1
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Kumar P, Saxena D, Maitra R, Chopra S, Narender T. One-pot synthesis of thioethers from indoles and p-quinone methides using thiourea as a sulfur source. Org Biomol Chem 2023; 21:8289-8293. [PMID: 37814982 DOI: 10.1039/d3ob01312j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Thiourea is an inexpensive and user friendly sulfur reagent that acts as a sulfur source. A simple and efficient protocol has been developed to access thioethers by reacting indoles with p-quinone methides using thiourea as the sulfur source. In our experiments, the reaction apparently proceeded through an S-(3-indolyl)isothiuronium iodide intermediate and subsequent generation of indolethiol that attacked the 1,6 position of p-quinone methides to give desired thioethers in good to excellent yields.
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Affiliation(s)
- Pradeep Kumar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
| | - Deepanshi Saxena
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh, India
| | - Rahul Maitra
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh, India
| | - Sidharth Chopra
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
| | - T Narender
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
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2
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Shuai MS, Guan X, Fei XH, Zhang M, Fu XZ, He B, Zhao YL. Synthesis of diarylmethyl thioethers via a DABCO-catalyzed 1,6-conjugate addition reaction of p-quinone methides with organosulfur reagents. RSC Adv 2023; 13:12982-12990. [PMID: 37124019 PMCID: PMC10132255 DOI: 10.1039/d3ra01815f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 04/14/2023] [Indexed: 05/02/2023] Open
Abstract
A rapid and simple method was developed for the synthesis of diarylmethyl thioethers via a DABCO-catalyzed 1,6-conjugate addition reaction of para-quinone methides (p-QMs) with organosulfur reagents. A series of diarylmethyl thioethers were synthesized at 13-85% yields by this method. After that, the antibacterial activities of synthesized diarylmethyl thioethers and their derivatives were evaluated. The MIC range (μg mL-1) against Staphylococcus aureus ATCC 25923 and clinically isolated methicillin-resistant S. aureus was 8-128 and 64-128, respectively.
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Affiliation(s)
- Ming-Shan Shuai
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Xiang Guan
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Xing-Hai Fei
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Mao Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Xiao-Zhong Fu
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Bin He
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Yong-Long Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
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3
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Azeem Z, Mandal PK. Atom-Economic Synthesis of Unsymmetrical gem-Diarylmethylthio/Seleno Glycosides via Base Mediated C(O)-S/Se Bond Cleavage and Acyl Transfer Approach of Glycosylthio/Selenoacetates. J Org Chem 2023; 88:1695-1712. [PMID: 36633914 DOI: 10.1021/acs.joc.2c02704] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Herein, we invented the Cs2CO3-mediated atom economic method that streamlines the scission of the C(O)-S/Se bond involving the in situ generation of an anomeric thiolate/selenolate anion, which reacted with p-QMs to yield novel unsymmetrical gem-diarylmethylthio/seleno glycosides while retaining the anomeric stereochemistry. Notably, the key features of this protocol involve unprecedented long-range acyl transfer (from S/Se to O), thus affording acylation of the final product which is not yet reported by classical methods. This straightforward protocol offers a mild, short reaction time, synthetically simple approach, and compatibility with 8 types of sugar along with phenylthio/benzylseleno esters.
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Affiliation(s)
- Zanjila Azeem
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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4
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Ali A, Harit HK, Devi M, Ghosh D, Singh RP. Ring Expansion of Isatins via 1,2-Phospha-Brook Rearrangement: A Route to the Synthesis of 2-Quinolinone-Derived p-Quinone Methides. J Org Chem 2022; 87:16313-16327. [PMID: 36459618 DOI: 10.1021/acs.joc.2c01929] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
A Lewis acid-mediated one-carbon homologation approach to installing a 2-quinolinone core embedded with para-quinone methides, in a high yield of up to 92%, and with high regioselectivity has been developed. Also, post-synthetic modifications, including C-P, C-S, and C-C bond formations, have been demonstrated by the 1,6-addition of suitable nucleophiles. Further, cyclopropanation of 2-quinolinone-embedded p-QM is also demonstrated affording a contiguous quaternary spiro center.
