1
|
Yang Y, Song Q, Sivaguru P, Liu Z, Shi D, Tian T, de Ruiter G, Bi X. Controllable Skeletal and Peripheral Editing of Pyrroles with Vinylcarbenes. Angew Chem Int Ed Engl 2024; 63:e202401359. [PMID: 38597885 DOI: 10.1002/anie.202401359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/14/2024] [Accepted: 04/09/2024] [Indexed: 04/11/2024]
Abstract
The skeletal editing of azaarenes through insertion, deletion, or swapping of single atoms has recently gained considerable momentum in chemical synthesis. Here, we describe a practical skeletal editing strategy using vinylcarbenes in situ generated from trifluoromethyl vinyl N-triftosylhydrazones, leading to the first dearomative skeletal editing of pyrroles through carbon-atom insertion. Furthermore, depending on the used catalyst and substrate, three types of peripheral editing reactions of pyrroles are also disclosed: α- or γ-selective C-H insertion, and [3+2] cycloaddition. These controllable molecular editing reactions provide a powerful platform for accessing medicinally relevant CF3-containing N-heterocyclic frameworks, such as 2,5-dihydropyridines, piperidines, azabicyclo[3.3.0]octadienes, and allylated pyrroles from readily available pyrroles. Mechanistic insights from experiments and density functional theory (DFT) calculations shed light on the origin of substrate- or catalyst-controlled chemo- and regioselectivity as well as the reaction mechanism.
Collapse
Affiliation(s)
- Yong Yang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Qingmin Song
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | | | - Zhaohong Liu
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Dan Shi
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Tian Tian
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Graham de Ruiter
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technol-ogy Technion City, 3200008, Haifa, Israel
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| |
Collapse
|
2
|
Guo Y, Zhang Y, Chen L, Dai X, Zhang X, Meng F, Gao Z. Enantioselective Construction of Chiral THIQUINOL and Its Derivatives via Chiral Phosphoric Acid Catalysis. Org Lett 2024; 26:3569-3574. [PMID: 38648520 DOI: 10.1021/acs.orglett.4c01000] [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
The first catalytic enantioselective construction of chiral THIQUINOL and its derivatives has been accomplished through a chiral phosphoric-acid-catalyzed direct aza-Friedel-Crafts reaction of 3,4-dihydroisoquinolines with 2-naphthols/anthracen-2-ols/phenanthren-9-ol. This method offers a powerful and straightforward synthetic route toward chiral THIQUINOL derivatives with good to excellent yields and enantioselectivities. These structural motifs are crucial chiral components for further transformations into established or potential chiral ligands and catalysis.
Collapse
Affiliation(s)
- Yongbiao Guo
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Ye Zhang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
- Sichuan University of Science & Engineering, Zigong 643002, China
| | - Lina Chen
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Xiandong Dai
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Xujin Zhang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
- Sichuan University of Science & Engineering, Zigong 643002, China
| | - Fanhua Meng
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Zhenhua Gao
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| |
Collapse
|
3
|
Li L, Chen H, Liu M, Zhu Q, Zhang H, de Ruiter G, Bi X. Silver-Catalyzed Dearomative Skeletal Editing of Indazoles by Donor Carbene Insertion. Chemistry 2024; 30:e202304227. [PMID: 38199953 DOI: 10.1002/chem.202304227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/12/2024]
Abstract
Given the prevalence of heterocyclic scaffolds in drug-related molecules, converting these highly modular heterocyclic scaffolds into structural diversified and dearomatized analogs is an ideal strategy for improving their physicochemical and pharmacokinetic properties. Here, we described an efficient method for silver carbene-mediated dearomative N-N bond cleavage leading to skeletal hopping between indazole and 1,2-dihydroquinazoline via a highly selective single-carbon insertion procedure. Using this methodology, a series of dihydroquinazoline analogues with diarylmethylene-substituted quaternary carbon centers were constructed with excellent yields and good functional group compatibility, which was further illustrated by the late-stage diversification of important pharmaceutically active ingredients. DFT calculations indicated that the silver catalyst not only induces the formation of the silver carbene, but also activates the diazahexatriene intermediate, which plays a crucial role in the formation of the C-N bond.
Collapse
Affiliation(s)
- Linxuan Li
- Department of Chemistry, Northeast Normal University, 130024, Changchun, China
| | - Hongzhu Chen
- Department of Chemistry, Northeast Normal University, 130024, Changchun, China
| | - Menglin Liu
- Department of Chemistry, Northeast Normal University, 130024, Changchun, China
| | - Qingwen Zhu
- Department of Chemistry, Northeast Normal University, 130024, Changchun, China
| | - Hongru Zhang
- Department of Chemistry, Northeast Normal University, 130024, Changchun, China
| | - Graham de Ruiter
- Schulich Faculty of Chemistry, Technion Israel Institute of Technology, Technion City, 3200008, Haifa, Israel
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, 130024, Changchun, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 300071, Tianjin, China
| |
Collapse
|
4
|
Li L, Ning Y, Chen H, Ning Y, Sivaguru P, Liao P, Zhu Q, Ji Y, de Ruiter G, Bi X. Dearomative Insertion of Fluoroalkyl Carbenes into Azoles Leading to Fluoroalkyl Heterocycles with a Quaternary Center. Angew Chem Int Ed Engl 2024; 63:e202313807. [PMID: 37966100 DOI: 10.1002/anie.202313807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/16/2023]
Abstract
The skeletal ring expansion of heteroarenes through carbene insertion is gaining popularity in synthetic chemistry. Efficient strategies for heterocyclic ring expansion to access heterocycles containing a fluoroalkyl quaternary carbon center through fluoroalkyl carbene insertion are highly desirable because of their broad applications in medicinal chemistry. Herein, we report a general strategy for the dearomative one-carbon insertion of azoles using fluoroalkyl N-triftosylhydrazones as fluoroalkyl carbene precursors, resulting in ring-expanded heterocycles in excellent yields with good functional-group compatibility. The broad generality of this methodology in the late-stage diversification of pharmaceutically interesting bioactive molecules and versatile transformations of the products has been demonstrated.
Collapse
Affiliation(s)
- Linxuan Li
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Yongquan Ning
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Hongzhu Chen
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Yongyue Ning
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | | | - Peiqiu Liao
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Qingwen Zhu
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Yong Ji
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Graham de Ruiter
- Schulich Faculty of Chemistry, Technion Israel Institute of Technology, Technion City, 3200008, Haifa, Israel
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| |
Collapse
|
5
|
Gan Q, Liu H, Jiang Z, Xia J, Gao Z, Guo Y, Wen H. Aerobic oxidative C-H phosphorylation of quinoxalines under catalyst-free conditions. Chem Commun (Camb) 2023; 59:11089-11092. [PMID: 37642316 DOI: 10.1039/d3cc02848h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
We herein report a direct and efficient protocol for phosphorylation of quinoxalines, which employs aerobic oxygen as the green oxidant under catalyst-free conditions. This methodology represents one of the most environmentally friendly and easily handled protocols, providing a series of phosphorylated quinoxalines in good to excellent yields. Control experiments clearly indicated that the reaction followed a dearomatization-rearomatization strategy.
Collapse
Affiliation(s)
- Qiaoyu Gan
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, Beijng 102488, P. R. China.
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Haibo Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Zeqi Jiang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Junmei Xia
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Zhenhua Gao
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Yongbiao Guo
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Hongliang Wen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, Beijng 102488, P. R. China.
| |
Collapse
|