1
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Maeda B, Akiyoshi R, Tanaka D, Sato K, Murakami K. Synthesis of N-β-brominated alkenyl isothiocyanates via dehydrogenation of alkyl isothiocyanates. Chem Commun (Camb) 2024; 60:6015-6018. [PMID: 38771143 DOI: 10.1039/d4cc01666a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
This study presents a new dehydrogenative synthesis of alkenyl isothiocyanates, providing compounds with bromo and isothiocyanate groups. These reactive functionalities offer versatility for further transformations. Application in an amine sensor utilizing a coumarin-attached product demonstrates practical utility. This streamlined approach facilitates access to alkenyl isothiocyanates, valuable tools for biological studies.
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Affiliation(s)
- Bumpei Maeda
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
| | - Ryohei Akiyoshi
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
| | - Daisuke Tanaka
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
| | - Kohei Sato
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
| | - Kei Murakami
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
- Japanese Science and Technology Agency (JST)-PRESTO, Chiyoda, Tokyo 102-0076, Japan
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2
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Wang WK, Bao FY, Shang ZW, Zheng J, Zhao SY. Three-Component Assembly of Dihydropyrrolo[3,4- e][1,3]thiazines from Elemental Sulfur, Maleimides, and 1,3,5-Triazinanes. Org Lett 2024; 26:4297-4301. [PMID: 38739778 DOI: 10.1021/acs.orglett.4c01164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
A three-component reaction for the synthesis of dihydropyrrolo[3,4-e][1,3]thiazines has been developed. Elemental sulfur, maleimides, and 1,3,5-triazinanes are assembled together through sulfuration/nucleophilic attack in N-methylpyrrolidin-2-one (NMP) under mild conditions. A small amount of NaHCO3 is important for the activation of the reaction. In this method, sulfur plays a dual role in thiazine ring formation, while triazinanes are utilized as three-atom synthons in the annulation reaction.
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Affiliation(s)
- Wen-Kang Wang
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Fei-Yun Bao
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Zhi-Wei Shang
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Jian Zheng
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
| | - Sheng-Yin Zhao
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, P. R. China
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3
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Das B, Dahiya A, Patel BK. Isothiocyanates: happy-go-lucky reagents in organic synthesis. Org Biomol Chem 2024; 22:3772-3798. [PMID: 38656266 DOI: 10.1039/d4ob00281d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Owing to their unique structural features, isothiocyanates (ITCs) are a class of highly useful and inimitable reagents as the -NCS group serves both as electrophile and nucleophile in organic synthesis. ITCs share a rich legacy in organic, medicinal, and combinatorial chemistry. Compared to their oxygen equivalents, isocyanates, ITCs are easily available, less unpleasant, and somewhat less harmful to work with (mild conditions) which makes them happy-go-lucky reagents. Functionalized ITCs can finely tune the reactivity of the -NCS group and thus can be exploited in the late-stage functionalization processes. This review's primary aim is to outline ITC chemistry in the construction and derivatization of heterocycles through the lens of sustainability. For ease and brevity, the sections are divided based on reactive centers present in functionalized ITCs and modes of cyclisation. Scrutinizing their probable unexplored directions for future research studies is also addressed.
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Affiliation(s)
- Bubul Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
- Department of Chemistry, Bagadhar Brahma Kishan College, Jalah, Assam 781327, India
| | - Anjali Dahiya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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4
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Nguyen CN, Nguyen DT, Tran HA, Mac DH, Nguyen TTT, Retailleau P, Nguyen TB. Base- and sulfur-promoted oxidative lactonization of chalcone-acetate Michael adducts: access to pyran-2-ones. Org Biomol Chem 2024; 22:3871-3875. [PMID: 38651649 DOI: 10.1039/d4ob00479e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
A cost-effective, practical, straightforward and scalable synthesis of α-pyrones via base- and sulfur-promoted annulation of phenylacetates and chalcones is reported. Generated in situ from the starting components by using dbu as a base catalyst, the Michael adducts underwent a smooth oxidative cyclization into 3,4,6-triaryl-2-pyranones upon heating with DABCO and sulfur in DMSO. Extension to malonate in place of phenylacetates led to 4,6-diaryl-2-pyranone-2-carboxylates.
