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Giorgioni G, Bonifazi A, Matucci R, Matteucci F, Piergentili A, Piergentili A, Quaglia W, Gervasoni S, Vistoli G, Vittorio S, Del Bello F. New potent muscarinic receptor ligands bearing the 1,4-dioxane nucleus: Investigation on the nature of the substituent in position 2. Arch Pharm (Weinheim) 2024:e2400337. [PMID: 39054609 DOI: 10.1002/ardp.202400337] [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: 05/02/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/27/2024]
Abstract
A new series of muscarinic acetylcholine receptor (mAChR) ligands obtained by inserting different substituents in position 2 of the potent 6,6-diphenyl-1,4-dioxane antagonists 4 and 5 was designed and synthesized to investigate the influence of steric bulk on the mAChR affinity. Specifically, the insertion of a 2-methyl group, affording compounds 6 and 9, resulted as the most favorable modification in terms of affinity for all muscarinic subtypes. As supported by computational studies performed on the hM1 receptor, this substituent may contribute to stabilize the ligand within the binding site by favoring the formation of stable interactions between the cationic head of the ligand and the residue D105. The increase of steric bulk, obtained by replacing the methyl group with an ethyl (7 and 10) and especially a phenyl substituent (8 and 11), caused a marked decrease of mAChR affinity, demonstrating the crucial role played by the steric bulk of the 2-substituent in the mAChR interaction. The most intriguing result was obtained with the tertiary amine 9, which, surprisingly, showed two different pKi values for all mAChRs, with preferential subpicomolar affinities for the M1, M3, and M4 subtypes. Interestingly, biphasic curves were also observed with both the eutomer (S)-(-)-9 and the distomer (R)-( + )-9.
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Affiliation(s)
- Gianfabio Giorgioni
- Scuola di Scienze del Farmaco e dei Prodotti della Salute, Università degli Studi di Camerino, Camerino, Italy
| | - Alessandro Bonifazi
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse-Intramural Research Program, National Institutes of Health, Baltimore, USA
| | - Rosanna Matucci
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino (NEUROFARBA), Sezione di Farmacologia e Tossicologia, Università degli Studi di Firenze, Firenze, Italy
| | - Federica Matteucci
- Scuola di Scienze del Farmaco e dei Prodotti della Salute, Università degli Studi di Camerino, Camerino, Italy
| | - Alessandro Piergentili
- Scuola di Scienze del Farmaco e dei Prodotti della Salute, Università degli Studi di Camerino, Camerino, Italy
| | - Alessia Piergentili
- Scuola di Scienze del Farmaco e dei Prodotti della Salute, Università degli Studi di Camerino, Camerino, Italy
| | - Wilma Quaglia
- Scuola di Scienze del Farmaco e dei Prodotti della Salute, Università degli Studi di Camerino, Camerino, Italy
| | - Silvia Gervasoni
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria di Monserrato, Monserrato, Italy
| | - Giulio Vistoli
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy
| | - Serena Vittorio
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy
| | - Fabio Del Bello
- Scuola di Scienze del Farmaco e dei Prodotti della Salute, Università degli Studi di Camerino, Camerino, Italy
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2
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Yu YC, Sung YC, Fu JH, Peng WS, Yu YC, Li J, Chan YT, Tsai FY. Nickel-Catalyzed Suzuki-Miyaura Coupling in Water for the Synthesis of 2-Aryl Allyl Phosphonates and Sulfones. J Org Chem 2024; 89:2448-2458. [PMID: 38275288 PMCID: PMC10877605 DOI: 10.1021/acs.joc.3c02455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/11/2023] [Accepted: 01/08/2024] [Indexed: 01/27/2024]
Abstract
An operationally simple and green protocol using a NiSO4·6H2O/cationic 2,2'-bipyridyl ligand system as a water-soluble catalyst for the coupling of arylboronic acids with (2-haloallyl)phosphonates and (2-haloallyl)sulfones in water under air was developed. The reaction was performed at 120 °C with arylboronic acids (2 mmol) and (2-haloallyl)phosphonates or sulfones (1 mmol) in the presence of 5 mol % of the Ni catalytic system in a basic aqueous solution for 1 h, giving the corresponding 2-aryl allyl phosphonates or sulfones in good to excellent yields. This reaction features the use of an abundant transition metal as a catalyst in water and exhibits high functional group tolerance, rendering it an eco-friendly procedure.
