and selenocysteine. Optimization of reaction conditions was undertaken to reduce the formation of unwanted reactions, such as the reduction of alanyl or other primary radicals, and to prevent deleterious reactions between the phosphine and N-terminal amine that lead to methylene adducts by utilizing a buffer containing glycine-glycine (GG) dipeptide. The developed method is characterized by its operational simplicity and robustness. Moreover, its compatibility with various functional groups present in peptides and proteins makes it a promising tool for late-stage functionalization, extending its potential application across a broad spectrum of chemical and biological targets.
Collapse
Affiliation(s)
- Ruiheng Jing
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States
| | - Wyatt C Powell
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States
| | - Kyle J Fisch
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States
| | - Maciej A Walczak
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States
| |
Collapse
|
3
|
Xu H, Yamaguchi S, Mitsudome T, Mizugaki T. A copper nitride nanocube catalyst for highly efficient hydroboration of alkynes. Org Biomol Chem 2023; 21:1404-1410. [PMID: 36594420 DOI: 10.1039/d2ob02130g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The hydroboration of alkynes with bis(pinacolato)diboron is a useful method for the synthesis of vinyl boronate esters, which are essential intermediates in organic syntheses. Copper catalysts have been used extensively in these reactions. However, previously reported Cu-catalyst systems inevitably require additives and elevated temperatures. Herein, we report, for the first time, a simple and efficient hydroboration of alkynes under additive-free and mild reaction conditions (i.e., at a temperature of 30 °C) using a copper nitride nanocube (Cu3N NC) catalyst. A wide range of alkynes can be transformed into their corresponding boronate esters. Cu3N NCs are also applicable in the hydroboration of alkynes with tetrahydroxydiboron to synthesize vinyl boronic acids. Moreover, the Cu3N NCs were easily separated by simple filtration and could be reused several times without any loss of their original activity. Hence, these highly active and reusable Cu3N NC catalysts offer an environmentally friendly route for the efficient production of vinyl boronates.
Collapse
Affiliation(s)
- Hang Xu
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
| | - Sho Yamaguchi
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
| | - Takato Mitsudome
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan. .,PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 333-0012, Japan
| | - Tomoo Mizugaki
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan. .,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| |
Collapse
|
4
|
Li M, Peng GR, Yang X, Ma ZN, Xie JB. Enantio- and diastereoselective boron conjugate addition to α-alkyl α,β-unsaturated esters. Org Biomol Chem 2022; 21:53-58. [PMID: 36468637 DOI: 10.1039/d2ob01928k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We developed a copper-catalyzed enantio- and diastereoselective boron conjugate addition to α-alkyl α,β-unsaturated esters under base-free conditions. The approach showed excellent enantioselectivities (87-99% ee) and moderate to good conversions (51-99%), albeit with moderate diastereoselectivities (1 : 1-17 : 1 dr). The synthetic utility of this protocol was demonstrated.
Collapse
Affiliation(s)
- Meng Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Guang-Rui Peng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Xuan Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Zhen-Ning Ma
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Jian-Bo Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| |
Collapse
|
5
|
Zheng K, Liu M, Meng Z, Xiao Z, Zhong F, Wang W, Qin C. Copper Foam as Active Catalysts for the Borylation of α, β-Unsaturated Compounds. Int J Mol Sci 2022; 23:ijms23158403. [PMID: 35955537 PMCID: PMC9368805 DOI: 10.3390/ijms23158403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 12/10/2022] Open
Abstract
The use of simple, inexpensive, and efficient methods to construct carbon–boron and carbon–oxygen bonds has been a hot research topic in organic synthesis. We demonstrated that the desired β-boronic acid products can be obtained under mild conditions using copper foam as an efficient heterogeneous catalyst. The structure of copper foam before and after the reaction was investigated by polarized light microscopy (PM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), and the results have shown that the structure of the catalyst copper foam remained unchanged before and after the reaction. The XPS test results showed that the Cu(0) content increased after the reaction, indicating that copper may be involved in the boron addition reaction. The specific optimization conditions were as follows: CH3COCH3 and H2O were used as mixed solvents, 4-methoxychalcone was used as the raw material, 8 mg of catalyst was used and the reaction was carried out at room temperature and under air for 10 h. The yield of the product obtained was up to 92%, and the catalytic efficiency of the catalytic material remained largely unchanged after five cycles of use.