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Affiliation(s)
- Cao Nguyen Nguyen
- Faculty of Chemistry, VNU University of Science, Vietnam National University in Hanoi, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Duc Toan Nguyen
- Faculty of Chemistry, VNU University of Science, Vietnam National University in Hanoi, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Ha An Tran
- Faculty of Chemistry, VNU University of Science, Vietnam National University in Hanoi, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Dinh Hung Mac
- Faculty of Chemistry, VNU University of Science, Vietnam National University in Hanoi, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Thi Thu Tram Nguyen
- Department of Chemistry, Faculty of Basic Science, Can Tho University of Medicine and Pharmacy, Can Tho, Vietnam
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France.
| | - Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France.
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5
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Gupta A, Gururaja GN. Regioselective Addition of Sulfur and Amine Nucleophiles To Assemble S═C-S, S-N, and Umpolung C-N Bonds: Exploration of the -CBr 3 Group as a Synthetic Equivalent of S═C-S. Org Lett 2024; 26:1874-1879. [PMID: 38411402 DOI: 10.1021/acs.orglett.4c00157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
The regioselective addition of sulfur and amine nucleophiles to a -CBr3 unit and nitromethyl moiety in a molecule with the installation of a five-diverse bond structure to novel isothiazole-5(2H)-thione is demonstrated. Umpolung of the nitromethyl group leads to a novel scaffold with selective C-N bond formation. Consequently, differentiating reactive centers by sulfur and amine nucleophiles has been proposed to create unique S-N bonds in conjunction with the dithioate (S═C-S-) moiety. This protocol allows for exploration of the -CBr3 moiety as a synthetic equivalent of the dithioate (S═C-S-) unit during the reaction.
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Affiliation(s)
- Ankush Gupta
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, Gujarat 382030, India
| | - Guddeangadi N Gururaja
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, Gujarat 382030, India
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6
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Maeda B, Murakami K. Recent advancement in the synthesis of isothiocyanates. Chem Commun (Camb) 2024; 60:2839-2864. [PMID: 38380440 DOI: 10.1039/d3cc06118c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Isothiocyanates exhibit various biological characteristics, including antimicrobial, anti-inflammatory, and anticancer properties. Their significance extends to synthetic chemistry, where they serve as valuable platforms for versatile transformations. Consequently, they have attracted the attention of biologists and chemists. This review summarizes recent advancements in the synthesis of isothiocyanates. Access to a variety of starting materials is important to prepare isothiocyanates with diverse structures. This review categorizes synthetic methods into three types based on the starting materials and functional groups: (i) type A, derived from primary amines; (ii) type B, derived from other nitrogen functional groups; and (iii) type C, derived from non-nitrogen groups. Recent trends in synthetic methods have revealed the prevalence of type-A reactions derived from primary amines. However, type B reactions have rarely been reported. Notably, over the past four years, there has been a notable increase in type C reactions, indicating a growing interest in non-nitrogen-derived isothiocyanates. Overall, this review not only outlines the advancements in the synthesis of isothiocyanates but also highlights trends in the methodology.
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Affiliation(s)
- Bumpei Maeda
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
| | - Kei Murakami
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda, Hyogo 669-1330, Japan.
- Japanese Science and Technology Agency (JST)-PRESTO, Chiyoda, Tokyo 102-0076, Japan
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7
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Huynh TN, Ong KTN, Dinh PT, Nguyen AT, Nguyen TT. Elemental Sulfur Promoted Cyclization of Aryl Hydrazones and Aryl Isothiocyanates Yielding 2-Imino-1,3,4-thiadiazoles. J Org Chem 2024; 89:3202-3210. [PMID: 38329896 DOI: 10.1021/acs.joc.3c02675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
We report a method for using elemental sulfur to facilitate the cyclization of aryl hydrazones and aryl isothiocyanates, affording biorelated 2-imino-1,3,4-thiadiazoles. Reactions progressed in the presence of elemental sulfur, N-methylmorpholine base, and DMSO solvent, while were tolerant of a wide range of functionalities including halogen, nitro, cyano, methylsulfonyl, and heterocyclic groups. The method appears to offer a general pathway for using simple, cheap, and stable reagents to afford triaryl-substituted 2-imino-1,3,4-thiadiazoles under relatively mild conditions.
