1
|
Li H, Cheng L, Li G, Xu T, Zhang S, Zeng F. Copper-Catalyzed Asymmetric Boroprotonation of Phosphinylallenes. Org Lett 2023; 25:488-493. [PMID: 36637444 DOI: 10.1021/acs.orglett.2c04180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Synthesis of chiral phosphorus compounds from readily available substrates by a facile method is an attractive strategy. In this study, an efficient route for copper-catalyzed asymmetric boroprotonation of phosphinylallenes with bis(pinacolato)diboron with high regioselectivity was developed, affording chiral allylphosphine oxides in high yields with high enantioselectivities of up to 98% ee. The synthetic utility was further demonstrated by the facile transformation of the chiral allylphosphine oxides to several stereospecific products.
Collapse
Affiliation(s)
- Huijun Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi'an 710127, P. R. China
| | - Long Cheng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi'an 710127, P. R. China
| | - Guiqin Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi'an 710127, P. R. China
| | - Tongyu Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi'an 710127, P. R. China
| | - Shengjun Zhang
- State Energy Key Lab of Clean Coal Grading Conversion, Modern Chemical Technology Department, Shaanxi Key Laboratory of Low Rank Coal Pyrolysis, Shaanxi Coal and Chemical Technology Institute Co., Ltd., 166 Seventh Shenzhou Road, Xi'an 710100, P. R. China
| | - Fanlong Zeng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi'an 710127, P. R. China
| |
Collapse
|
2
|
Stereodivergently asymmetric synthesis of chiral phosphorus compounds by synergistic combination of ion-pair catalyst and base. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1337-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
3
|
Pei M, Tian A, Yang Q, Huang N, Wang L, Li D. Organophosphorus catalytic reaction based on reduction of phosphine oxide. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
4
|
Abstract
The current review is devoted to the achievements in the development of methods for the catalytic asymmetric synthesis of phosphonates containing a chiral center in the side chain. C-chiral phosphonates are widely represented among natural compounds with various biological activities as insecticides, herbicides, antibiotics, and bioregulators. Synthetic representatives of this class have found practical application as biologically active compounds. The review summarizes methods of asymmetric metal complex catalysis and organocatalysis as applied to such reactions as phospha-aldol reaction, two-component and three-component phospha-Mannich reaction, phospha-Michael reaction, as well as hydrogenation of unsaturated phosphonates and phosphine oxides, ketophosphonates, and iminophosphonates. Methods for the asymmetric hydride reduction of C=X phosphonates (X=O, S, NR) are also discussed in detail. The review presents updated literature reports, as well as original research by the author.
Collapse
|
5
|
Chen Q, Zheng X, Guo F, Liang K, Zhou F. Transition-Metal-Free Addition of Dialkyl Phosphites to Phthalazin-2-ium Bromide: Synthesis of α-Aminophosphonate Analogues. J Org Chem 2021; 86:18278-18286. [PMID: 34870429 DOI: 10.1021/acs.joc.1c02024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
α-Aminophosphonate analogues containing a phthalazine skeleton were efficiently obtained by a new transition-metal-free addition of dialkyl phosphites to phthalazin-2-ium bromide under mild conditions. A mechanistic study using isotope labeling and radical inhibition experiment revealed that the present transformation passes through a nucleophilic addition of dialkyl phosphates, rather than an insertion of P-H to carbenes.
Collapse
Affiliation(s)
- Qian Chen
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
| | - Xuanming Zheng
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
| | - Fang Guo
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
| | - Kun Liang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Fanrui Zhou
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| |
Collapse
|