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  • Aminobromination of olefins with TsNH2 and NBS as

    Cited by: 88
  • ChemInform Abstract: Aminobromination of Olefins

    ChemInform Abstract: Aminobromination of Olefins with TsNH 2 and NBS as the Nitrogen and Bromine Sources Mediated by Hypervalent Iodine in a Ball Mill. Xue‐Liang Wu. Hefei Natl. Lab. Phys. Sci. Microscale, Univ. Sci. Technol. China, Hefei 230026, Peop. Rep. China.

  • Chiral Hypervalent Iodine Reagents in Asymmetric

    All hyper : Recent advances in the area of chiral hypervalent iodine reagents, notably by the groups of Kita, Ishihara, and Fujita, enable some oxidative transformations to be conducted in an enantioselective manner and with asymmetric inductions in the range of 86–95 % ee (see scheme, Mes=mesityl). This contribution highlights representative ...

  • Aminations with Hypervalent Iodine - ResearchGate

    A hypervalent iodine-promoted intermolecular diamination reactions of C60 with sulfamides or phosphoryl diamides affords two classes of novel C60-fused cyclic sulfamide or phosphoryl diamide ...

  • Aminobromination of olefins with TsNH2 and NBS as

    Aminobromination of olefins with TsNH2 and NBS as the nitrogen and bromine sources mediated by hypervalent iodine in a ball mill Article in Organic Biomolecular Chemistry 6(3):548-53 March ...

  • Molecules Free Full-Text Hypervalent Iodine

    Hypervalent iodine oxidants have played a key role in the advancement of this field, analogous to their prominent role in the development of Pd(II)/Pd(IV) catalysis (see Section 2.1). In order to put modern approaches into context, we will begin with a brief history of isolated Ni(IV) complexes accessed via a variety of methods.

  • Glycosylation Reaction of Thioglycosides by Using ...

    Nowadays, the environmentally-benign hypervalent iodine oxidation has witnessed significant progress in the field of organic chemistry. 18–30) We have been engaged in the development of the oxidation of the sulfur atom utilizing hypervalent iodine reagents to form an active iodonium intermediate. 31,32) Thus, we have recently developed novel ...

  • Solvent-Free Reactions with Hypervalent Iodine

    2019-5-26  Solvent-Free One Pot Synthesis of 2-aryl/Heteroarylbenzothiazoles Using Hypervalent Iodine (III) Reagents. Journal of Heterocyclic Chemistry 2012, 49 (5) , 1243-1249. DOI: 10.1002/jhet.962. Liam T. Ball, Guy C. Lloyd-Jones, Christopher A. Russell.

  • Electrophilic Trifluoromethylation by Use of

    2019-5-25  Another approach to modulate the reactivity of hypervalent iodine-based trifluoromethylation reagents is to modify the electronic properties of the aromatic ring system. We hypothesized that rendering the hypervalent iodine center more electron-deficient should increase its propensity toward reduction, thus enhancing the reactivity.

  • Phenol Dearomatization with Hypervalent Iodine

    Zhdankin VV (2013) Hypervalent iodine chemistry – preparation, structure, and synthetic applications of polyvalent iodine compounds. Wiley, ... Peixoto PA, Boulangé A, Ball M, Naudin B, Alle T, Cosette P, Karuso P, Franck X (2014) J Am Chem Soc 136:15248–15256 CrossRef Google Scholar.

  • Aminations with Hypervalent Iodine - ResearchGate

    A hypervalent iodine-promoted intermolecular diamination reactions of C60 with sulfamides or phosphoryl diamides affords two classes of novel C60-fused cyclic sulfamide or phosphoryl diamide ...

  • Molecules Free Full-Text Hypervalent Iodine

    Hypervalent iodine oxidants have played a key role in the advancement of this field, analogous to their prominent role in the development of Pd(II)/Pd(IV) catalysis (see Section 2.1). In order to put modern approaches into context, we will begin with a brief history of isolated Ni(IV) complexes accessed via a variety of methods.

  • Aminobromination of olefins with TsNH(2) and NBS as

    2008-2-7  Aminobromination of olefins with TsNH(2) and NBS as the nitrogen and bromine sources mediated by hypervalent iodine in a ball mill. Wu XL(1), Xia JJ, Wang GW. Author information: (1)Hefei National Laboratory for Physical Sciences, Hefei, Anhui, People's Republic of China.

  • Gold‐Catalysed Oxyarylation of Styrenes and Mono‐

    1‐Hydroxy‐1,2‐benziodoxol‐3(1H )‐one (IBA) is an efficient terminal oxidant for gold‐catalysed, three‐component oxyarylation reactions.The use of this iodine(III) reagent expands the scope of oxyarylation to include styrenes and gem ‐disubstituted olefins, substrates that are incompatible with the previously reported Selectfluor‐based methodology.