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Affiliation(s)
- Tan N Huynh
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 84, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
| | - Khanh T N Ong
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
- VNU-HCM Key Laboratory for Functional Organic Materials, Ho Chi Minh City 84, Vietnam
| | - Phuong T Dinh
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
- VNU-HCM Key Laboratory for Functional Organic Materials, Ho Chi Minh City 84, Vietnam
| | - Anh T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 84, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
| | - Tung T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 84, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 84, Vietnam
- VNU-HCM Key Laboratory for Functional Organic Materials, Ho Chi Minh City 84, Vietnam
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8
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Matsuoka J, Yano Y, Hirose Y, Mashiba K, Sawada N, Nakamura A, Maegawa T. Elemental Sulfur-Mediated Aromatic Halogenation. J Org Chem 2024; 89:770-777. [PMID: 38113515 DOI: 10.1021/acs.joc.3c02259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
A method for aromatic halogenation using a combination of elemental sulfur (S8) and N-halosuccinimide has been developed. A catalytic quantity of elemental sulfur (S8) with N-bromosuccinimide (NBS) and N-chlorosuccinimide (NCS) effectively halogenated less-reactive aromatic compounds, such as ester-, cyano-, and nitro-substituted anisole derivatives. No reaction occurred in the absence of S8, underscoring its crucial role in the catalytic activity. This catalytic system was also applicable to aromatic iodination with 1,3-diiodo-5,5-dimethylhydantoin.
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Affiliation(s)
- Junpei Matsuoka
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Yuna Yano
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Yuuka Hirose
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Koushi Mashiba
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Nanako Sawada
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Akira Nakamura
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tomohiro Maegawa
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
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9
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Kumar N, Sharma A, Kumar U, Pandey SK. Multicomponent Reaction of CS 2, Amines, and Sulfoxonium Ylides in Water: Straightforward Access to β-Keto Dithiocarbamates, Thiazolidine-2-thiones, and Thiazole-2-thiones. J Org Chem 2023; 88:6120-6125. [PMID: 37018423 DOI: 10.1021/acs.joc.2c02763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Simple, versatile, and catalyst-free synthetic methods for β-keto dithiocarbamates, thiazolidine-2-thiones, and thiazole-2-thiones via the multicomponent reaction of CS2, amines, and sulfoxonium ylides have been described. The β-keto sulfoxonium ylides furnished β-keto dithiocarbamates in the presence of CS2 and secondary amines, whereas primary amines afforded thiazolidine-2-thiones or thiazole-2-thiones after dehydration in an acidic environment. With simple procedures, the reaction has a wide substrate scope and excellent functional group tolerance.
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Affiliation(s)
- Naveen Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Ajay Sharma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Upendra Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Satyendra Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
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10
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Farajpour B, Alizadeh A. Base-Promoted Reaction of 4-Chloro-3-vinyl Coumarins, Phenacylpyridinium Bromides, and Elemental Sulfur: A Designed Approach to Thiopyrano[4,3- c]chromen-5(1 H)-ones. J Org Chem 2022; 87:13837-13844. [PMID: 36198088 DOI: 10.1021/acs.joc.2c01542] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A designed synthesis of thiopyrano[4,3-c]chromen-5(1H)-ones was developed based on a base-promoted three-component reaction between 4-chloro-3-vinyl coumarins, phenacylpyridinium bromides, and elemental sulfur. Readily available starting materials, mild conditions, chemoselectivity, operational simplicity, and synthetically useful yields are some highlighted advantages of these transformations.
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Affiliation(s)
- Behnaz Farajpour
- Department of Chemistry, Tarbiat Modares University, Tehran14115-175, Iran
| | - Abdolali Alizadeh
- Department of Chemistry, Tarbiat Modares University, Tehran14115-175, Iran
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11
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Maeda B, Aihara Y, Sato A, Kinoshita T, Murakami K. Photoinduced Synthesis of Thiocyanates through Hydrogen Atom Transfer and One-Pot Derivatization to Isothiocyanates. Org Lett 2022; 24:7366-7371. [PMID: 36194477 DOI: 10.1021/acs.orglett.2c02896] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photoinduced benzylic C-H thiocyanation is described. A series of alkyl thiocyanates were efficiently obtained by using Selectfluor as the oxidant. Moreover, we accomplished the one-pot isothiocyanation following the C-H thiocyanation. The thiocyanates and isothiocyanates were applied to the divergent transformation of pharmaceuticals.