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Affiliation(s)
- Yu-Chen Yu
- Department
of Molecular Science and Engineering, National
Taipei University of Technology, Taipei 10608, Taiwan
| | - Yun-Chiao Sung
- Institute
of Organic and Polymeric Materials, National
Taipei University of Technology, Taipei 10608, Taiwan
| | - Jun-Hao Fu
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Wen-Sheng Peng
- Institute
of Organic and Polymeric Materials, National
Taipei University of Technology, Taipei 10608, Taiwan
| | - Yu-Chia Yu
- Institute
of Organic and Polymeric Materials, National
Taipei University of Technology, Taipei 10608, Taiwan
| | - Juyun Li
- Institute
of Organic and Polymeric Materials, National
Taipei University of Technology, Taipei 10608, Taiwan
| | - Yi-Tsu Chan
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Fu-Yu Tsai
- Department
of Molecular Science and Engineering, National
Taipei University of Technology, Taipei 10608, Taiwan
- Institute
of Organic and Polymeric Materials, National
Taipei University of Technology, Taipei 10608, Taiwan
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3
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Hardy D, Isbel SR, Bugarin A, Wagle DV. Quantum Chemical Insight into 1,2-Shift Rearrangement in Bromination of Allylaryls. ACS OMEGA 2023; 8:42311-42318. [PMID: 38024757 PMCID: PMC10652718 DOI: 10.1021/acsomega.3c04513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 10/09/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023]
Abstract
In this work, we have provided mechanistic insight into the addition of bromine to an allylic double bond of allylaryl derivatives using experimental and DFT-based electronic structure methods. The experimental yields indicate the influence of the functional group on the aryl ring on the ratio of 1,2-dibromo and 1,3-dibromo adducts formed in the reaction. The optimized geometry and the electron density maps of the allylaryls and their cationic intermediates from DFT simulations revealed that electron-rich aryl rings promoted formation of cationic spiro[2.5] intermediate II, whereas electron-poor aryl rings resulted in formation of bromonium intermediate I. It was observed that electron-rich allylaryls promoted the 1,2-shift of the aryl ring that resulted in bond formation between the carbon atom (C1) on the aryl ring and the central carbon atom (C3) in the allylic double bond and formed spiro[2.5] intermediate II, a trend which was confirmed by harmonic oscillator model of aromaticity index. Also, Wiberg bond order analysis is in good agreement with the experimental work. Thermochemical analysis indicates that smaller C1···C3 distance resulted in favorable values for the difference in free energy change (ΔΔG). The favorable ΔΔG values are a result of higher electron density on the aryl ring, making it more nucleophilic toward C3 carbon and promoting 1,2-shift that led to formation of the spiro[2.5] intermediate. Thus, the underlying mechanism indicates that the electron-rich allylaryls promote the formation of 1,3-dibromo compounds through formation and stabilization of the spiro[2.5] intermediate II.
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Affiliation(s)
- David Hardy
- Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, Florida 33965, United States
| | - Stephen R. Isbel
- Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, Florida 33965, United States
| | - Alejandro Bugarin
- Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, Florida 33965, United States
| | - Durgesh V. Wagle
- Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, Florida 33965, United States
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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.