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Affiliation(s)
- Amjad Ali
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Harish K Harit
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Manju Devi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Dibyajyoti Ghosh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Ravi P Singh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
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5
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Venkatesh R, Shankar G, Narayanan AC, Modi G, Sabiah S, Kandasamy J. Multicomponent Synthesis of S-Benzyl Dithiocarbamates from para-Quinone Methides and Their Biological Evaluation for the Treatment of Alzheimer's Disease. J Org Chem 2022; 87:6730-6741. [PMID: 35545917 DOI: 10.1021/acs.joc.2c00423] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Multicomponent synthesis of biologically relevant S-benzyl dithiocarbamates from para-quinone methides, amines, and carbon disulfide are described under catalyst and additive-free conditions. The reactions proceeded at room temperature in a short span of time with excellent yields. One of the synthesized compounds, 3e showed considerable acetylcholinesterase (AChE) inhibitory (51.70 + 5.63% at 20 μm) and antioxidant (63.52 ± 1.15 at 20 μm) activities.
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Affiliation(s)
- Rapelly Venkatesh
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Gauri Shankar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Aswathi C Narayanan
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Gyan Modi
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | | | - Jeyakumar Kandasamy
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
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6
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Xiong B, Si L, Liu Y, Xu W, Jiang T, Cao F, Tang KW, Wong WY. Metal-free, Phosphoric Acid-catalyzed Regioselective 1,6-Hydroarylation of para-Quinone Methides with Indoles in Water. Chem Asian J 2022; 17:e202200042. [PMID: 35246930 DOI: 10.1002/asia.202200042] [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: 01/16/2022] [Revised: 02/19/2022] [Indexed: 11/08/2022]
Abstract
An efficient, cheap and green protocol for the highly regioselective 1,6-hydroarylation of para -quinone methides ( p -QMs) with indoles at the C-3 position has been established by phosphoric acid catalysis in water under the transition-metal-free reaction conditions. A wide range of indole derivatives and para -quinone methides ( p -QMs) are compatible for the reaction, affording the corresponding 1,6-hydroarylation products with good to excellent yields. The possible mechanism of the reaction has been explored by step-by-step control experiments. The protocol is convenient for practical application, leading a safe, green and feasible way for the formation of C-3 diarylmethyl functionalized indole derivatives.
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Affiliation(s)
- Biquan Xiong
- Hunan Institute of Science and Technology, Department of Chemistry and Chemical Engineering, Xueyuan Road, 414006, Yueyang, CHINA
| | - Lulu Si
- Hunan Institute of Science and Technology, Department of Chemistry and Chemical Engineering, Xueyuan Road, 414006, Yueyang, CHINA
| | - Yu Liu
- Hunan Institute of Science and Technology, Department of Chemistry and Chemical Engineering, Xueyuan Road, 414006, Yueyang, CHINA
| | - Weifeng Xu
- Hunan Institute of Science and Technology, Department of Chemistry and Chemical Engineering, Xueyuan Road, 414006, Yueyang, CHINA
| | - Tao Jiang
- Hunan Institute of Science and Technology, Department of Chemistry and Chemical Engineering, Xueyuan Road, 414006, Yueyang, CHINA
| | - Fan Cao
- Hunan Institute of Science and Technology, Department of Chemistry and Chemical Engineering, Xueyuan Road, 414006, Yueyang, CHINA
| | - Ke-Wen Tang
- Hunan Institute of Science and Technology, Department of Chemistry and Chemical Engineering, Xueyuan Road, 414006, Yueyang, CHINA
| | - Wai-Yeung Wong
- The Hong Kong Polytechnic University, Department of Applied Biology and Chemical Technology, Hung Hom, Hong Kong, HONG KONG
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7
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Suresh P, Kumari SP, Krishnan K, Ganesan SS. Catalyst‐Free Synthesis of Thioethers through C−N Bond Cleavage of Aminonaphthol/Aminophenol Derivatives. ChemistrySelect 2022. [DOI: 10.1002/slct.202103415] [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)
- Pavithira Suresh
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Subramaniyan Prasanna Kumari
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Keerthana Krishnan
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
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8
