1
|
Wang Y, Wang Y, Qu J, Yang T, Zhang Y, Yuan C, Guo H, Wang C. BF 3·OEt 2 Catalyzed Cascade [4 + 2] Benzannulation of Vinyloxiranes with Coumarins to Construct Benzocoumarin Derivatives. J Org Chem 2024; 89:9462-9472. [PMID: 38869450 DOI: 10.1021/acs.joc.4c00742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
A BF3·OEt2-catalyzed cascade cyclization reaction of vinyloxirane with coumarin is described, affording the benzocoumarin derivatives with moderate to excellent yields (72-92%). The reaction demonstrates exceptional substrate tolerance and has been extensively explored for its potential in drug development, including scale-up experiments, functional group transformations, and screening of the products for anticancer activity. Moreover, the reaction mechanism has been rigorously validated through intermediate trapping and control experiments. Additionally, this reaction represents the uncommon nonmetal catalyzed intermolecular cyclization of vinyloxiranes.
Collapse
Affiliation(s)
- Yafei Wang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Yujia Wang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Jiaxin Qu
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Tongtong Yang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Yining Zhang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Chunhao Yuan
- School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong 271016, PR China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
| | - Chang Wang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| |
Collapse
|
2
|
Zhang L, Liu Y, Li CX, Zhu L, Xiong GY, Fan SL, Dai JJ, Xiao H. Phosphine-Promoted Tandem Intermolecular Diels-Alder Reactions with Pentadienyl 4-Nitrobenzoate as a Diene Precursor. Org Lett 2023; 25:6506-6510. [PMID: 37624728 DOI: 10.1021/acs.orglett.3c02209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
A phosphine-promoted tandem Diels-Alder reaction using pentadienyl 4-nitrobenzoate (α-vinyl MBH adduct) as a diene precursor with 3-olefinic oxindoles or CF3-activated ketones as dienophiles has been developed. The reaction proceeds through the formation of a pentadienyl phosphonium intermediate via SN2'' addition, which acts as both a D-A diene and a precursor for the exomethylene moiety. This method offers a metal-free and step-efficient approach for synthesizing exomethylene-bearing spirooxindoles and dihydropyrans, which are privileged structures found in natural products.
Collapse
Affiliation(s)
- Le Zhang
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China
| | - Ye Liu
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China
| | - Chao-Xu Li
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China
| | - Lei Zhu
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, 432000, P. R. China
| | - Guo-Yin Xiong
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China
| | - Shi-Lu Fan
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China
| | - Jian-Jun Dai
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China
| | - Hua Xiao
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, 432000, P. R. China
| |
Collapse
|
3
|
Liu W, Zhang L, Liu Y, Fan SL, Dai JJ, Tao W, Zhu HX, Xiao H. Chemoselective tandem S N2'/S N2''/inter- or intramolecular Diels-Alder reaction of γ-vinyl MBH carbonates with phenols and o-hydroxychalcones. Chem Commun (Camb) 2022; 58:9794-9797. [PMID: 35971825 DOI: 10.1039/d2cc03771h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented consecutive SN2'/SN2'' addition of phenol to γ-vinyl MBH carbonate forms a reactive diene intermediate, followed by a dimerization/elimination process to give functionalized exocyclohexenes with excellent chemoselectivity. When using o-hydroxychalcones as pronucleophiles, an SN2'/SN2''/intramolecular Diels-Alder reaction sequence occurs, selectively producing a series of pharmaceutically intriguing tricyclic chromane derivatives with good diastereoselectivity. The good nucleophilicity and fair nucleofugicity exhibited by phenoxy anion play a pivotal role in the SN2'' addition step.
Collapse
Affiliation(s)
- Wei Liu
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China.
| | - Le Zhang
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China.
| | - Ye Liu
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China.
| | - Shi-Lu Fan
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China.
| | - Jian-Jun Dai
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China.
| | - Wei Tao
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China.
| | - Hui-Xia Zhu
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China.