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Ojo O, Bugarin A. One-Pot Synthesis of α-Alkyl Styrene Derivatives. ACS OMEGA 2021; 6:20619-20628. [PMID: 34396007 PMCID: PMC8359136 DOI: 10.1021/acsomega.1c02801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
There is a significant need to develop more rapid and efficient routes to styrene derivatives, since they are extensively used in polymer sciences. This manuscript reports a one-pot synthesis of an array of α-alkyl styrene derivatives from readily available natural products (i.e., estragole and safrole). This method is regioselective, producing a rearranged adduct, under transition metal-free conditions. This methodology has broad nucleophile scope, even tolerating sterically hindered nucleophiles; it is general for carbon, nitrogen, oxygen, and sulfur nucleophiles.
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Affiliation(s)
- Olatunji
S. Ojo
- Department
of Chemistry and Biochemistry, University
of Texas at Arlington, Arlington, Texas 76019, United States
| | - Alejandro Bugarin
- Department
of Chemistry and Physics, Florida Gulf Coast
University, Fort Myers, Florida 33965, United States
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Guo L, Zhao W, Li M, Dong S, Gong J, Chen S. CuI‐Catalyzed coupling reaction of diazophosphonates with ferrocenylacetylenes: an efficient synthesis of ferrocene‐containing allenylphosphonates. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Le Guo
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical EngineeringInner Mongolia University Hohhot 010021 People's Republic of China
- College of Chemical EngineeringOrdos Institute of Technology Ordos 017000 People's Republic of China
| | - Wanrong Zhao
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical EngineeringInner Mongolia University Hohhot 010021 People's Republic of China
| | - Min Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical EngineeringInner Mongolia University Hohhot 010021 People's Republic of China
| | - Shuqi Dong
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical EngineeringInner Mongolia University Hohhot 010021 People's Republic of China
| | - Jianye Gong
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical EngineeringInner Mongolia University Hohhot 010021 People's Republic of China
| | - Shufeng Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical EngineeringInner Mongolia University Hohhot 010021 People's Republic of China
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Zhu H, Chen C, Li D, Wang P, Wang Y, Bai L, Yang D, Wang L. Direct Synthesis of a Dioxabenzobicyclo[3.2.1]octane Core from Salicylaldehydes. J Org Chem 2018; 83:12897-12902. [PMID: 30234985 DOI: 10.1021/acs.joc.8b01873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A copper(II) trifluoromethanesulfonate via Prins reaction between salicylaldehydes and allyl alcohols is realized under mild conditions. A series of compounds containing dioxabenzobicyclo[3.2.1]octane motifs are obtained in moderate to good yields. The current method can efficiently construct the valuable structural motif from easily accessed starting materials, providing a smooth method to build benzobicyclo skeletons.
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Affiliation(s)
- Haiyong Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Chao Chen
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology , Peking University Shenzhen Graduate School , Shenzhen 518055 , China
| | - Dan Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Pengxin Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Yuan Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Lutao Bai
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
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Wu X, Li X, Yang C, Li B, Chen S. Copper-Catalyzed Multicomponent Amination/Alkynylative Cycloisomerization Cascade: Facile Access to Ferrocene-Containing Indolizine Derivatives. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700081] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xinxing Wu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 People's Republic of China
| | - Xiaojie Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 People's Republic of China
| | - Chunyan Yang
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 People's Republic of China
| | - Baoguo Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 People's Republic of China
| | - Shufeng Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis; Department of Chemistry and Chemical Engineering; Inner Mongolia University; Hohhot 010021 People's Republic of China
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9
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One-pot Synthesis of Terminal Vinylphosphonates Catalyzed by Pyridine Grafted GO as Reusable Acid-Base Bifunctional Catalyst. ChemistrySelect 2016. [DOI: 10.1002/slct.201600517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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10
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Affiliation(s)
- Wenzhen Fu
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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11
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Arae S, Nakajima K, Takahashi T, Ogasawara M. Enantioselective Desymmetrization of 1,2,3-Trisubstituted Metallocenes by Molybdenum-Catalyzed Asymmetric Intraannular Ring-Closing Metathesis. Organometallics 2015. [DOI: 10.1021/om5011484] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sachie Arae
- Catalysis Research Center and Graduate
School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Kiyohiko Nakajima
- Department of Chemistry, Aichi University of Education, Igaya, Kariya, Aichi 448-8542, Japan
| | - Tamotsu Takahashi
- Catalysis Research Center and Graduate
School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Masamichi Ogasawara
- Catalysis Research Center and Graduate
School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
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12
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Pi C, Cui X, Liu X, Guo M, Zhang H, Wu Y. Synthesis of ferrocene derivatives with planar chirality via palladium-catalyzed enantioselective C-H bond activation. Org Lett 2014; 16:5164-7. [PMID: 25247387 DOI: 10.1021/ol502509f] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The first catalytic and enantioselective C-H direct acylation of ferrocene derivatives has been developed. A series of 2-acyl-1-dimethylaminomethylferrocenes with planar chirality were provided under highly efficient and concise one-pot conditions with up to 85% yield and 98% ee. The products obtained could be easily converted to various chiral ligands via diverse transformations.