Collapse
Affiliation(s)
- Kewang Zheng
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China; (K.Z.); (M.L.); (Z.M.); (Z.X.); (C.Q.)
- Hubei Key Laboratory of Biological Resources and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Miao Liu
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China; (K.Z.); (M.L.); (Z.M.); (Z.X.); (C.Q.)
| | - Zhifei Meng
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China; (K.Z.); (M.L.); (Z.M.); (Z.X.); (C.Q.)
| | - Zufeng Xiao
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China; (K.Z.); (M.L.); (Z.M.); (Z.X.); (C.Q.)
| | - Fei Zhong
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China; (K.Z.); (M.L.); (Z.M.); (Z.X.); (C.Q.)
- Correspondence: (F.Z.); (W.W.)
| | - Wei Wang
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China; (K.Z.); (M.L.); (Z.M.); (Z.X.); (C.Q.)
- Correspondence: (F.Z.); (W.W.)
| | - Caiqin Qin
- College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China; (K.Z.); (M.L.); (Z.M.); (Z.X.); (C.Q.)
| |
Collapse
|
6
|
Das KK, Mahato S, Hazra S, Panda S. Development of Methods to the Synthesis of β-Boryl Acyls, Imines and Nitriles. CHEM REC 2022; 22:e202100290. [PMID: 35088513 DOI: 10.1002/tcr.202100290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 12/30/2022]
Abstract
Organoboron compounds are highly important and versatile synthetic intermediates for the preparation of a wide range of organic molecules. Organoboron compounds have drawn significant attention among organic chemists due to their Lewis acidic property, non-toxicity, and commercial availability. Over the last several decades, there has been a substantial development of new organoboron compounds, useful in organic synthesis. Among all other organoboron compounds, β-boryl carbonyl compounds are the important ones. The β-boryl compounds have appeared as promising intermediates for various synthetic transformations. The 1,4-conjugate addition of diboron reagents to carbon-carbon double bond in the presence of different transition-metal catalysts has been extensively reported by various research groups across the globe. This mini-review outlines the numerous racemic as well as asymmetric β-borylation methods developed to date.
Collapse
Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Somenath Mahato
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Subrata Hazra
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Santanu Panda
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| |
Collapse
|
7
|
Tsutsumi R, Taguchi R, Yamanaka M. Chiral Bipyridine Ligand with Flexible Molecular Recognition Site: Development and Application to Copper‐Catalyzed Asymmetric Borylation of α,β‐Unsaturated Ketones. ChemCatChem 2022. [DOI: 10.1002/cctc.202101278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ryosuke Tsutsumi
- Department of Chemistry and Research Center for Smart Molecules Faculty of Science Rikkyo University 3-34-1 Nishi-Ikebukuro Toshima-ku, Tokyo 171-8501 Japan
| | - Rika Taguchi
- Department of Chemistry and Research Center for Smart Molecules Faculty of Science Rikkyo University 3-34-1 Nishi-Ikebukuro Toshima-ku, Tokyo 171-8501 Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules Faculty of Science Rikkyo University 3-34-1 Nishi-Ikebukuro Toshima-ku, Tokyo 171-8501 Japan
| |
Collapse
|
8
|
Grygorenko OO, Moskvina VS, Kleban I, Hryshchyk OV. Synthesis of saturated and partially saturated heterocyclic boronic derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
9
|
Wu ZL, Lan X, Gao N, Kang X, Wang Z, Hu T, Zhao B. Highly efficient hydroboration of alkynes catalyzed by porous copper-organic framework under mild conditions. J Catal 2021. [DOI: 10.1016/j.jcat.2021.09.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
10
|
Post-translational insertion of boron in proteins to probe and modulate function. Nat Chem Biol 2021; 17:1245-1261. [PMID: 34725511 PMCID: PMC8604732 DOI: 10.1038/s41589-021-00883-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 08/25/2021] [Indexed: 11/16/2022]
Abstract