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Pankhade YA, Pandey R, Fatma S, Ahmad F, Anand RV. TfOH-Catalyzed Intramolecular Annulation of 2-(Aryl)-Phenyl-Substituted p-Quinone Methides under Continuous Flow: Total Syntheses of Selaginpulvilin I and Isoselagintamarlin A. J Org Chem 2022; 87:3363-3377. [PMID: 35107013 DOI: 10.1021/acs.joc.1c02980] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this article, we describe a convenient method to access 9-aryl fluorene derivatives through a TfOH-catalyzed intramolecular 1,6-conjugate arylation of 2-(aryl)-phenyl-substituted p-quinone methides (QMs) under continuous flow using the microreaction technique. This method was found to be very effective for most of the p-QMs, and the corresponding 9-aryl fluorene derivatives were obtained in moderate to excellent yields. Moreover, this protocol was further elaborated to the first total syntheses of selaginpulvilin I and isoselagintamarlin A.
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Affiliation(s)
- Yogesh A Pankhade
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Rajat Pandey
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Shaheen Fatma
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Feroz Ahmad
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
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9
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Gambacorta G, Sharley JS, Baxendale IR. A comprehensive review of flow chemistry techniques tailored to the flavours and fragrances industries. Beilstein J Org Chem 2021; 17:1181-1312. [PMID: 34136010 PMCID: PMC8182698 DOI: 10.3762/bjoc.17.90] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/22/2021] [Indexed: 12/28/2022] Open
Abstract
Due to their intrinsic physical properties, which includes being able to perform as volatile liquids at room and biological temperatures, fragrance ingredients/intermediates make ideal candidates for continuous-flow manufacturing. This review highlights the potential crossover between a multibillion dollar industry and the flourishing sub-field of flow chemistry evolving within the discipline of organic synthesis. This is illustrated through selected examples of industrially important transformations specific to the fragrances and flavours industry and by highlighting the advantages of conducting these transformations by using a flow approach. This review is designed to be a compendium of techniques and apparatus already published in the chemical and engineering literature which would constitute a known solution or inspiration for commonly encountered procedures in the manufacture of fragrance and flavour chemicals.
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Affiliation(s)
- Guido Gambacorta
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| | - James S Sharley
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| | - Ian R Baxendale
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
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10
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Abstract
The nucleophilic reactivities of substituted thiophenolates were determined by following the kinetics of their reactions with a series of quinone methides (reference electrophiles) in DMSO at 20 °C. The experimentally determined second-order rate constants were analyzed according to the Mayr-Patz equation log k = sN(N + E) to derive the nucleophile-specific reactivity parameters N and sN for ten thiophenolate ions.
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Affiliation(s)
- Patrick M Jüstel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Cedric D Pignot
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Armin R Ofial
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
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11
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Ranga PK, Ahmad F, Nager P, Rana PS, Vijaya Anand R. Bis(amino)cyclopropenium Ion as a Hydrogen-Bond Donor Catalyst for 1,6-Conjugate Addition Reactions. J Org Chem 2021; 86:4994-5010. [PMID: 33721500 DOI: 10.1021/acs.joc.0c02940] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The catalytic application of the bis(amino)cyclopropenium ion has been investigated in conjugate addition reactions. The hydrogen atom, which is attached to the cyclopropene ring of bis(amino)cyclopropenium salts, is moderately acidic and can potentially serve as a hydrogen-bond donor catalyst in some organic transformations. This hypothesis has been successfully realized in the 1,6-conjugate addition reactions of p-quinone methides with various nucleophiles such as indole, 2-naphthol, thiols, phenols, and so forth. The spectroscopic studies (NMR and UV-vis) as well as the deuterium isotope labeling studies clearly revealed that the hydrogen atom (C-H) that is present in the cyclopropene ring of the catalyst is indeed solely responsible for catalyzing these transformations. In addition, these studies also strongly indicate that the C-H hydrogen of the cyclopropene ring activates the carbonyl group of the p-quinone methide through hydrogen bonding.