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Affiliation(s)
- Chao Pi
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Department of Chemistry, Zhengzhou University , Zhengzhou 450052, P. R. China
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13
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Kolodiazhnyi OI. Advances in Asymmetric Hydrogenation and Hydride Reduction of Organophosphorus Compounds. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2014.905778] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Oleg I. Kolodiazhnyi
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Murmanska Str., 1, Kiev, Ukraine
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14
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Asymmetric catalysis as a method for the synthesis of chiral organophosphorus compounds. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.05.010] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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15
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Duan Z, Wang L, Zuo X, Hu X, Zheng Z. Rh-ImiFerroPhos complexes catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated hosphonates. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(12)60742-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hornillos V, Pérez M, Fañanás-Mastral M, Feringa BL. Cu-catalyzed asymmetric allylic alkylation of phosphonates and phosphine oxides with Grignard reagents. Chemistry 2013; 19:5432-41. [PMID: 23447457 DOI: 10.1002/chem.201204364] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Indexed: 11/10/2022]
Abstract
An efficient and highly enantioselective copper-catalyzed allylic alkylation of phosphonates and phosphine oxides with Grignard reagents and Taniaphos or phosphoramidites as chiral ligands is reported. Transformation of these products leads to a variety of new phosphorus-containing chiral intermediates.
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Affiliation(s)
- Valentín Hornillos
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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17
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Enantioselective synthesis of optically active alkylphosphonates via Rh-catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated phosphonates. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.03.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Adventure in Asymmetric Hydrogenation: Synthesis of Chiral Phosphorus Ligands and Asymmetric Hydrogenation of Heteroaromatics. TOP ORGANOMETAL CHEM 2011. [DOI: 10.1007/978-3-642-19472-6_10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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19
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Hong B, Ma Y, Zhao L, Duan W, He F, Song C. Synthesis of planar chiral imidazo[1,5-a]pyridinium salts based on [2.2]paracyclophane for asymmetric β-borylation of enones. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.06.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Duan ZC, Hu XP, Zhang C, Zheng Z. Enantioselective Rh-Catalyzed Hydrogenation of 3-Aryl-4-phosphonobutenoates with a P-Stereogenic BoPhoz-Type Ligand. J Org Chem 2010; 75:8319-21. [DOI: 10.1021/jo101849b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zheng-Chao Duan
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Graduate School of Chinese Academy of Sciences, Beijing 100039, China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Cheng Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Graduate School of Chinese Academy of Sciences, Beijing 100039, China
| | - Zhuo Zheng
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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Wang CJ, Xu ZP, Wang X, Teng HL. Axial [6,6′-(2,4-pentadioxy)]-1,1′-biphenyl-2,2′-diamine (PD-BIPHAM): practical synthesis and applications in asymmetric hydrogenation. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.073] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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