Boron is absent in proteins, yet is a micronutrient. It possesses unique bonding that could expand biological function including modes of Lewis acidity not available to typical elements of life. Here we show that post-translational Cβ–Bγ bond formation provides mild, direct, site-selective access to the minimally sized residue boronoalanine (Bal) in proteins. Precise anchoring of boron within complex biomolecular systems allows dative bond-mediated, site-dependent protein Lewis acid–base-pairing (LABP) by Bal. Dynamic protein-LABP creates tunable inter- and intramolecular ligand–host interactions, while reactive protein-LABP reveals reactively accessible sites through migratory boron-to-oxygen Cβ–Oγ covalent bond formation. These modes of dative bonding can also generate de novo function, such as control of thermo- and proteolytic stability in a target protein, or observation of transient structural features via chemical exchange. These results indicate that controlled insertion of boron facilitates stability modulation, structure determination, de novo binding activities and redox-responsive ‘mutation’. ![]()
Post-translational site-selective formation of boronoalanine in proteins enables applications of boron for binding partner capture, footprinting of interactions with reactive oxygen species, proteolytic control and mapping of transient structures.
Collapse
|
11
|
Shilpa T, Neetha M, Anilkumar G. Recent Trends and Prospects in the Copper‐Catalysed “on Water” Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Thomas Shilpa
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills Kottayam Kerala INDIA 686560
| | - Mohan Neetha
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills Kottayam Kerala INDIA 686560
| | - Gopinathan Anilkumar
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills Kottayam Kerala INDIA 686560
- Advanced Molecular materials Research centre (AMMRC) Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala INDIA 686560
- Institute for Integrated programmes and Research in Basic Sciences (IIRBS) Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala INDIA 686560
| |
Collapse
|
12
|
Oishi T, Watanabe Y, Torikai K, Yasuno Y. Synthetic Study of the C’D’E’ Ring System of Maitotoxin via Furan Based Strategy. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
13
|
Yasudomi T, Yakushiji H, Torikai K, Ebine M, Oishi T. Unified Synthesis of the DEF and GHI Ring Systems of Maitotoxin. CHEM LETT 2019. [DOI: 10.1246/cl.190479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takaya Yasudomi
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroyuki Yakushiji
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kohei Torikai
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Makoto Ebine
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tohru Oishi
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| |
Collapse
|
14
|
|
15
|
Uetake Y, Isoda M, Niwa T, Hosoya T. Synthesis of (2,2-Diborylvinyl)arenes by Rhodium-Catalyzed Desulfanylative gem-Diborylation of 2-Arylvinyl Sulfides. Org Lett 2019; 21:4933-4938. [DOI: 10.1021/acs.orglett.9b01253] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuta Uetake
- Chemical Biology Team, Division of Bio-Function Dynamics Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-Minamimachi,
Chuo-ku, Kobe 650-0047, Japan
| | - Motoyuki Isoda
- Chemical Biology Team, Division of Bio-Function Dynamics Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-Minamimachi,
Chuo-ku, Kobe 650-0047, Japan
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Takashi Niwa
- Chemical Biology Team, Division of Bio-Function Dynamics Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-Minamimachi,
Chuo-ku, Kobe 650-0047, Japan
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Takamitsu Hosoya
- Chemical Biology Team, Division of Bio-Function Dynamics Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-Minamimachi,
Chuo-ku, Kobe 650-0047, Japan
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| |
Collapse
|
16
|
Zuo YJ, Zhong Z, Fan Y, Li X, Chen X, Chang Y, Song R, Fu X, Zhang A, Zhong CM. Copper-catalyzed diastereoselective synthesis of β-boryl-α-quaternary carbon carboxylic esters. Org Biomol Chem 2018; 16:9237-9242. [PMID: 30475365 DOI: 10.1039/c8ob02469c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cu(i)-Catalyzed diastereoselective carboboration of α-alkyl-substituted α,β-unsaturated carboxylic esters to produce β-boryl-α-quaternary carbon esters was developed. The carbon skeletons of dialkyl sulfates, primary allyl halides, and benzyl bromides were transferred to the α-position of the substrates to provide products in moderate to good yields with a diastereoselectivity of >95% in most cases. Substrates bearing a β-(hetero)aryl substituent gave higher diastereoselectivities than those bearing a linear β-alkyl substituent. The crystal structure of the potassium trifluoroborate derivative shows that the reactions probably go through a copper(i) enolate intermediate and the diastereoselectivity arises from the electrophilic attack of electrophiles to the less hindered side of the enolates.
