1
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Goswami D, Mishra D, Phukan P. Silver acetate-catalyzed synthesis of cyclic sulfonyl guanidine with exocyclic double bond. Mol Divers 2023; 27:2545-2553. [PMID: 36376719 DOI: 10.1007/s11030-022-10568-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/05/2022] [Indexed: 11/16/2022]
Abstract
An efficient protocol for the synthesis of cyclic guanidine with exocyclic double bond has been developed. The synthesis has been achieved via intramolecular hydroamination of an intermediate propargyl guanidine by using silver acetate as catalyst in the presence of acetic acid. The reaction proceeds via the formation of acyclic propargyl guanidine in a one-pot reaction of N,N-dibromoarylsulfonamides, isonitriles, and propargylamine in the presence of K2CO3. In the second stage of the synthesis, the acyclic guanidine selectively undergoes 5-exo-dig cyclization in the presence of silver acetate and acetic acid to produce the five-membered cyclic guanidine framework having an exocyclic double bond as the constituent part. Short reaction time, wide substrate scope with good to high yields, and good functional group tolerance are the remarkable achievement of the present protocol.
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Affiliation(s)
- Dikshita Goswami
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India
| | - Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India.
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2
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Mishra D, Rajkhowa S, Phukan P. Unanticipated switch of reactivity of isonitrile via N≡C bond scission: Cascade formation of symmetrical sulfonyl guanidine. iScience 2023; 26:107258. [PMID: 37520733 PMCID: PMC10384224 DOI: 10.1016/j.isci.2023.107258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/02/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Unanticipated formation of symmetrical sulfonyl guanidine was observed while treating isonitriles with N,N-dibromoarylsulfonamides in absence of an external amine source. Interesting feature of this work is that one molecule of isonitrile initially reacts with dibromoarylsulfonamide via the C-end to produce the intermediate carbodiimide while the other molecule undergoes C≡N triple bond cleavage to react as amine source with the intermediate. This switch of reactivity from C-center to N-center of the isonitrile generated symmetrical guanidine.
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Affiliation(s)
- Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Sagarika Rajkhowa
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
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3
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Mishra D, Loukrakpam DC, Neog SR, Hazarika D, Phukan P. A Switchable Protocol for Selective Synthesis of
gem
‐Dibromo Compounds and Amides from Ketoximes using TsNBr
2. ChemistrySelect 2022. [DOI: 10.1002/slct.202203449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Debashish Mishra
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
| | | | - Smriti Rekha Neog
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
| | - Debojit Hazarika
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
| | - Prodeep Phukan
- Department of Chemistry Gauhati University Guwahati 781014 Assam India
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4
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Affiliation(s)
- Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
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5
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Mishra D, Borah AJ, Phukan P, Hazarika D, Phukan P. Unprecedented 1,3-tert-butyl migration via the C–N single bond scission of isonitrile: an expedient metal-free route to N-sulfonyl amidines. Chem Commun (Camb) 2020; 56:8408-8411. [DOI: 10.1039/d0cc02430a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of tert-butyl isonitrile with ArSO2NBr2 and nitrile led to simultaneous C–N single bond scission of isonitrile and migration of tert-alkyl group to nitrogen centre of the nitrile precursor, resulting in the formation of N-sufonyl amidine.