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Affiliation(s)
- Pavit Kumar Ranga
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Feroz Ahmad
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Prashant Nager
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Prabhat Singh Rana
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
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12
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Xiong B, Xu S, Liu Y, Tang KW, Wong WY. Metal-Free, Acid/Phosphine-Induced Regioselective Thiolation of p-Quinone Methides with Sodium Aryl/Alkyl Sulfinates. J Org Chem 2021; 86:1516-1527. [PMID: 33406835 DOI: 10.1021/acs.joc.0c02390] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A simple and efficient method for the regioselective thiolation of p-quinone methides with sodium aryl/alkyl sulfinates has been established using an acid/phosphine-induced radical route under transition-metal-free conditions. A broad range of sodium aryl/alkyl sulfinates and p-quinone methides (p-QMs) are compatible for the reaction, giving the expected products with good to excellent yields. Control experiments were also performed to gain insights into the generation mechanism of thiyl radicals and hydrogen-atom transfer process. This protocol provides a safe and feasible way for the formation of carbon-sulfur bonds.
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Affiliation(s)
- Biquan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, P. R. China.,Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China
| | - Shipan Xu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, P. R. China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, P. R. China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, P. R. China
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China
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13
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Li H, Pang J, Liu H, Zhao C, Li S, Wang H, Liu X. Sc(OTf) 3-Catalyzed 1,6-Conjugate Addition of Thiols to δ-CF 3- δ-aryl-disubstituted para-Quinone Methides: Efficient Construction of Diarylmethane Thioethers. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202103042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Guan R, Hsu C, Han J. Trifluoroethanol‐mediated Decarboxylative Addition Reactions of β‐Ketoacids with Diverse Electrophiles. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ren‐You Guan
- Department of Chemistry National Chung Hsing University 145 Xingda Rd., South Dist. Taichung City 402 Taiwan R.O.C
| | - Chan‐Wei Hsu
- Department of Chemistry Chung Yuan Christian University 200 Chung Pei Road, Chung Li District Taoyuan City 32023 Taiwan R.O.C
| | - Jeng‐Liang Han
- Department of Chemistry National Chung Hsing University 145 Xingda Rd., South Dist. Taichung City 402 Taiwan R.O.C
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15
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Ren H, Zhang Y, Wang H. Synthesis of aza‐diarylmethines via 1,6‐conjugate addition/aromatization of
para
‐quinone methides and isatin catalyzed by
Et
3
N
. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hong‐Xia Ren
- School of Chemistry and Chemical Engineering Zunyi Normal College Zunyi China
| | - Ying Zhang
- School of Chemistry and Chemical Engineering Zunyi Normal College Zunyi China
| | - Hui‐Ling Wang
- School of Chemistry and Chemical Engineering Zunyi Normal College Zunyi China
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16
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Guin S, Saha HK, Patel AK, Gudimella SK, Biswas S, Samanta S. 1,6-Aza-Michael addition of para-quinone methides with N-heterocycles catalyzed by Zn(OTf)2: A regioselective approach to N-diarylmethyl-substituted heterocycles. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131338] [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]
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17
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Lima CGS, Pauli FP, Costa DCS, de Souza AS, Forezi LSM, Ferreira VF, de Carvalho da Silva F. para
-Quinone Methides as Acceptors in 1,6-Nucleophilic Conjugate Addition Reactions for the Synthesis of Structurally Diverse Molecules. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901796] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Carolina G. S. Lima
- Departamento de Química Orgânica; Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho 24020-150 Niterói RJ Brazil
| | - Fernanda P. Pauli