| | - Hua Xiao
- School of Food and Biological Engineering, Hefei University of Technology, 485 Danxia Road, Hefei, 230601, P. R. China. .,Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, P. R. China
| |
Collapse
|
4
|
Almendros P, Esteban P, Herrera F, San Martín D, Luna A. Regioselectivity Switch Based on the Stoichiometry: Stereoselective Synthesis of Trisubstituted Vinyl Epoxides by Cu‐Catalyzed 3‐exo‐trig Cyclization of α‐Allenols. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200592] [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]
|
5
|
Xiao JA, Cheng XL, Peng H, Liang JS, Luo XY, Su W. Diastereoselectivity-Switchable Gold-Catalyzed Formal [3+2]-Cycloadditions of N-2,2,2-Trifluoroethylisatin Ketimines with Yne-Enones. Chem Asian J 2021; 16:2435-2438. [PMID: 34337866 DOI: 10.1002/asia.202100591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/09/2021] [Indexed: 11/10/2022]
Abstract
The unexpected gold-catalyzed formal [3+2]-cycloaddition of N-2,2,2-trifluoroethylisatin ketimines with 2-(1-Alkynyl)-2-alken-1-ones is reported. Both diastereomers of the corresponding cycloadducts were formed in moderate to excellent yields with excellent diastereoselectivities by switching the catalytic system from mono-gold to gold/silver bimetallic catalytic system. The practicality of this protocol is demonstrated by scale-up reaction and the transformations of the cycloadduct.
Collapse
Affiliation(s)
- Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, 530001, Nanning, Guangxi, P. R. China
| | - Xiu-Liang Cheng
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, 530001, Nanning, Guangxi, P. R. China
| | - Hai Peng
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, 530001, Nanning, Guangxi, P. R. China
| | - Jin-Shao Liang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, 530001, Nanning, Guangxi, P. R. China
| | - Xiao-Yan Luo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, 530001, Nanning, Guangxi, P. R. China
| | - Wei Su
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, 530001, Nanning, Guangxi, P. R. China
| |
Collapse
|
6
|
Xu J, Song Y, He J, Dong S, Lin L, Feng X. Asymmetric Catalytic Vinylogous Addition Reactions Initiated by Meinwald Rearrangement of Vinyl Epoxides. Angew Chem Int Ed Engl 2021; 60:14521-14527. [PMID: 33826200 DOI: 10.1002/anie.202102054] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Indexed: 11/08/2022]
Abstract
The first catalytic asymmetric multiple vinylogous addition reactions initiated by Meinwald rearrangement of vinyl epoxides were realized by employing chiral N,N'-dioxide/ScIII complex catalysts. The vinyl epoxides, as masked β,γ-unsaturated aldehydes, via direct vinylogous additions with isatins, 2-alkenoylpyridines or methyleneindolinones, provided a facile and efficient way for the synthesis of chiral 3-hydroxy-3-substituted oxindoles, α,β-unsaturated aldehydes and spiro-cyclohexene indolinones, respectively with high efficiency and stereoselectivity. The control experiments and kinetic studies revealed that the Lewis acid acted as dual-tasking catalyst, controlling the initial rearrangement to match subsequent enantioselective vinylogous addition reactions. A catalytic cycle with a possible transition model was proposed to illustrate the reaction mechanism.
Collapse
Affiliation(s)
- Jinxiu Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yanji Song
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Jun He
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| |
Collapse
|
7
|
Xu J, Song Y, He J, Dong S, Lin L, Feng X. Asymmetric Catalytic Vinylogous Addition Reactions Initiated by Meinwald Rearrangement of Vinyl Epoxides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jinxiu Xu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yanji Song
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Jun He
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| |
Collapse
|
8
|
Xiao JA, Cheng XL, Peng H, Li JL, Xie ZZ, Chen WQ, Liu ZP, Xiao Q, Su W, Yang H. Catalyst-controlled diastereoselective ring-opening formal [3+2]-cycloadditions of arylvinyl oxirane 2,2-diesters with cyclic N-sulfonyl imines. Sci China Chem 2020. [DOI: 10.1007/s11426-019-9760-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
9
|
Luo SQ, Liu W, Ruan BF, Fan SL, Zhu HX, Tao W, Xiao H. P(NMe2)3 mediated cyclopropanation of α-methylene-β-lactams for rapid syntheses of spirocyclopropyl β-lactams. Org Biomol Chem 2020; 18:4599-4603. [DOI: 10.1039/d0ob00826e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A P(NMe2)3-promoted cyclopropanation of a C3-substituted α-methylene-β-lactam provides a rapid and user-friendly method to obtain pharmaceutically intriguing spirocyclopropyl β-lactams under mild reaction conditions.