  • Reactions of Hypervalent Iodine Reagents with

    2018-5-26  The unique reactivity of hypervalent iodine reagents with Pd0 and PdII complexes has been exploited for a variety of synthetically useful organic transformations. For example, IIII reagents have been used in place of aryl halides for diverse Pd-catalyzed C−C and C−heteroatom bond-forming cross-coupling reactions. In addition, these reagents have found application in Pd-catalyzed oxidation ...

  • Synthesis of N-aryl-3-(arylimino)-3H-indol-2-amines

    2018-4-11  Hypervalent iodine compounds have been widely applied in organic synthesis as mild and environmentally benign oxidants. 21 Enlightened by PhI(OAc) 2 promoted C-2,3 diacetoxylation of N-substituted indoles 22 and applications of Togni’s reagents,23, 24, 25 we expected that cyclic hypervalent iodine(III) could be used to synthesize N-aryl-3 ...

  • Phenol Dearomatization with Hypervalent Iodine

    Zhdankin VV (2013) Hypervalent iodine chemistry – preparation, structure, and synthetic applications of polyvalent iodine compounds. Wiley, ... Peixoto PA, Boulangé A, Ball M, Naudin B, Alle T, Cosette P, Karuso P, Franck X (2014) J Am Chem Soc 136:15248–15256 CrossRef Google Scholar.

  • Bolm, Carsten - RWTH Aachen University - Department of ...

    Mechanochemical Indole Synthesis by Rhodium-Catalysed Oxidative Coupling of Acetanilides and Alkynes under Solventless Conditions in a Ball Mill G. N. Hermann, C. L. Jung, C. Bolm, Green Chem. 2017, 19, 2520 - 2523.

  • Chloramine T - an overview ScienceDirect Topics

    Chloramine-T (3) and bromamine-T (4) are two most widely used examples of N-halogeno-N-metallo reagents as a nitrene source. 4 Their structures are depicted in Figure 2.Compound 3 is commercially available in the form of a trihydrate and is a stable white to pale yellow solid, whereas 4 needs to be freshly prepared by the procedure reported by Roberts (Scheme 6). 5

  • Iodosobenzene Diacetate - Organic Chemistry

    Hypervalent iodine reagents mediate practical oxidative iodinations for the chemoselective mono-, di-, and tri-iodination of alkynes. The reaction conditions were systematically optimized by altering the iodine source and/or the hypervalent iodine reagent system. Y. Liu, D. Huang, J. Huang, K. Maruoka, J. Org. Chem., 2017, 82, 11865-11871.

  • The mechanochemical synthesis of quinazolin-4(3H)

    An iodine and ammonia mixture is a well-known contact explosive due to formation of NI 3.Similarly, hypervalent iodines as oxidizing compounds react violently with amines under solvent-free conditions .Aryliodonium imides or iminoiodanes can be prepared by the treatment of electron-deficient amines with iodine

  • The Mechanochemical Synthesis of quinazolin-4(3 H)

    Performing any synthesis using several arylamines and hypervalent iodine(V) reagents by direct mixing is unrealistic because of the high exothermic reaction or explosion. Herein we demonstrate, when anilines were substituted with an amide group at the ortho -position, successful chemical react

  • Reactions of Hypervalent Iodine Reagents with

    2018-5-26  The unique reactivity of hypervalent iodine reagents with Pd0 and PdII complexes has been exploited for a variety of synthetically useful organic transformations. For example, IIII reagents have been used in place of aryl halides for diverse Pd-catalyzed C−C and C−heteroatom bond-forming cross-coupling reactions. In addition, these reagents have found application in Pd-catalyzed oxidation ...

  • Publication List - USTC

    2012-7-27  Hypervalent Iodine in a Ball Mill”, 2 Org. Biomol. Chem. 2008, 6, 548-553. 93. Zhong-Xiu Chen, Bo Zhu, and Guan-Wu Wang,* “Solvent-Free Mechanochemical Reaction of [60]Fullerene with Phenylhydrazine Hydrochlorides”, Lett. Org. Chem. 2008, 5, 65-68. 92. Xue-Liang Wu and Guan-Wu Wang,* “Aminochlorination in Water: First Brønsted

  • dmso是什么意思_dmso怎么读_dmso翻译_用法_发音_词组 ...

    dmso是什么意思?dmso怎么读?新东方在线字典为用户提供单词dmso的释义、dmso的音标和发音、dmso的用法、例句、词组、词汇搭配、近反义词等内容,帮助大家掌握单词dmso。

  • research papers IUCrJ - (IUCr) Crystallography Journals

    2017-6-30  412 Gabriella Cavallo et al. Hypervalent iodine and bromine derivatives IUCrJ (2017). 4, 411–419 Figure 2 Partial representation (Mercury 3.8, ball and stick) of the two-dimensional nets formed by dicyanotelluride under chalcogen bond control (top) and

  • Iodosobenzene Diacetate - Organic Chemistry

    Hypervalent iodine reagents mediate practical oxidative iodinations for the chemoselective mono-, di-, and tri-iodination of alkynes. The reaction conditions were systematically optimized by altering the iodine source and/or the hypervalent iodine reagent system. Y. Liu, D. Huang, J. Huang, K. Maruoka, J. Org. Chem., 2017, 82, 11865-11871.