- Departamento de Química Orgânica; Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho 24020-150 Niterói RJ Brazil
| | - Dora C. S. Costa
- Departamento de Química Orgânica; Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho 24020-150 Niterói RJ Brazil
| | - Acácio S. de Souza
- Departamento de Química Orgânica; Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho 24020-150 Niterói RJ Brazil
| | - Luana S. M. Forezi
- Departamento de Química Orgânica; Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho 24020-150 Niterói RJ Brazil
| | - Vitor F. Ferreira
- Departamento de Tecnologia Farmacêutica; Universidade Federal Fluminense; 24241-000 Niterói RJ Brazil
| | - Fernando de Carvalho da Silva
- Departamento de Química Orgânica; Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho 24020-150 Niterói RJ Brazil
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18
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Liu ZQ, You PS, Zhang LD, Liu DQ, Liu SS, Guan XY. TBAB-Catalyzed 1,6-Conjugate Sulfonylation of para-Quinone Methides: A Highly Efficient Approach to Unsymmetrical gem-Diarylmethyl Sulfones in Water. Molecules 2020; 25:molecules25030539. [PMID: 31991928 PMCID: PMC7038064 DOI: 10.3390/molecules25030539] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/21/2020] [Accepted: 01/24/2020] [Indexed: 12/29/2022] Open
Abstract
A highly efficient sulfonylation of para-quinone methides with sulfonyl hydrazines in water has been developed on the basis of the mode involving a tetrabutyl ammonium bromide (TBAB)-promoted sulfa-1,6-conjugated addition pathway. This reaction provides a green and sustainable method to synthesize various unsymmetrical diarylmethyl sulfones, showing good functional group tolerance, scalability, and regioselectivity. Further transformation of the resulting diarylmethyl sulfones provides an efficient route to some functionalized molecules.
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Affiliation(s)
- Zhang-Qin Liu
- Correspondence: (Z.-Q.L.); (X.-Y.G.); Tel.: +86-023-68252360 (Z.-Q.L. & X.-Y.G.)
| | | | | | | | | | - Xiao-Yu Guan
- Correspondence: (Z.-Q.L.); (X.-Y.G.); Tel.: +86-023-68252360 (Z.-Q.L. & X.-Y.G.)
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19
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Liou YC, Karanam P, Jang YJ, Lin W. Synthesis of Functionalized Benzofurans from para-Quinone Methides via Phospha-1,6-Addition/O-Acylation/Wittig Pathway. Org Lett 2019; 21:8008-8012. [DOI: 10.1021/acs.orglett.9b03001] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yan-Cheng Liou
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
| | - Praneeth Karanam
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
| | - Yeong-Jiunn Jang
- Chinese Medicine Research and Development Center, China Medical University Hospital, 2, Yuh-Der Road, Taichung 40447, Taiwan, R.O.C
| | - Wenwei Lin
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei 11677, Taiwan, R.O.C
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20
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Zhou X, Xu F, Wu Z, Li H, Yang S. Heterogeneous Prolinamide-Catalyzed Atom-Economical Synthesis of β-Thioketones from Bio-Based Enones. ACS OMEGA 2019; 4:8588-8597. [PMID: 31172040 PMCID: PMC6545542 DOI: 10.1021/acsomega.9b00358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 04/30/2019] [Indexed: 05/06/2023]
Abstract
Sulfur-containing compounds are a class of important motifs extensively applied in pharmaceutical and pesticidal industries as well as in electrochemistry, toxicant separation, and organic syntheses. Herein, we describe a novel and efficient metal-free catalytic strategy for the rapid synthesis of β-thioketones from sustainable enone derivatives and thiols via thia-Michael addition enabled by heterogeneous prolinamide. At room temperature, up to 98% yield of β-thioketones could be obtained over the solid UiO-66-NH-proline catalyst facilely prepared by the covalent immobilization of proline onto UiO-66-NH2 (a well-known metal-organic framework) via a stable amido linkage. A cooperative effect of proline (amino group) and UiO-66-NH2 (in situ-derived amide species) was observed to play a promotional role in the proceeding of thia-Michael addition, resulting in a high TOF value of 1124.3 h-1. A three-component "iminium" intermediate was illustrated to the key species approaching the product β-thioketone. Moreover, the UiO-66-NH-proline could be easily recovered from the reaction mixture and recycled for at least five times with a slight loss of activity.