Collapse
Affiliation(s)
- Ya-Jie Zuo
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, P. R. China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Zheng K, Liu X, Feng X. Recent Advances in Metal-Catalyzed Asymmetric 1,4-Conjugate Addition (ACA) of Nonorganometallic Nucleophiles. Chem Rev 2018; 118:7586-7656. [PMID: 30047721 DOI: 10.1021/acs.chemrev.7b00692] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The metal-catalyzed asymmetric conjugate addition (ACA) reaction has emerged as a general and powerful approach for the construction of optically active compounds and is among the most significant and useful reactions in synthetic organic chemistry. In recent years, great progress has been made in this area with the use of various chiral metal complexes based on different chiral ligands. This review provides comprehensive and critical information on the enantioselective 1,4-conjugate addition of nonorganometallic (soft) nucleophiles and their importance in synthetic applications. The literature is covered from the last 10 years, and a number of examples from before 2007 are included as background information. The review is divided into multiple parts according to the type of nucleophile involved in the reaction (such as C-, B-, O-, N-, S-, P-, and Si-centered nucleophiles) and metal catalyst systems used.
Collapse
Affiliation(s)
- Ke Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| |
Collapse
|
18
|
Affiliation(s)
- Chun M. Deng
- Faculty of Chemistry and Environmental Science; Guangdong Ocean University; Zhanjiang 524088 P. R. of China
| | - Yi F. Ma
- Faculty of Chemistry and Environmental Science; Guangdong Ocean University; Zhanjiang 524088 P. R. of China
| | - Yan M. Wen
- Faculty of Chemistry and Environmental Science; Guangdong Ocean University; Zhanjiang 524088 P. R. of China
| |
Collapse
|
19
|
Kitanosono T, Masuda K, Xu P, Kobayashi S. Catalytic Organic Reactions in Water toward Sustainable Society. Chem Rev 2017; 118:679-746. [PMID: 29218984 DOI: 10.1021/acs.chemrev.7b00417] [Citation(s) in RCA: 382] [Impact Index Per Article: 54.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Traditional organic synthesis relies heavily on organic solvents for a multitude of tasks, including dissolving the components and facilitating chemical reactions, because many reagents and reactive species are incompatible or immiscible with water. Given that they are used in vast quantities as compared to reactants, solvents have been the focus of environmental concerns. Along with reducing the environmental impact of organic synthesis, the use of water as a reaction medium also benefits chemical processes by simplifying operations, allowing mild reaction conditions, and sometimes delivering unforeseen reactivities and selectivities. After the "watershed" in organic synthesis revealed the importance of water, the development of water-compatible catalysts has flourished, triggering a quantum leap in water-centered organic synthesis. Given that organic compounds are typically practically insoluble in water, simple extractive workup can readily separate a water-soluble homogeneous catalyst as an aqueous solution from a product that is soluble in organic solvents. In contrast, the use of heterogeneous catalysts facilitates catalyst recycling by allowing simple centrifugation and filtration methods to be used. This Review addresses advances over the past decade in catalytic reactions using water as a reaction medium.
