1
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Zuo Q, Shi Z, Zhan F, Wang Z, Lin JS, Jiang Y. TfOH-catalyzed formal [3+2] cycloaddition of N-tosylaziridine dicarboxylates and nitriles: Synthesis of tetrafunctionalized 2-imidazolines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151576] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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2
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Qian B, Chen S, Wang T, Zhang X, Bao H. Iron-Catalyzed Carboamination of Olefins: Synthesis of Amines and Disubstituted β-Amino Acids. J Am Chem Soc 2017; 139:13076-13082. [PMID: 28857555 DOI: 10.1021/jacs.7b06590] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bo Qian
- State
Key Laboratory of Structural Chemistry, Key Laboratory of Coal to
Ethylene Glycol and Its Related Technology, Fujian Institute of Research
on the Structure of Matter, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, People’s Republic of China
| | - Shaowei Chen
- State
Key Laboratory of Structural Chemistry, Key Laboratory of Coal to
Ethylene Glycol and Its Related Technology, Fujian Institute of Research
on the Structure of Matter, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, People’s Republic of China
| | - Ting Wang
- Lab
of Computational Chemistry and Drug Design, Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, People’s Republic of China
| | - Xinhao Zhang
- Lab
of Computational Chemistry and Drug Design, Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, People’s Republic of China
| | - Hongli Bao
- State
Key Laboratory of Structural Chemistry, Key Laboratory of Coal to
Ethylene Glycol and Its Related Technology, Fujian Institute of Research
on the Structure of Matter, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, People’s Republic of China
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3
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Saikia I, Borah AJ, Phukan P. Use of Bromine and Bromo-Organic Compounds in Organic Synthesis. Chem Rev 2016; 116:6837-7042. [PMID: 27199233 DOI: 10.1021/acs.chemrev.5b00400] [Citation(s) in RCA: 287] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bromination is one of the most important transformations in organic synthesis and can be carried out using bromine and many other bromo compounds. Use of molecular bromine in organic synthesis is well-known. However, due to the hazardous nature of bromine, enormous growth has been witnessed in the past several decades for the development of solid bromine carriers. This review outlines the use of bromine and different bromo-organic compounds in organic synthesis. The applications of bromine, a total of 107 bromo-organic compounds, 11 other brominating agents, and a few natural bromine sources were incorporated. The scope of these reagents for various organic transformations such as bromination, cohalogenation, oxidation, cyclization, ring-opening reactions, substitution, rearrangement, hydrolysis, catalysis, etc. has been described briefly to highlight important aspects of the bromo-organic compounds in organic synthesis.
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Affiliation(s)
| | - Arun Jyoti Borah
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
| | - Prodeep Phukan
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
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4
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Wu L, Xie C, Mei H, Dai Y, Han J, Soloshonok VA, Pan Y. Synthesis of trifluoromethyl-containing vicinal diamines by asymmetric decarboxylative mannich addition reactions. J Org Chem 2015; 80:3187-94. [PMID: 25714116 DOI: 10.1021/acs.joc.5b00124] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Herein is reported a study of asymmetric decarboxylative Mannich addition reactions between (Ss)-N-t-butylsulfinyl-3,3,3-trifluoroacetaldimine and Schiff bases derived from various aldehydes and lithium 2,2-diphenylglycinate. These reactions proceed with excellent diastereoselectivities and good chemical yields, providing a practical method for preparation of trifluoromethyl-containing vicinal diamines. The procedures can be conducted under convenient conditions, rendering this approach of high synthetic value.
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Affiliation(s)
- Lingmin Wu
- †School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Chen Xie
- †School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Haibo Mei
- †School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Yanling Dai
- †School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Jianlin Han
- †School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Vadim A Soloshonok
- ‡Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, 20018 San Sebastian, Spain.,§IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Yi Pan
- †School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
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5
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Zhu Y, Cornwall RG, Du H, Zhao B, Shi Y. Catalytic diamination of olefins via N-N bond activation. Acc Chem Res 2014; 47:3665-78. [PMID: 25402963 PMCID: PMC4270412 DOI: 10.1021/ar500344t] [Citation(s) in RCA: 235] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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Vicinal diamines are important structural motifs present in various
biologically and chemically significant molecules. Direct diamination
of olefins provides an effective approach to this class of compounds.