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Affiliation(s)
| | | | | | - Hu Li
- E-mail: . Phone: +86(851)8829-2171. (H.L.)
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21
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More SG, Suryavanshi G. Metal-free, radical 1,6-conjugated addition of cyclic ethers with para-quinone methides (p-QMs). Org Biomol Chem 2019; 17:3239-3248. [DOI: 10.1039/c9ob00127a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient method for metal-free C–C bond formation between p-quinone methides (p-QMs) and cyclic ethers via a radical pathway to afford substituted diarylmethanes and triarylmethanes or to effect the α-alkylation of the cyclic ethers has been developed.
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Affiliation(s)
- Satish G. More
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
- Academy of Scientific and Innovative Research
| | - Gurunath Suryavanshi
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
- Academy of Scientific and Innovative Research
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22
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Tashi M, Shafiee B, Sakamaki Y, Hu JY, Heidrick Z, Khosropour AR, Beyzavi MH. Micro-flow nanocatalysis: synergic effect of TfOH@SPIONs and micro-flow technology as an efficient and robust catalytic system for the synthesis of plasticizers. RSC Adv 2018; 8:37835-37840. [PMID: 35558628 PMCID: PMC9089408 DOI: 10.1039/c8ra07838f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 10/26/2018] [Indexed: 11/21/2022] Open
Abstract
The combination of continuous flow technology with immobilizing of only 0.13 mol% of triflic acid (TfOH) on silica-encapsulated superparamagnetic iron oxide nanoparticles (SPIONs) under solvent-free conditions successfully provided a powerful, efficient, and eco-friendly route for the synthesis of plasticizers. The turnover frequency value in micro-flow conditions varied in the range of 948.7 to 7384.6 h-1 compared to 403.8 to 3099 h-1 for in-flask. This technique works efficiently, encouraging future applications of micro-flow nano-catalysis in green chemistry.
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Affiliation(s)
- Maryam Tashi
- Department of Chemistry, University of Isfahan81746-73441IsfahanIran
| | - Behnaz Shafiee
- Department of Chemistry, University of Isfahan81746-73441IsfahanIran
| | - Yoshie Sakamaki
- Department of Chemistry and Biochemistry, University of ArkansasFayettevilleArkansas 72701USA
| | - Ji-Yun Hu
- Department of Chemistry and Biochemistry, University of ArkansasFayettevilleArkansas 72701USA
| | - Zachary Heidrick
- Department of Chemistry and Biochemistry, University of ArkansasFayettevilleArkansas 72701USA
| | - Ahmad R. Khosropour
- Department of Chemistry, University of Isfahan81746-73441IsfahanIran,Department of Chemistry and Biochemistry, University of ArkansasFayettevilleArkansas 72701USA
| | - M. Hassan Beyzavi
- Department of Chemistry and Biochemistry, University of ArkansasFayettevilleArkansas 72701USA
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23
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Pandey R, Anand RV. Base-Catalyzed 1,6-Conjugate Addition of Nitroalkanes to p-Quinone Methides under Continuous Flow. ACS OMEGA 2018; 3:13967-13976. [PMID: 31458092 PMCID: PMC6644449 DOI: 10.1021/acsomega.8b01971] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 10/15/2018] [Indexed: 06/10/2023]
Abstract
A mild base-catalyzed protocol for the synthesis of substituted nitroalkane derivatives has been developed under continuous flow using a microreaction technique. This transformation basically involves the 1,6-conjugate addition of nitroalkanes to p-quinone methides, leading to the substituted nitroalkanes in good to excellent yields.