Collapse
Affiliation(s)
- Si-Qin Luo
- Department of Pharmaceutical Engineering
- Hefei University of Technology
- Hefei 230601
- China
| | - Wei Liu
- Department of Pharmaceutical Engineering
- Hefei University of Technology
- Hefei 230601
- China
| | - Ban-Feng Ruan
- Department of Pharmaceutical Engineering
- Hefei University of Technology
- Hefei 230601
- China
| | - Shi-Lu Fan
- Department of Chemistry
- Hefei University of Technology
- Hefei
- China
| | - Hui-Xia Zhu
- Department of Pharmaceutical Engineering
- Hefei University of Technology
- Hefei 230601
- China
| | - Wei Tao
- Department of Pharmaceutical Engineering
- Hefei University of Technology
- Hefei 230601
- China
| | - Hua Xiao
- Department of Pharmaceutical Engineering
- Hefei University of Technology
- Hefei 230601
- China
- Key Laboratory of Synthetic Chemistry of Natural Substances
| |
Collapse
|
10
|
Sun M, Zhao L, Ding MW. One-Pot–Three-Component Synthesis of 2-(1,2,3,4-Tetrahydroisoquinolin-1-yl)oxazoles via DEAD-Promoted Oxidative Ugi/Wittig Reaction. J Org Chem 2019; 84:14313-14319. [DOI: 10.1021/acs.joc.9b02016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mei Sun
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| | - Long Zhao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| | - Ming-Wu Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| |
Collapse
|
11
|
New facile synthesis of furan-2(3H)-ones and 2,3,5-trisubstituted furans via intramolecular Wittig reaction of acid anhydride. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
12
|
Gu J, Xiao BX, Ouyang Q, Du W, Chen YC. Phosphine-Catalyzed Interrupted Morita-Baylis-Hillman Reaction and Switchable Domino Reactions of α-Substituted Activated Olefins with Formaldehyde and Mechanism Elucidation. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201800466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jing Gu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Ben-Xian Xiao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Qin Ouyang
- College of Pharmacy; Third Military Medical University; Shapingba, Chongqing 400038 China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
- College of Pharmacy; Third Military Medical University; Shapingba, Chongqing 400038 China
| |
Collapse
|
13
|
Thombal RS, Kim ST, Baik MH, Lee YR. Ruthenium catalyzes the synthesis of γ-butenolides fused with cyclohexanones. Chem Commun (Camb) 2019; 55:2940-2943. [DOI: 10.1039/c9cc00101h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combined experimental and computational study for Ru(ii)-catalyzed reactions of cyclic diazodicarbonyl compounds with β-ketoamides for cyclohexanone-fused γ-butenolides is described.
Collapse
Affiliation(s)
- Raju S. Thombal
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Seoung-Tae Kim
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Mu-Hyun Baik
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| |
Collapse
|
14
|
Cong T, Wang H, Li X, Wu HH, Zhang J. Chiral bifunctional bisphosphine enabled enantioselective tandem Michael addition of tryptamine-derived oxindoles to ynones. Chem Commun (Camb) 2019; 55:9176-9179. [DOI: 10.1039/c9cc04357h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A chiral phosphine-catalyzed tandem Michael addition of tryptamine-derived oxindoles to ynones was developed to synthesize spiro[pyrrolidine-3,3′-oxindole] in good yields, good to excellent enantio- and diastereoselectivities.
Collapse
Affiliation(s)
- Tiantian Cong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Huamin Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Xiuzheng Li
- School of Pharmacy
- Anhui Medical University
- Hefei 230032
- P. R. China
| | - Hai-Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| |
Collapse
|
15
|
Takagi R, Fujii E, Kondo H. Enantioselective Michael Reaction of Cyclic β-Ketoesters with Morita-Baylis-Hillman Derivatives Using a Phase-Transfer Catalyst. J Org Chem 2018; 83:11191-11203. [PMID: 30130106 DOI: 10.1021/acs.joc.8b01777] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study aims to develop a highly enantioselective Michael reaction of cyclic β-ketoesters with Morita-Baylis-Hillman (MBH) derivatives using a phase-transfer catalyst. Cyclic β-ketoesters reacted with MBH derivatives to stereoselectively generate a quaternary carbon center in the presence of cinchona alkaloid-derived bulky ammonium catalyst, and aqueous KOH and Michael adducts bearing an acrylate moiety were obtained in good chemical yields with good enantioselectivity.
Collapse
Affiliation(s)
- Ryukichi Takagi
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| | - Emi Fujii
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| | - Hirotoshi Kondo
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| |
Collapse
|
16
|
Liu J, Miotto RJ, Segard J, Erb AM, Aponick A. Catalytic Dehydrative Lactonization of Allylic Alcohols. Org Lett 2018; 20:3034-3038. [PMID: 29737174 DOI: 10.1021/acs.orglett.8b01063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A convenient strategy for the synthesis of phthalides and γ-butyrolactones is reported. The method utilizes readily prepared allylic alcohols in formal Au(I)- and Pd(II)-catalyzed SN2' reactions. Using these catalysts, exclusive formation of the desired five-membered lactones is observed, completely avoiding the competing direct lactonization pathway that forms the undesired seven-membered ring with protic acids and alternative metal salts. This mild and operationally simple method notably tolerates exomethylene groups and should find use in both phthalide and terpene syntheses.