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6
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Loukrakpam DC, Phukan P. Metal‐Free One‐Pot Conversion of Olefins and Alkynes to Amides Using TsNBr
2
, I
2
and Aqueous NH
3
at Room Temperature. ChemistrySelect 2019. [DOI: 10.1002/slct.201901530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Prodeep Phukan
- Department of ChemistryGauhati University, Guwahati 781014 Assam India
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7
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Loukrakpam DC, Phukan P. TsNBr2Mediated Synthesis of 2‐Acylbenzothiazoles and Quinoxalines from Aryl Methyl Ketones under Metal Free Condition. ChemistrySelect 2019. [DOI: 10.1002/slct.201900713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Prodeep Phukan
- Department of ChemistryGauhati University Guwahati 781014 Assam India
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8
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Hazarika D, Phukan P. TsNBr2 promoted decarboxylative bromination of α,β-unsaturated carboxylic acids. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.11.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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9
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Seidl FJ, Min C, Lopez JA, Burns NZ. Catalytic Regio- and Enantioselective Haloazidation of Allylic Alcohols. J Am Chem Soc 2018; 140:15646-15650. [PMID: 30403852 DOI: 10.1021/jacs.8b10799] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein we report a highly regio- and stereoselective haloazidation of allylic alcohols. This enantioselective reaction uses readily available materials and can be performed on a variety of alkyl-substituted alkenes and can incorporate either bromine or chlorine as the electrophilic halogen component. Both halide and azido groups of the resulting products can be transformed into valuable building blocks with complete stereospecificity. The first example of an enantioselective 1,4-haloazidation of a conjugated diene is reported as well as its application to a concise synthesis of an aza-sugar.
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Affiliation(s)
- Frederick J Seidl
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Chang Min
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Jovan A Lopez
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Noah Z Burns
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
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10
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Loukrakpam DC, Phukan P. CuI catalyzed sulfamidation of arylboronic acid using TsNBr2 at room temperature. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.11.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Zhou P, Lin L, Chen L, Zhong X, Liu X, Feng X. Iron-Catalyzed Asymmetric Haloazidation of α,β-Unsaturated Ketones: Construction of Organic Azides with Two Vicinal Stereocenters. J Am Chem Soc 2017; 139:13414-13419. [PMID: 28862434 DOI: 10.1021/jacs.7b06029] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Organic azides play important roles in synthetic chemistry, chemical biology, drug discovery, and material science. Azido-functionalization of alkenes is one of the most efficient procedures for rapid introduction of azide group into organic compounds. But only a few examples have been documented in the catalytic asymmetric version of the azidation of alkenes. Herein, we report an unprecedented highly diastereo- and enantioselective bromoazidation of α,β-unsaturated ketones catalyzed by chiral N,N'-dioxide/Fe(OTf)2 complexes. An array of aryl, heteroaryl, and alkyl substituted α,β-unsaturated ketones were transformed to the corresponding α-bromo-β-azido ketones in high yields with excellent diastereo- and enantioselectivities. The catalytic system was also applicable for chloroazidation and iodoazidation of chalcone. Kinetic studies and some control experiments suggested that the reaction might proceed via a 1,4-addition/halogenation pathway.
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Affiliation(s)
- Pengfei Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, China
| | - Long Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, China
| | - Xia Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, China.,Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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12
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Soliman HA, Khatab TK, Abdel-Megeid FM. Utilization of bromine azide to access vicinal-azidobromides from arylidene malononitrile. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.03.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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14
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Rajbongshi KK, Saikia I, Chanu LD, Roy S, Phukan P. A Metal-Free Protocol for Aminofunctionalization of Olefins Using TsNBr2. J Org Chem 2016; 81:5423-32. [PMID: 27269517 DOI: 10.1021/acs.joc.6b00785] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
N,N-Dibromo-p-toluene sulfonamide (TsNBr2) has been found to be an effective reagent for various aminofunctionalization reactions. This reagent behaves both as an electrophilic bromine source as well as amine to react with olefins under different conditions to yield aminoether, imidazoline, diamine and amino bromine. The reaction proceeds rapidly under mild conditions with high regioselectivity. Olefins react with TsNBr2 in moist THF to form δ-amino ether at room temperature. Treatment of TsNBr2 with olefin in MeCN at room temperature produced imidazoline in high yield. Further modification of the reaction condition resulted in the development of a one-step procedure for the synthesis of N-acetyl,N'-tosyl diamine derivatives directly from olefin. When the olefin was treated with 2.4 mol equiv of TsNBr2 in the presence of K2CO3, N,N'-ditosyl diamine derivative was obtained in moderate yield. Instantaneous formation of aminobromine was observed when an olefin was treated with the reagent in dry CH2Cl2 at room temperature.