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24
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Vaishanv NK, Gupta AK, Kant R, Mohanan K. Fluoride-Mediated α-Selective 1,6-Conjugate Addition of Allenic Esters to p-Quinone Methides. J Org Chem 2018; 83:8759-8767. [DOI: 10.1021/acs.joc.8b01074] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Ashis Kumar Gupta
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | | | - Kishor Mohanan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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25
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Ramanjaneyulu BT, Vishwakarma NK, Vidyacharan S, Adiyala PR, Kim DP. Towards Versatile Continuous-Flow Chemistry and Process Technology Via New Conceptual Microreactor Systems. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11467] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bandaru T. Ramanjaneyulu
- Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 37673 Korea
| | - Niraj K. Vishwakarma
- Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 37673 Korea
| | - Shinde Vidyacharan
- Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 37673 Korea
| | - Praveen Reddy Adiyala
- Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 37673 Korea
| | - Dong-Pyo Kim
- Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 37673 Korea
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26
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Jadhav AS, Pankhade YA, Anand RV. Tandem One-Pot Approach To Access 1,2,3-Triazole-fused Isoindolines through Cu-Catalyzed 1,6-Conjugate Addition of Me3SiN3 to p-Quinone Methides followed by Intramolecular Click Cycloaddition. J Org Chem 2018; 83:8596-8606. [DOI: 10.1021/acs.joc.8b00573] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Abhijeet S. Jadhav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge
City, Manauli (PO), S. A. S. Nagar, Mohali, Punjab 140306, India
| | - Yogesh A. Pankhade
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge
City, Manauli (PO), S. A. S. Nagar, Mohali, Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge
City, Manauli (PO), S. A. S. Nagar, Mohali, Punjab 140306, India
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27
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Goswami P, Sharma S, Singh G, Vijaya Anand R. Bis(amino)cyclopropenylidene Catalyzed Rauhut–Currier Reaction between α,β-Unsaturated Carbonyl Compounds and para-Quinone Methides. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00225] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Prithwish Goswami
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Sonam Sharma
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Gurdeep Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab 140306, India
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28
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Zhang ZP, Chen L, Li X, Cheng JP. Organocatalytic Asymmetric Sequential 1,6-Addition/Acetalization of 1-Oxotetralin-2-carbaldehyde to ortho-Hydroxyphenyl-Substituted para-Quinone Methides for Synthesis of Spiro-3,4-dihydrocoumarins. J Org Chem 2018; 83:2714-2724. [DOI: 10.1021/acs.joc.7b03177] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhi-Pei Zhang
- State Key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Li Chen
- State Key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xin Li
- State Key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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29
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Singh G, Goswami P, Vijaya Anand R. Exploring bis-(amino)cyclopropenylidene as a non-covalent Brønsted base catalyst in conjugate addition reactions. Org Biomol Chem 2018; 16:384-388. [DOI: 10.1039/c7ob02882b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The catalytic application of bis-(amino)cyclopropenylidene, as a non-covalent Brønsted base, in the 1,4- and 1,6-conjugate addition of carbon nucleophiles to enones andp-quinone methides, respectively, is described.
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Affiliation(s)
- Gurdeep Singh
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- India
| | - Prithwish Goswami
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- India
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30
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Zhang ZP, Xie KX, Yang C, Li M, Li X. Asymmetric Synthesis of Dihydrocoumarins through Chiral Phosphoric Acid-Catalyzed Cycloannulation of para-Quinone Methides and Azlactones. J Org Chem 2017; 83:364-373. [DOI: 10.1021/acs.joc.7b02750] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zhi-Pei Zhang
- State key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Kai-Xue Xie
- State key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Chen Yang
- State key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Man Li
- State key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xin Li
- State key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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