Collapse
Affiliation(s)
- Taku Kitanosono
- Department of Chemistry, School of Science, The University of Tokyo , Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Koichiro Masuda
- Department of Chemistry, School of Science, The University of Tokyo , Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Pengyu Xu
- Department of Chemistry, School of Science, The University of Tokyo , Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo , Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
20
|
Verma A, Snead RF, Dai Y, Slebodnick C, Yang Y, Yu H, Yao F, Santos WL. Substrate-Assisted, Transition-Metal-Free Diboration of Alkynamides with Mixed Diboron: Regio- and Stereoselective Access to trans-1,2-Vinyldiboronates. Angew Chem Int Ed Engl 2017; 56:5111-5115. [PMID: 28371182 DOI: 10.1002/anie.201700946] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Indexed: 01/03/2023]
Abstract
A substrate-assisted diboration of alkynamides using the unsymmetrical pinacolato-1,8-diaminonaphthalenato diboron (pinBBdan) is described. The transition-metal-free reaction proceeds in a regio- and stereoselective fashion to exclusively afford trans-vinyldiboronates in good to excellent yields. Notably, Bdan and Bpin are installed on the α- and β-carbon atoms, respectively.
Collapse
Affiliation(s)
- Astha Verma
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, VA, 24061, USA
| | - Russell F Snead
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, VA, 24061, USA
| | - Yumin Dai
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, VA, 24061, USA
| | - Carla Slebodnick
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, VA, 24061, USA
| | - Yinuo Yang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei, Anhui, 230601, P.R. China
| | - Haizhu Yu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei, Anhui, 230601, P.R. China
| | - Fu Yao
- Department of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, VA, 24061, USA
| |
Collapse
|
21
|
Verma A, Snead RF, Dai Y, Slebodnick C, Yang Y, Yu H, Yao F, Santos WL. Substrate‐Assisted, Transition‐Metal‐Free Diboration of Alkynamides with Mixed Diboron: Regio‐ and Stereoselective Access to
trans
‐1,2‐Vinyldiboronates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700946] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Astha Verma
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Russell F. Snead
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Yumin Dai
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Yinuo Yang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials Anhui University Hefei Anhui 230601 P.R. China
| | - Haizhu Yu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials Anhui University Hefei Anhui 230601 P.R. China
| | - Fu Yao
- Department of Chemistry and Materials Science University of Science and Technology of China Hefei Anhui 230026 P.R. China
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| |
Collapse
|
22
|
Zuo YJ, Chang XT, Hao ZM, Zhong CM. Copper-catalyzed, stereoconvergent, cis-diastereoselective borylative cyclization of ω-mesylate-α,β-unsaturated esters and ketones. Org Biomol Chem 2017; 15:6323-6327. [DOI: 10.1039/c7ob01382e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The cis-β-boron-substituted carbocyclic and heterocyclic esters or ketones were obtained from E- and Z-substrates with >99% cis-selectivity.
Collapse
Affiliation(s)
- Ya-Jie Zuo
- College of Natural Resources and Environment
- Northwest A&F University
- Yangling 712100
- P. R. China
| | - Xiao-Tong Chang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry and Pharmacy
- Northwest A&F University
- Yangling 712100
- P. R. China
| | - Zhi-Ming Hao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry and Pharmacy
- Northwest A&F University
- Yangling 712100
- P. R. China
| | - Chong-Min Zhong
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry and Pharmacy
- Northwest A&F University
- Yangling 712100
- P. R. China
| |
Collapse
|
23
|
Xu P, Li B, Wang L, Qin C, Zhu L. A green and recyclable chitosan supported catalyst for the borylation of α,β-unsaturated acceptors in water. CATAL COMMUN 2016. [DOI: 10.1016/j.catcom.2016.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
|
24
|
|
25
|
Neeve EC, Geier SJ, Mkhalid IAI, Westcott SA, Marder TB. Diboron(4) Compounds: From Structural Curiosity to Synthetic Workhorse. Chem Rev 2016; 116:9091-161. [PMID: 27434758 DOI: 10.1021/acs.chemrev.6b00193] [Citation(s) in RCA: 737] [Impact Index Per Article: 92.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Although known for over 90 years, only in the past two decades has the chemistry of diboron(4) compounds been extensively explored. Many interesting structural features and reaction patterns have emerged, and more importantly, these compounds now feature prominently in both metal-catalyzed and metal-free methodologies for the formation of B-C bonds and other processes.