Collapse
Affiliation(s)
- Ji Liu
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Romain J Miotto
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Julien Segard
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Ashley M Erb
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| |
Collapse
|
17
|
Wang YN, Yang LC, Rong ZQ, Liu TL, Liu R, Zhao Y. Pd-Catalyzed Enantioselective [6+4] Cycloaddition of Vinyl Oxetanes with Azadienes to Access Ten-Membered Heterocycles. Angew Chem Int Ed Engl 2018; 57:1596-1600. [DOI: 10.1002/anie.201711648] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/16/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Tang-Lin Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ruoyang Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| |
Collapse
|
18
|
Wang YN, Yang LC, Rong ZQ, Liu TL, Liu R, Zhao Y. Pd-Catalyzed Enantioselective [6+4] Cycloaddition of Vinyl Oxetanes with Azadienes to Access Ten-Membered Heterocycles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711648] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Tang-Lin Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ruoyang Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| |
Collapse
|
19
|
Liu D, Guo W, Wu W, Jiang H. Base-Mediated Three-Component Tandem Reactions for the Synthesis of Multisubstituted Pyrimidines. J Org Chem 2017; 82:13609-13616. [DOI: 10.1021/acs.joc.7b02113] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dongqing Liu
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, Key Laboratory of Functional
Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
| | - Wei Guo
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, Key Laboratory of Functional
Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
- Key
Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wanqing Wu
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, Key Laboratory of Functional
Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, Key Laboratory of Functional
Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
| |
Collapse
|
20
|
Huo J, Hu Z, Chen D, Luo S, Wang Z, Gao Y, Zhang M, Chen H. Preparation and Characterization of Poly-1,2,3-triazole with Chiral 2(5 H)-Furanone Moiety as Potential Optical Brightening Agents. ACS OMEGA 2017; 2:5557-5564. [PMID: 31457821 PMCID: PMC6644745 DOI: 10.1021/acsomega.7b00196] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 05/25/2017] [Indexed: 05/26/2023]
Abstract
A series of novel heterocyclic polymers with fluorescent brightening properties are synthesized via Click polymerization. Fast synthesis of poly-1,2,3-triazoles (M n ≥ 9.31 kDa) is described herein, with a high yield of up to 95%. The Click polymerization approach has a number of advantages, including facile operation and outstanding isolation yield. The resultant polymers have a high thermal stability, excellent UV resistance, as well as acid and light fastness. On embedding with optical brightening agents, the polymers display strong fluorescent brightening properties in the tetrahydrofuran solution. Moreover, these products have a strong solution emission intensity and extraordinary photostability under UV light.
Collapse
Affiliation(s)
- Jingpei Huo
- College
of Materials Science and Energy Engineering, Foshan University, Foshan 528000, P. R. China
- School
of Chemistry and Chemical Engineering, South
China University of Technology, Guangzhou 510641, P. R.
China
| | - Zhudong Hu
- College
of Materials Science and Energy Engineering, Foshan University, Foshan 528000, P. R. China
| | - Dongchu Chen
- College
of Materials Science and Energy Engineering, Foshan University, Foshan 528000, P. R. China
| | - Shihe Luo
- School
of Chemistry and Environment, South China
Normal University, Guangzhou 510006, P. R. China
| | - Zhaoyang Wang
- School
of Chemistry and Environment, South China
Normal University, Guangzhou 510006, P. R. China
| | - Yonghui Gao
- College
of Materials Science and Energy Engineering, Foshan University, Foshan 528000, P. R. China
| | - Min Zhang
- College
of Materials Science and Energy Engineering, Foshan University, Foshan 528000, P. R. China
| | - Hong Chen
- College
of Materials Science and Energy Engineering, Foshan University, Foshan 528000, P. R. China
| |
Collapse
|
21
|
Seo S, Willis MC. A Copper(I)-Catalyzed Addition/Annulation Sequence for the Two-Component Synthesis of γ-Ylidenebutenolides. Org Lett 2017; 19:4556-4559. [DOI: 10.1021/acs.orglett.7b02151] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sangwon Seo
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Michael C. Willis
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| |
Collapse
|
22
|
Yuan ZZ, Kong XW, Liu LH, Zhu HX, Xiao H. Facile synthesis of CF 3 -substituted dienamides via one-pot tandem reactions. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.02.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|