  • Chloramine T - an overview ScienceDirect Topics

    Chloramine-T (3) and bromamine-T (4) are two most widely used examples of N-halogeno-N-metallo reagents as a nitrene source. 4 Their structures are depicted in Figure 2.Compound 3 is commercially available in the form of a trihydrate and is a stable white to pale yellow solid, whereas 4 needs to be freshly prepared by the procedure reported by Roberts (Scheme 6). 5

  • Catalysis for Fluorination and Trifluoromethylation

    位置: 8600 Rockville Pike, Bethesda, MD
  • Gold-Catalyzed Direct Arylation Science

    Biaryls (two directly connected aromatic rings, Ar1-Ar2) are common motifs in pharmaceuticals, agrochemicals, and organic materials. Current methods for establishing the Ar1-Ar2 bond are dominated by the cross-coupling of aryl halides (Ar1-X) with aryl metallics (Ar2-M). We report that, in the presence of 1 to 2 mole percent of a gold catalyst and a mild oxidant, a wide range of arenes (Ar1-H ...

  • Iodosobenzene Diacetate - Organic Chemistry

    Hypervalent iodine reagents mediate practical oxidative iodinations for the chemoselective mono-, di-, and tri-iodination of alkynes. The reaction conditions were systematically optimized by altering the iodine source and/or the hypervalent iodine reagent system. Y. Liu, D. Huang, J. Huang, K. Maruoka, J. Org. Chem., 2017, 82, 11865-11871.

  • 官能团的转化——酯化和酰胺化反应(五) 化学空间 Chem ...

    2020-3-6  高价碘(Hypervalent Iodine) 2016/5/4 有机合成百科 双键的环氧化反应(三) 2020/3/18 有机合成百科, 氧化反应 碘内酯化反应 Iodolactonization 2014/7/17 有机合成百科 Kulinkovich Reaction 2016/10/7 有机合成百科 Larock 吲哚合成 Larock indole synthe ,

  • Periodic Table of Elements and Chemistry Education ...

    2019-9-11  Abstract: The publication of the periodic table is a milestone in the field of chemistry. Its guiding role and importance in the study and research of chemistry, especially inorganic chemistry, have been widely recognized.

  • Special Collection of Papers Regular Article

    Nowadays, the environmentally-benign hypervalent iodine oxidation has witnessed significant progress in the field of organic chemistry.18–30) We have been engaged in the develop-ment of the oxidation of the sulfur atom utilizing hypervalent iodine reagents to form an active iodonium intermediate.31,32)

  • Modular bismacycles for the selective C–H arylation of ...

    2020-2-27  Ozanne‐Beaudenon, A. Quideau, S. Regioselective hypervalent‐iodine(iii)‐mediated dearomatizing phenylation of phenols through direct ligand coupling. ... Lorenzo Maggi Liam T. Ball.

  • Publications 2017 Prof. Dr. Carsten Bolm

    2020-7-28  Mechanochemical indole synthesis by rhodium-catalysed oxidative coupling of acetanilides and alkynes under solventless conditions in a ball mill G. N. Hermann, C. L. Jung, C. Bolm, Green Chem. 2017, 19, 2520–2523. Mechanoenzymatic peptide and amide bond formation

  • Catalysis for Fluorination and Trifluoromethylation

    位置: 8600 Rockville Pike, Bethesda, MD
  • Leak in a Thermo Trace1310 GCMS after shutting

    2014-7-8  by hypervalent_iodine » Tue Jul 08, 2014 11:12 am The leak was not with the MS. On Monday I fitted a blanking nut to where the column enters the transfer line to check if that was the issue and it was fine as per the air/water check, indicating an issue with the column.

  • pmal NISER

    2020-7-29  Achar and P. Mal, Transformation of Contact-Explosives Primary Amines and Iodine(III) into a Successful Chemical Reaction under Solvent-Free Ball Milling Conditions, Adv. Synth. Catal. ,

  • Chapter 7 Knewton Coursework Flashcards Quizlet

    Iodine has 7 valence electrons, and since it is a fifth period element, it can exceed the octet rule when it binds to a more electronegative element like fluorine. ... Odd-electron, hypervalent, and electron-deficient molecules all have us rearrange bonds to make multiple bonds to the central atom if possible.