Collapse
Affiliation(s)
- Emily C Neeve
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg , Würzburg 97074, Germany
| | - Stephen J Geier
- Mount Allison University , Department of Biochemistry and Chemistry, Sackville, New Brunswick E4L 1G8, Canada
| | | | - Stephen A Westcott
- Mount Allison University , Department of Biochemistry and Chemistry, Sackville, New Brunswick E4L 1G8, Canada
| | - Todd B Marder
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg , Würzburg 97074, Germany
| |
Collapse
|
26
|
Xie JB, Lin S, Qiao S, Li G. Asymmetric Catalytic Enantio- and Diastereoselective Boron Conjugate Addition Reactions of α-Functionalized α,β-Unsaturated Carbonyl Substrates. Org Lett 2016; 18:3926-9. [DOI: 10.1021/acs.orglett.6b01998] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian-Bo Xie
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
| | - Siqi Lin
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Shuo Qiao
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Guigen Li
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- Institute of Chemistry & BioMedical Sciences (ICBMS), Nanjing University, Nanjing 210093, People’s Republic of China
| |
Collapse
|
27
|
Nelson AK, Peck CL, Rafferty SM, Santos WL. Chemo-, Regio-, and Stereoselective Copper(II)-Catalyzed Boron Addition to Acetylenic Esters and Amides in Aqueous Media. J Org Chem 2016; 81:4269-79. [DOI: 10.1021/acs.joc.6b00648] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Amanda K. Nelson
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Cheryl L. Peck
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Sean M. Rafferty
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Webster L. Santos
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| |
Collapse
|
28
|
Affiliation(s)
- Hiroto Yoshida
- Department
of Applied Chemistry,
Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| |
Collapse
|
29
|
β-Boration of α,β-unsaturated carbonyl compounds in ethanol and methanol catalyzed by CCC-NHC pincer Rh complexes. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.11.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
30
|
Hong S, Zhang W, Liu M, Yao ZJ, Deng W. Transition-metal-free hydroboration of terminal alkynes activated by base. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.09.077] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
31
|
|
32
|
Zhu L, Kitanosono T, Xu P, Kobayashi S. Chiral Cu(II)-catalyzed enantioselective β-borylation of α,β-unsaturated nitriles in water. Beilstein J Org Chem 2015; 11:2007-11. [PMID: 26664621 PMCID: PMC4661013 DOI: 10.3762/bjoc.11.217] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 09/01/2015] [Indexed: 12/14/2022] Open
Abstract
The promising performance of copper(II) complexes was demonstrated for asymmetric boron conjugate addition to α,β-unsaturated nitriles in water. The catalyst system, which consisted of Cu(OAc)2 and a chiral 2,2′-bipyridine ligand, enabled β-borylation and chiral induction in water. Subsequent protonation, which was accelerated in aqueous medium, led to high activity of this asymmetric catalysis. Both solid and liquid substrates were suitable despite being insoluble in water.