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Affiliation(s)
| | | | | | - Subhasish Roy
- Department of Chemistry, Gauhati University , Guwahati 781014, Assam, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University , Guwahati 781014, Assam, India
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15
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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: 283] [Impact Index Per Article: 35.4] [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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16
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Wu K, Liang Y, Jiao N. Azidation in the Difunctionalization of Olefins. Molecules 2016; 21:352. [PMID: 26999085 PMCID: PMC6274056 DOI: 10.3390/molecules21030352] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 02/12/2016] [Accepted: 03/09/2016] [Indexed: 02/06/2023] Open
Abstract
Organic azides are key motifs in compounds of relevance to chemical biology, medicinal chemistry and materials science. In addition, they also serve as useful building blocks due to their remarkable reactivity. Therefore, the development of efficient protocols to synthesize these compounds is of great significance. This paper reviews the major applications and development of azidation in difunctionalization of olefins using azide reagents.
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Affiliation(s)
- Kai Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing 100191, China.
| | - Yujie Liang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing 100191, China.
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing 100191, China.
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17
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Semina E, Žukauskaitė A, Šačkus A, De Kimpe N, Mangelinckx S. Selective Elaboration of Aminodiols towards Small Ring α- and β-Amino Acid Derivatives that Incorporate an Aziridine, Azetidine, or Epoxide Scaffold. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Valiulin RA, Mamidyala S, Finn MG. Taming Chlorine Azide: Access to 1,2-Azidochlorides from Alkenes. J Org Chem 2015; 80:2740-55. [DOI: 10.1021/acs.joc.5b00009] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roman A. Valiulin
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic
Drive, Atlanta, Georgia 30332-0400, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Sreeman Mamidyala
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - M. G. Finn
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic
Drive, Atlanta, Georgia 30332-0400, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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19
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20
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Rajbongshi KK, Sarma MJ, Phukan P. A catalyst-free protocol for direct oxidative esterification of alcohols and aldehydes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.124] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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22
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Selective liquid phase oxidation of secondary alcohols into ketones by tert-butyl hydroperoxide on nano-fibrous Ag-OMS-2 catalyst. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.09.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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In situ slow release of isocyanates: synthesis and organocatalytic application of N-acylureas. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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25
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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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26
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Saikia I, Rajbongshi KK, Phukan P. A simple and efficient bromoformyloxylation and bromoacetoxylation reaction using TsNBr2. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.11.138] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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27
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Lu J, Xu J, Ni LW, Ma WL, Du ZT. 4-[4-(1H-Tetra-zol-5-yl)phen-oxy]benzaldehyde. Acta Crystallogr Sect E Struct Rep Online 2012; 67:o3106. [PMID: 22220109 PMCID: PMC3247491 DOI: 10.1107/s1600536811044254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 10/24/2011] [Indexed: 11/10/2022]
Abstract
The asymmetric unit of the title compound, C(14)H(10)N(4)O(2), contains two independent mol-ecules with similar structures. In one mol-ecule, the tetra-zole ring is oriented at dihedral angles of 17.71 (16) and 57.13 (17)°, respectively, to the central benzene ring and the terminal benzene ring; in the other mol-ecule, the corresponding dihedral angles are 16.46 (18) and 75.87 (18)°. Inter-molecular N-H⋯N hydrogen bonds and weak C-H⋯O and C-H⋯N hydrogen bonds occur in the crystal structure.
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Affiliation(s)
- Jing Lu
- College of Science, Northwest A&F University, Yangling Shaanxi 712100, People's Republic of China
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28
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Borah AJ, Phukan P. A highly efficient catalyst-free protocol for C–H bond activation: sulfamidation of alkyl aromatics and aldehydes. Chem Commun (Camb) 2012; 48:5491-3. [DOI: 10.1039/c2cc31258a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Saikia I, Kashyap B, Phukan P. A facile noncatalytic pathway for the nitrene transfer process: expeditious access to aziridines. Chem Commun (Camb) 2011; 47:2967-9. [DOI: 10.1039/c0cc05387b] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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