Unlike well-established oxidation processes such as epoxidation, dihydroxylation,
and aminohydroxylation, direct diamination of olefins had remained
a long-standing challenge and had been less well developed. In this Account, we summarize our recent studies on Pd(0)- and
Cu(I)-catalyzed diaminations of olefins using di-tert-butyldiaziridinone and its related analogues as nitrogen sources
via N–N bond activation. A wide variety of imidazolidinones,
cyclic sulfamides, indolines, imidazolinones, and cyclic guanidines
can be obtained from conjugated dienes and terminal olefins. For conjugated
dienes, the diamination proceeds regioselectively at the internal
double bond with the Pd(0) catalyst. Mechanistic studies show that
the diamination likely involves a four-membered Pd(II) species resulting
from the insertion of Pd(0) into the N–N bond of di-tert-butyldiaziridinone. Interestingly, the Cu(I)-catalyzed
process occurs regioselectively at either the terminal or internal
double bond depending on the reaction conditions via two mechanistically
distinct pathways. The Cu(I) catalyst cleaves the N–N bond
of di-tert-butyldiaziridinone to form a Cu(II) nitrogen
radical and a four-membered Cu(III) species, which are likely in rapid
equilibrium. The Cu(II) nitrogen radical and the four-membered Cu(III)
species lead to the terminal and internal diamination, respectively. Terminal olefins are effectively C–H diaminated at the allylic
and homoallylic carbons with Pd(0) as catalyst and di-tert-butyldiaziridinone as nitrogen source, likely involving a diene
intermediate generated in situ from the terminal olefin via formation
of a π-allyl Pd complex and subsequent β-hydride elimination.
When di-tert-butylthiadiaziridine 1,1-dioxide is
used as nitrogen source, cyclic sulfamides are installed at the terminal
carbons via a dehydrogenative diamination process. When α-methylstyrenes
(lacking homoallylic hydrogens) react with Pd(0) and di-tert-butyldiaziridinone, spirocyclic indolines are formed with generation
of four C–N bonds and one spiro quaternary carbon via allylic
and aromatic C–H amination. With Cu(I) catalysts, various
terminal olefins can be effectively
diaminated at the double bonds using di-tert-butyldiaziridinone,
di-tert-butylthiadiaziridine 1,1-dioxide, and 1,2-di-tert-butyl-3-(cyanimino)-diaziridine as nitrogen sources,
giving a variety of imidazolidinones, cyclic sulfamides, and cyclic
guanidines in good yields, respectively. In the case of monosubstituted
olefins using di-tert-butyldiaziridinone as nitrogen
source, the resulting diamination products (imidazolidinones) are
readily dehydrogenated under the reaction conditions, leading to the
corresponding imidazolinones in good yields. Esters can also be diaminated
to form the corresponding hydantoins with di-tert-butyldiaziridinone in the presence of a Cu(I) catalyst. A radical
mechanism is likely to be operating in these Cu(I)-catalyzed reaction
processes. Asymmetric processes have also been developed for
the Pd(0)- and
Cu(I)-catalyzed diamination reactions. Biologically active compounds
such as (+)-CP-99,994 and Sch 425078 have been synthesized via the
diamination processes. The diamination reactions described herein
provide efficient methods to access a wide variety of vicinal diamines
from readily available olefins and show great potential for synthetic
applications.
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Affiliation(s)
- Yingguang Zhu
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Richard G. Cornwall
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Haifeng Du
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Baoguo Zhao
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Yian Shi
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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6
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Zhu Y, Shi Y. Cu(I)-catalyzed sequential diamination and dehydrogenation of terminal olefins: a facile approach to imidazolinones. Chemistry 2014; 20:13901-4. [PMID: 25213994 DOI: 10.1002/chem.201404381] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Indexed: 12/15/2022]
Abstract
Diamination of olefins presents a powerful strategy to access vicinal diamines. During the last decade, metal-catalyzed diamination of olefins has received considerable attention. This study describes an efficient sequential diamination and dehydrogenation process of terminal olefins with CuBr as catalyst and di-tert-butyldiaziridinone as nitrogen source, providing a facile and viable approach to a variety of imidazolin-2-ones, which are important structural motifs present in various biologically active molecules.
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Affiliation(s)
- Yingguang Zhu
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA)
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7
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Kumar Maji P, Ul Islam R, Kumar Bera S. RECENT PROGRESS IN METAL ASSISTED MULTICOMPONENT SYNTHESES OF HETEROCYCLES. HETEROCYCLES 2014. [DOI: 10.3987/rev-13-781] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Cornwall RG, Zhao B, Shi Y. Catalytic asymmetric synthesis of cyclic sulfamides from conjugated dienes. Org Lett 2013; 15:796-9. [PMID: 23362985 PMCID: PMC3587789 DOI: 10.1021/ol303469a] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This paper describes the catalytic asymmetric diamination of alkyl dienes using N,N'-di-tert-butylthiadiaziridine 1,1-dioxide in the presence of Pd(0) and a chiral phosphoramidite ligand to give cyclic sulfamides in high yield and high ee. The diamination is also amenable to gram scale.
