1
|
Zou S, Zhang Y, Wu Q, Zhao T, Li Y, Liu B, Ma X. Metal-Free, Hindered, Regioselective Access to Multifunctional Groups Diarylamines via S N Ar Substitution of P-Nitroso Aromatic Methyl Ether by Arylamines. Chemistry 2024; 30:e202303421. [PMID: 38010239 DOI: 10.1002/chem.202303421] [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: 10/17/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023]
Abstract
Multifunctional groups diarylamines, an innovative product, efficiently produced from arylamines and p-nitrosoanisole derivatives by intermolecular SN Ar under weak acid conditions. This SN Ar proceeds under mild reaction conditions, and more significantly, the substrates involved do not necessarily require strong electron-withdrawing groups. Moreover, this SN Ar is characterized by resistance to space crowding, tolerance to halogen and nitroso functional groups, and high regioselectivity. Mechanistic observations suggest that the SN Ar is the result of the transfer of the positive charge center of the protonated nitroso group to the p-methoxy group.
Collapse
Affiliation(s)
- Shuliang Zou
- School of Food and Drug Manufacturing Engineering, Guizhou Institute of Technology, Doctor Road, Dangwu Town, Gui'an New District, Guiyang, 550003, PR China
| | - Yazhou Zhang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, No. 4, Dongqing Road, Huaxi District, Guiyang, 550025, PR China
| | - Qin Wu
- School of Food and Drug Manufacturing Engineering, Guizhou Institute of Technology, Doctor Road, Dangwu Town, Gui'an New District, Guiyang, 550003, PR China
| | - Tianming Zhao
- School of Food and Drug Manufacturing Engineering, Guizhou Institute of Technology, Doctor Road, Dangwu Town, Gui'an New District, Guiyang, 550003, PR China
| | - Yutao Li
- School of Food and Drug Manufacturing Engineering, Guizhou Institute of Technology, Doctor Road, Dangwu Town, Gui'an New District, Guiyang, 550003, PR China
| | - Bing Liu
- School of Food and Drug Manufacturing Engineering, Guizhou Institute of Technology, Doctor Road, Dangwu Town, Gui'an New District, Guiyang, 550003, PR China
| | - Xianguo Ma
- School of Chemical Engineering, Guizhou Institute of Technology, Doctor Road, Dangwu Town, Gui'an New District, Guiyang, 550003, PR China
| |
Collapse
|
2
|
Qi Y, Ayinla M, Clifford S, Ramström O. Spontaneous and Selective Macrocyclization in Nitroaldol Reaction Systems. J Org Chem 2023. [PMID: 38154053 DOI: 10.1021/acs.joc.3c02148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Through a dynamic polymerization and self-sorting process, a range of lowellane macrocycles have been efficiently generated in nitroaldol systems composed of aromatic dialdehydes and aliphatic or aromatic dinitroalkanes. All identified macrocycles show a composition of two repeating units, resulting in tetra-β-nitroalcohols of different structures. The effects of the building block structure on the macrocyclization process have been demonstrated, and the influence from the solvent has been explored. In general, the formation of the lowellanes was amplified in response to phase-change effects, although solution-phase structures were, in some cases, favored.
Collapse
Affiliation(s)
- Yunchuan Qi
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, Massachusetts 01854, United States
| | - Mubarak Ayinla
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, Massachusetts 01854, United States
| | - Stephen Clifford
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, Massachusetts 01854, United States
| | - Olof Ramström
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, Massachusetts 01854, United States
- Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
| |
Collapse
|