Collapse
Affiliation(s)
- Lei Zhu
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Taku Kitanosono
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Pengyu Xu
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Shū Kobayashi
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| |
Collapse
|
33
|
Frlan R, Sova M, Gobec S, Stavber G, Časar Z. Cobalt-Catalyzed Cross-Coupling of Grignards with Allylic and Vinylic Bromides: Use of Sarcosine as a Natural Ligand. J Org Chem 2015; 80:7803-9. [DOI: 10.1021/acs.joc.5b01156] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Rok Frlan
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Matej Sova
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Stanislav Gobec
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Gaj Stavber
- API
Development, Organic Synthesis Department, Lek Pharmaceuticals, d.d., Sandoz Development Centre Slovenia, Kolodvorska 27, 1234 Mengeš, Slovenia
| | - Zdenko Časar
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
- API
Development, Organic Synthesis Department, Lek Pharmaceuticals, d.d., Sandoz Development Centre Slovenia, Kolodvorska 27, 1234 Mengeš, Slovenia
- Global
Portfolio Management API, Sandoz GmbH, Biochemiestrasse 10, 6250 Kundl, Austria
| |
Collapse
|
34
|
Sova M, Frlan R, Gobec S, Stavber G, Časar Z. D-Glucosamine in iron-catalysed cross-coupling reactions of Grignards with allylic and vinylic bromides: application to the synthesis of a key sitagliptin precursor. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3327] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Matej Sova
- Faculty of Pharmacy; University of Ljubljana; Aškerčeva cesta 7 1000 Ljubljana Slovenia
| | - Rok Frlan
- Faculty of Pharmacy; University of Ljubljana; Aškerčeva cesta 7 1000 Ljubljana Slovenia
| | - Stanislav Gobec
- Faculty of Pharmacy; University of Ljubljana; Aškerčeva cesta 7 1000 Ljubljana Slovenia
| | - Gaj Stavber
- Lek Pharmaceuticals d.d.; Sandoz Development Center Slovenia, API Development, Organic Synthesis Department; Kolodvorska 27 1234 Mengeš Slovenia
| | - Zdenko Časar
- Faculty of Pharmacy; University of Ljubljana; Aškerčeva cesta 7 1000 Ljubljana Slovenia
- Lek Pharmaceuticals d.d.; Sandoz Development Center Slovenia, API Development, Organic Synthesis Department; Kolodvorska 27 1234 Mengeš Slovenia
- Sandoz GmbH; Global Portfolio Management API; Biochemiestrasse 10 6250 Kundl Austria
| |
Collapse
|
35
|
Zhu L, Kitanosono T, Xu P, Kobayashi S. A Cu(ii)-based strategy for catalytic enantioselective β-borylation of α,β-unsaturated acceptors. Chem Commun (Camb) 2015; 51:11685-8. [DOI: 10.1039/c5cc04295j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unique nature and readily availability of Cu(v) species underscores the value of the Cu(v)-based catalyst over an array of well-documented Cu(i)-based catalysts.
Collapse
Affiliation(s)
- Lei Zhu
- Deparment of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Taku Kitanosono
- Deparment of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Pengyu Xu
- Deparment of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Shū Kobayashi
- Deparment of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| |
Collapse
|
36
|
Xie JB, Lin S, Luo J, Wu J, Winn TR, Li G. Asymmetric boron conjugate addition to α,β-unsaturated carbonyl compounds catalyzed by CuOTf/Josiphos under non-alkaline conditions. Org Chem Front 2015. [DOI: 10.1039/c4qo00271g] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric boron conjugate addition onto α,β-unsaturated ketones and esters has been developed by using the CuOTf/Josiphos complex as the catalyst under non-alkaline conditions.
Collapse
Affiliation(s)
- Jian-Bo Xie
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Siqi Lin
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Jian Luo
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Jianbin Wu
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Timothy R. Winn
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Guigen Li
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
- Institute of Chemistry & BioMedical Sciences (ICBMS)
| |
Collapse
|
37
|
Hadj Mokhtar H, Boukoussa B, Hamacha R, Bengueddach A, El Abed D. CuCO3–CuO nanocomposite as a novel and environmentally friendly catalyst for triazole synthesis. RSC Adv 2015. [DOI: 10.1039/c5ra17224a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper focuses on the use of natural sources for the preparation of efficient and low cost catalysts for triazole synthesis.