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Affiliation(s)
- Bumpei Maeda
- Department of Chemistry, School of Science, Kwansei Gakuin University, 2-1 Gakuin, Sanda, Hyogo 669-1337, Japan
| | - Yusuke Aihara
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Ayato Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Toshinori Kinoshita
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Kei Murakami
- Department of Chemistry, School of Science, Kwansei Gakuin University, 2-1 Gakuin, Sanda, Hyogo 669-1337, Japan.,JST-PRESTO, 7 Gobancho, Chiyoda, Tokyo 102-0076, Japan
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12
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Zeng J, Wan JP, Liu Y. Photocatalytic C–H Thiocyanation of NH 2-Enaminones and the Tunable Synthetic Routes to 2-Aminothiazoles and 2-Thiazolinones. J Org Chem 2022; 87:13195-13203. [DOI: 10.1021/acs.joc.2c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junlong Zeng
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Yunyun Liu
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Zhejiang 312000, P.R. China
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13
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Nguyen TB, Retailleau P. DABCO-Catalyzed Reaction of 2-Naphthols with Aryl Isothiocyanates: Access to 2-Iminonaphtho-1,3-oxathioles. Org Lett 2022; 24:6676-6680. [PMID: 36048584 DOI: 10.1021/acs.orglett.2c02736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2-Naphthols 1 were found to react with aryl isothiocyanates 2 to provide 2-iminonaphtho-1,3-oxathioles 3 in the presence of DABCO as a catalyst. When elemental sulfur was used, moderate to good yields of 3 could be achieved from a nearly equimolar mixture of two starting materials 1 and 2. Products 3 could also be formed in the absence of sulfur or an external oxidant. In the latter case, an additional equivalent of 2 was found to act as a dehydrogenating agent.
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Affiliation(s)
- Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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14
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Huynh TN, Huynh TV, Ca TT, Tran DT, Pham HH, Nguyen TT, Phan NTS. Annulation of 2’‐Chlorochalcones and Elemental Sulfur toward the Synthesis of 2‐Aryl Thiochromenones. ChemistrySelect 2022. [DOI: 10.1002/slct.202201732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tan N. Huynh
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Tien V. Huynh
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Thuy T. Ca
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Dat T. Tran
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Hai H. Pham
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Tung T. Nguyen
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Nam T. S. Phan
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
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15
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Wu M, Yan C, Zhuang D, Yan R. Metal-Free C-S Bond Formation in Elemental Sulfur and Cyclobutanol Derivatives: The Synthesis of Substituted Thiophenes. Org Lett 2022; 24:5309-5313. [PMID: 35838239 DOI: 10.1021/acs.orglett.2c01907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A general approach for the metal-free synthesis of thiophenes by tert-cyclobutanols and elemental sulfur has been developed. This protocol provides a strategy for constructing multisubstituted thiophene derivatives via C-S bond formation under air. This reaction shows good functionality tolerance under the reaction conditions, and the mechanism is validated by control experiments and density functional theory calculations.
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Affiliation(s)
- Mingzhong Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Chaoxian Yan
- College of Chemistry and Chemical Engineering, Ankang University, Ankang 725000, P. R. China
| | - Daijiao Zhuang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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16
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Yuan L, Liu J, Huang K, Wang S, Jin Y, Lin J. Cascade Reaction of Tertiary Enaminones, KSCN, and Anilines: Temperature-Controlled Synthesis of 2-Aminothiazoles and 2-Iminothiazoline. J Org Chem 2022; 87:9171-9183. [PMID: 35786913 DOI: 10.1021/acs.joc.2c00918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-pot cascade strategy for the synthesis of 2-aminothiazole derivatives by tertiary enaminones, KSCN, and anilines was developed. By changing the reaction temperature, the three-component reaction could be transformed in different ways to obtain moderate to good yields of polysubstituted 2-aminothiazoles and 2-iminothiazolines. This protocol provides an efficient and concise approach to accessing 2-aminothiazole derivatives with potential bioactivity from readily accessible building blocks and reagents.