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Affiliation(s)
- Richard G. Cornwall
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA)
| | - Baoguo Zhao
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA)
| | - Yian Shi
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523 (USA)
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9
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Abstract
The 1,2-diamine moiety is a ubiquitous structural motif present in a wealth of natural products, including non-proteinogenic amino acids and numerous alkaloids, as well as in pharmaceutical agents, chiral ligands and organic reagents. The biological activity associated with many of these systems and their chemical utility in general has ensured that the development of methods for their preparation is of critical importance. While a wide range of strategies for the preparation of 1,2-diamines have been established, the diamination of alkenes offers a particularly direct and efficient means of accessing these systems. The purpose of this review is to provide an overview of all methods of direct alkene diamination, metal-mediated or otherwise.
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Affiliation(s)
- Sam de Jong
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL, 60607-7061 USA
| | - Daniel G. Nosal
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL, 60607-7061 USA
| | - Duncan J. Wardrop
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL, 60607-7061 USA
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10
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Borah AJ, Phukan P. Efficient synthesis of methyl carbamate via Hofmann rearrangement in the presence of TsNBr2. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Wang YF, Zhu X, Chiba S. Copper-Catalyzed Aerobic [3+2]-Annulation of N-Alkenyl Amidines. J Am Chem Soc 2012; 134:3679-82. [DOI: 10.1021/ja2120629] [Citation(s) in RCA: 166] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yi-Feng Wang
- Division of Chemistry
and Biological Chemistry, School
of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xu Zhu
- Division of Chemistry
and Biological Chemistry, School
of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Shunsuke Chiba
- Division of Chemistry
and Biological Chemistry, School
of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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12
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Zhao B, Peng X, Zhu Y, Ramirez TA, Cornwall RG, Shi Y. Cu(I)-catalyzed diamination of conjugated dienes. Complementary regioselectivity from two distinct mechanistic pathways involving Cu(II) and Cu(III) species. J Am Chem Soc 2011; 133:20890-900. [PMID: 22081888 PMCID: PMC3244543 DOI: 10.1021/ja207691a] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Conjugated dienes can be diaminated at the internal and/or terminal double bonds using Cu(I) as catalyst and N,N-di-t-butyldiaziridinone (1) as nitrogen source. The regioselectivity is highly dependent upon the choice of Cu(I) catalyst and the substituents on diene substrates. The diamination likely proceeds via two mechanistically distinct pathways. The N-N bond of N,N-di-t-butyldiaziridinone (1) is first homolytically cleaved by the Cu(I) catalyst to form four-membered Cu(III) species A and Cu(II) radical species B, which are in rapid equilibrium. The internal diamination likely proceeds in a concerted manner via Cu(III) species A, and the terminal diamination likely involves Cu(II) radical species B. Kinetic studies have shown that the diamination is first-order in N,N-di-t-butyldiaziridinone (1), zero-order in olefin, and first-order in total Cu(I) catalyst, and the cleavage of the N-N bond of 1 by the Cu(I) catalyst is the rate-determining step. The internal diamination is favored by use of CuBr without ligand and electron-rich dienes. The terminal diamination is favored when using CuCl-L and dienes with radical-stabilizing groups.
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Affiliation(s)
- Baoguo Zhao
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
| | - Xingao Peng
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
| | - Yingguang Zhu
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
| | - Thomas A. Ramirez
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
| | | | - Yian Shi
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
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13
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Jiang B, Rajale T, Wever W, Tu SJ, Li G. Multicomponent reactions for the synthesis of heterocycles. Chem Asian J 2011; 5:2318-35. [PMID: 20922748 DOI: 10.1002/asia.201000310] [Citation(s) in RCA: 340] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Multicomponent domino reactions (MDRs) serve as a rapid and efficient tool for the synthesis of versatile heterocycles, particularly those containing structural diversity and complexity, by a one-pot operation. These reactions can dramatically reduce the generation of chemical wastes, costs of starting materials, and the use of energy and manpower. Moreover, the reaction period can be substantially shortened. This Review covers recent advances on multicomponent domino reactions for the construction of five-, six-, and seven-membered heterocyclic skeletons and their multicyclic derivatives.