Collapse
Affiliation(s)
- Halima Hadj Mokhtar
- Laboratoire de Chimie Fine L.C.F
- Université d’Oran 1 Ahmed Ben Bella
- 31100 Oran
- Algeria
- Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (C.R.A.P.C)
| | - Bouhadjar Boukoussa
- Laboratoire de Chimie des Matériaux L.C.M
- Université d’Oran1 Ahmed Ben Bella
- 31000 Oran
- Algeria
- Centre Universitaire Ain Témouchent
| | - Rachida Hamacha
- Laboratoire de Chimie des Matériaux L.C.M
- Université d’Oran1 Ahmed Ben Bella
- 31000 Oran
- Algeria
| | - Abdelkader Bengueddach
- Laboratoire de Chimie des Matériaux L.C.M
- Université d’Oran1 Ahmed Ben Bella
- 31000 Oran
- Algeria
| | - Douniazad El Abed
- Laboratoire de Chimie Fine L.C.F
- Université d’Oran 1 Ahmed Ben Bella
- 31100 Oran
- Algeria
| |
Collapse
|
38
|
|
39
|
|
40
|
Stavber G, Časar Z. CuIIand Cu0Catalyzed Mono Borylation of Unsaturated Hydrocarbons with B2pin2: Entering into the Water. ChemCatChem 2014. [DOI: 10.1002/cctc.201402176] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
41
|
Kitanosono T, Xu P, Isshiki S, Zhu L, Kobayashi S. Cu(ii)-Catalyzed asymmetric boron conjugate addition to α,β-unsaturated imines in water. Chem Commun (Camb) 2014; 50:9336-9. [DOI: 10.1039/c4cc04062g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
42
|
Buesking AW, Bacauanu V, Cai I, Ellman JA. Asymmetric Synthesis of Protected α-Amino Boronic Acid Derivatives with an Air- and Moisture-Stable Cu(II) Catalyst. J Org Chem 2014; 79:3671-7. [DOI: 10.1021/jo500300t] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Andrew W. Buesking
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Vlad Bacauanu
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Irene Cai
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Jonathan A. Ellman
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| |
Collapse
|
43
|
Radomkit S, Hoveyda AH. Enantioselective Synthesis of Boron-Substituted Quaternary Carbon Stereogenic Centers through NHC-Catalyzed Conjugate Additions of (Pinacolato)boron Units to Enones. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309982] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
44
|
Radomkit S, Hoveyda AH. Enantioselective synthesis of boron-substituted quaternary carbon stereogenic centers through NHC-catalyzed conjugate additions of (pinacolato)boron units to enones. Angew Chem Int Ed Engl 2014; 53:3387-91. [PMID: 24615958 DOI: 10.1002/anie.201309982] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Indexed: 11/06/2022]
Abstract
The first examples of Lewis base catalyzed enantioselective boryl conjugate additions (BCAs) that generate products containing boron-substituted quaternary carbon stereogenic centers are disclosed. Reactions are performed in the presence of 1.0-5.0 mol% of a readily accessible chiral accessible N-heterocyclic carbene (NHC) and commercially available bis(pinacolato)diboron; cyclic or linear α,β-unsaturated ketones can be used and rigorous exclusion of air or moisture is not necessary. The desired products are obtained in 63-95% yield and 91:9 to >99:1 enantiomeric ratio (e.r.). The special utility of the NHC-catalyzed approach is demonstrated in the context of an enantioselective synthesis of natural product antifungal (-)-crassinervic acid.
Collapse
Affiliation(s)
- Suttipol Radomkit
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467 (USA)
| | | |
Collapse
|
45
|
Kitanosono T, Kobayashi S. Asymmetric Boron Conjugate Additions to Enones in Water Catalyzed by Copper(0). ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300201] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
46
|
Kitanosono T, Xu P, Kobayashi S. Heterogeneous versus Homogeneous Copper(II) Catalysis in Enantioselective Conjugate-Addition Reactions of Boron in Water. Chem Asian J 2013; 9:179-88. [DOI: 10.1002/asia.201300997] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Indexed: 12/22/2022]
|
47
|
Wen K, Chen J, Gao F, Bhadury PS, Fan E, Sun Z. Metal free catalytic hydroboration of multiple bonds in methanol using N-heterocyclic carbenes under open atmosphere. Org Biomol Chem 2013; 11:6350-6. [DOI: 10.1039/c3ob41499j] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
48
|
Kitanosono T, Xu P, Kobayashi S. Heterogeneous and homogeneous chiral Cu(ii) catalysis in water: enantioselective boron conjugate additions to dienones and dienoesters. Chem Commun (Camb) 2013; 49:8184-6. [DOI: 10.1039/c3cc44324h] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|