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Affiliation(s)
- Liu Yuan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jin Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Kun Huang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Siyu Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Yi Jin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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17
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Németh AG, Szabó R, Németh K, Keserű GM, Ábrányi-Balogh P. A stepwise one-pot synthesis of aliphatic thiols and their derivatives from acrylamides and sulfur. Org Biomol Chem 2022; 20:4361-4368. [PMID: 35575267 DOI: 10.1039/d2ob00512c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elemental sulfur enables the convenient formation of C-S bonds and the direct incoporation of S-S bonds. The reactivity of easily accessible electron deficient alkenes towards sulfur, however, is barely disclosed. Herein, we investigated the reactivity of acrylamides with sulfur and eventually developed a new pseudo-multicomponent reaction for the preparation of polysulfides. Sequential one-pot reduction led to diversely substituted thiols. Additional third stage one-pot modifications provided thioethers, unsymmetric disulfide and thioester.
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Affiliation(s)
- András Gy Németh
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary.
| | - Renáta Szabó
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary.
| | - Krisztina Németh
- MS Metabolomics Research Laboratory, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - György M Keserű
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary.
| | - Péter Ábrányi-Balogh
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary.
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18
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Liu L, Zhang J. KI/K2S2O8 Mediated Cascade C(sp3)‐H/C(sp2)‐H Thiolation for the Synthesis of Multi‐Substituted Thiazoles. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200161] [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)
- Lang Liu
- Northwest University College of Chemistry & Materials Science Xuefu avenue 710127 xi'an CHINA
| | - Jun Zhang
- Northwest University College of Chemistry & Materials Science Xuefu avenue 710069 Xi'an CHINA
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19
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Zhou YJ, Yang K, Fang YG, Luo SH, Chen Q, Yu SW, Wang ZY. A novel NaHCO3 promoted three‐component cyclization: Easy access to benzodisulfide heterocycles. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200170] [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)
- Yong-Jun Zhou
- South China Normal University School of Chemistry CHINA
| | - Kai Yang
- Gannan Medical University College of Pharmacy CHINA
| | - Yong-Gan Fang
- South China Normal University School of Chemistry CHINA
| | - Shi-He Luo
- South China Normal University School of Chemistry CHINA
| | - Qi Chen
- South China Normal University School of Chemistry CHINA
| | - Shi-Wei Yu
- South China Normal University School of Chemistry CHINA
| | - Zhao-Yang Wang
- South China Normal University School of Chemistry and Environment School of Chemistry and Environment, South China Normal University, Guangzhou 510006 guangzhou CHINA
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20
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Convenient Synthesis of Triphenylphosphine Sulfide from Sulfur and Triphenylphosphine. CLEAN TECHNOLOGIES 2022. [DOI: 10.3390/cleantechnol4020013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Elemental sulfur (S8) was found to react very rapidly (<1 min) with a stoichiometric amount of triphenylphosphine at rt in sufficient amount of solvent (0.2–0.5 mL of solvent/1 mmol of PPh3). Compared to the previously described methods, the present procedure constitute excellent access to triphenylphosphine sulfide.
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21
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Chen L, Xuchen X, Wang F, Yang Y, Deng G, Liu Y, Liang Y. Double C-S bond formation via multiple Csp 3-H bond cleavage: synthesis of 4-hydroxythiazoles from amides and elemental sulfur under metal-free conditions. Org Biomol Chem 2021; 19:10068-10072. [PMID: 34762083 DOI: 10.1039/d1ob01989a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A novel and efficient approach for the synthesis of 4-hydroxythiazoles from amides and elemental sulfur has been developed. In the presence of P2O5, DMSO and HMPA, this metal-free protocol proceeds smoothly and tolerates a spectrum of functional groups. Furthermore, this strategy involves the process of double Csp3-S bond formation through the cleavage of multiple Csp3-H bonds for the first time.
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Affiliation(s)
- Liang Chen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China. .,Huaihua Normal College, Huaihua 418008, China
| | - Xinyu Xuchen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Fei Wang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Yuan Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China. .,Ministry of Education Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Yilin Liu
- Institute of Organic Synthesis, College of Chemistry and Materials Engineering, Huaihua University, Huaihua 418008, China.
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
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