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Affiliation(s)
- Bo Jiang
- School of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou 221116, Jiangsu, P. R. China
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14
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Cornwall RG, Zhao B, Shi Y. Complementary regioselectivity in the Cu(I)-catalyzed diamination of conjugated dienes to form cyclic sulfamides. Org Lett 2011; 13:434-7. [PMID: 21192669 PMCID: PMC3031742 DOI: 10.1021/ol102767j] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper describes the regioselective diamination of conjugated dienes using inexpensive Cu(I) as catalyst and N,N-di-tert-butylthiadiaziridine 1,1-dioxide as nitrogen source. The regioselectivity of diamination is likely due to dual mechanistic pathways which are greatly influenced by reaction conditions and the nature of the diene. A variety of useful internal and terminal cyclic sulfamides can be obtained in good yield.
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Affiliation(s)
- Richard G. Cornwall
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523
| | - Baoguo Zhao
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523
| | - Yian Shi
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523
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15
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Zhao B, Peng X, Cui S, Shi Y. Cu(I)-catalyzed regioselective diamination of conjugated dienes via dual mechanistic pathways. J Am Chem Soc 2010; 132:11009-11. [PMID: 20698659 DOI: 10.1021/ja103838d] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This paper describes the Cu(I)-catalyzed regioselective diamination of conjugated dienes using di-tert-butyldiaziridinone as nitrogen source. The internal diamination and terminal diamination likely proceed via two mechanistic pathways. Various dienes can be efficiently diaminated at the internal double bonds with high regio- and diasteroselectivity in good yield using inexpensive CuBr as catalyst.
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Affiliation(s)
- Baoguo Zhao
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
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17
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Zhao B, Du H, Cui S, Shi Y. Synthetic and mechanistic studies on Pd(0)-catalyzed diamination of conjugated dienes. J Am Chem Soc 2010; 132:3523-32. [PMID: 20166669 PMCID: PMC2846102 DOI: 10.1021/ja909459h] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Various dienes and a triene can be regioselectively diaminated at the internal double bond with good yields and high diastereoselectivity using di-tert-butyldiaziridinone (5) as the nitrogen source and Pd(PPh(3))(4) (1-10 mol %) as the catalyst. Kinetic studies with (1)H NMR spectroscopy show that the diamination is first-order in total Pd catalyst and inverse first-order in PPh(3). For reactive dienes, such as 1-methoxybutadiene (6g) and alkyl 1,3-butadienes (6a, 6j), the diamination is first-order in di-tert-butyldiaziridinone (5) and zero-order in the olefin. For olefins with relatively low reactivity, such as (E)-1-phenylbutadiene (6b) and (3E,5E)-1,3,5-decatriene (6i), similar diamination rates were observed when 3.5 equiv of olefins were used. Pd(PPh(3))(2) is likely to be the active species for the insertion of Pd(0) into the N-N bond of di-tert-butyldiaziridinone (5) to form a four-membered Pd(II) complex (A), which can be detected by NMR spectroscopy. The olefin complex (B), formed from intermediate A via ligand exchange between the olefin substrate and the PPh(3), undergoes migratory insertion and reductive elimination to give the diamination product and regenerate the Pd(0) catalyst.
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Affiliation(s)
- Baoguo Zhao
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
| | - Haifeng Du
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
| | - Sunliang Cui
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
| | - Yian Shi
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523
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18
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Facile generation of vicinal bromoazides from olefins using TMSN3 and TsNBr2 without any catalyst. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.06.059] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
The 1,2-diamine motif is present in a number of natural products with interesting biological activity and in many important pharmaceutical agents. Chiral 1,2-diamines are also widely used as the control elements in asymmetric synthesis and catalysis. Such compounds are thus an attractive target for the synthetic chemist. Although the diamination of an alkene seems an obvious route to these structures, far less research has been devoted to it than to the analogous dihydroxylation or aminohydroxylation reactions that are well-established processes in asymmetric synthesis. Here, we examine recent advances in metal-catalysed diamination reactions and their asymmetric variants. Given the prevalence of these structures, it seems likely that they will find extensive application in the construction of natural products and drug molecules in the near future.
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Muñiz K, Streuff J, Chávez P, Hövelmann C. Synthesis of Diamino Carboxylic Esters by Palladium-Catalyzed Oxidative Intramolecular Diamination of Acrylates. Chem Asian J 2008; 3:1248-55. [DOI: 10.1002/asia.200800148] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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