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Iodine Ball Hypervalent

Iodine Ball Hypervalent

Aminobromination of olefins with TsNH2 and NBS as

Cited by: 94

Chemical Bonding in Hypervalent Molecules: Is the

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Reactivity of a 10-I-3 Hypervalent Iodine ...

2018-8-25 · The reaction of the 10-I-3 hypervalent iodine electrophilic trifluoromethylation reagent 1-trifluoromethyl-1,2-benziodoxol-3-(1H)-one (2) with 2,4,6-trimethylphenol, after deprotonation with NaH and in the presence of 18-crown-6 in a polar, nonprotic solvent, affords 1,3,5-trimethyl-2-(trifluoromethoxy)benzene (4) only as a byproduct.

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Hypervalent Iodine Goes Catalytic - Richardson - 2006 ...

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(IUCr) Halogen bonding in hypervalent iodine and

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Synthesis, Structure, and Chemoselective Reactivity of

Synthesis, Structure, and Chemoselective Reactivity of N-(2-Iodylphenyl)acylamides: Hypervalent Iodine Reagents Bearing a Pseudo-Six-Membered Ring Scaffold ... IBX works efficiently under solvent free conditions in ball milling, RSC Advances, 2014, 4, 25, 12834CrossRef;

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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

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Halogen Bonding in Hypervalent Iodine Compounds

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Hypervalent iodine-promoted aminobromination of

Request PDF on ResearchGate | Hypervalent iodine-promoted aminobromination of electron- deficient olefins with Bromamine-T | A convenient and practical procedure for the aminobromination of ...

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Aminobromination of olefins with TsNH2 and NBS as

Request PDF on ResearchGate | Aminobromination of olefins with TsNH2 and NBS as the nitrogen and bromine sources mediated by hypervalent iodine in a ball mill | A series of olefins including alpha ...

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ChemInform Abstract: Aminobromination of Olefins

ChemInform Abstract: Aminobromination of Olefins with TsNH2 and NBS as the Nitrogen and Bromine Sources Mediated by Hypervalent Iodine in a Ball Mill.

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

A direct and fast oxidative diamination of substituted indoles with anilines were realized by using hypervalent iodine under mild conditions. This protocol could provide a wide range of synthetically valuable N-aryl-3-(arylimino)-3H-indol-2-amine derivatives under peroxide-free conditions within 30min in up to 91% yields.

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Molecules | Free Full-Text | Hypervalent Iodine

2017-3-29 · 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.

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Hypervalent molecule - Revolvy

2004-6-22 · A hypervalent molecule (the phenomenon is sometimes colloquially known as expanded octet ) is a molecule that contains one or more main group elements apparently bearing more than eight electrons in their valence shells . Phosphorus pentachloride (PCl), sulfur hexafluoride (SF), chlorine trifluoride (ClF), the chlorite (ClO ) ion, and the triiodide (I ) ion are examples of hypervalent molecules.

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Iodosobenzene Diacetate - organic-chemistry.org

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.

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Publication List - ustc.edu.cn

2012-7-27 · 119. Xue-Liang Wu and Guan-Wu Wang*, “Hypervalent Iodine-Mediated Aminobromination of Olefins in Water”, Tetrahedron 2009, 65, 8802-8807. 118. Guan-Wu Wang* and Ping Wu, “Calculations and Assignments of Endohedral Helium-3 Chemical Shifts of Open-Cage Fullerenes and Higher Fullerenes”, Theo. Chem. Acc. 2009, 123, 375-381. 117.

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

2018-9-12 · For this reason, synthetic methods based on hypervalent iodine reagents and primary amines under solvent-free conditions or constrained media are limited [8]. Recently, we have described a method for the successful reaction of primary amines and hypervalent iodine(III) reagents by controlling the reactivity using an acid salt, NaHSO4, as ...

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Gold-Catalyzed Alkynylation: Acetylene-Transfer instead of ...

2014-5-3 · Gold-Catalyzed Alkynylation: Acetylene-Transfer instead of Functionalization_能源/化工_工程科技_专业资料 暂无评价|0人阅读|0次下载 | 举报文档 Gold ...

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Bolm, Carsten - 海外导师 海外导师 - X-MOL

Rhodium(III)-Catalyzed C–H Bond Amidation of Arenes with Dioxazolones under Solventless Conditions in a Ball Mill G. N. Hermann, C ... Sulfoximidoyl-Containing Hypervalent ...

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Oxidative Trifluoromethylation and Trifluoromethylthiolation ...

2016-4-1 · Article pubs.acs.org/accounts Oxidative Tri?uoromethylation and Tri?uoromethylthiolation Reactions Using (Tri?uoromethyl)trimethylsilane as a Nucleophilic CF3 ...

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

2018-9-12 · For this reason, synthetic methods based on hypervalent iodine reagents and primary amines under solvent-free conditions or constrained media are limited [8]. Recently, we have described a method for the successful reaction of primary amines and hypervalent iodine(III) reagents by controlling the reactivity using an acid salt, NaHSO4, as ...

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Iodosobenzene Diacetate - organic-chemistry.org

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.

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jstage.jst.go.jp

Thioglycosides are available donors in glycosylation due to the stability of the anomeric C–S bond under general reaction conditions of protection and deprotection, and offer or

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Iodine - organic-chemistry.org

Iodine was compared to other positive halogens as terminal oxidant in chemoselective oxidations of alcohols using catalytic TEMPO and was shown to be superior in cases of electron-rich and heteroaromatic benzylic alcohols. R. A. Miller, R. S. Hoerrner, Org. Lett., 2003, 5, 285-287.

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Special Collection of Papers Regular Article

ball milling under a solvent-free condition.14) However, these ... The Hypervalent Iodine Induced Metal-Free Glycosylation Special Collection of Papers This article is dedicated to Professor Satoshi Ōmura in celebration of his 2015 Nobel Prize. Vol. 64, No. 7 (2016) Chem. Pharm. Bull. 839

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Compound Iodine, Compound Iodine Suppliers and ...

LIMING offers 147 compound iodine products. About 4% of these are pharmaceutical intermediates, 2% are animal pharmaceuticals, and 1% are auxiliaries and other medicinal chemicals. A wide variety of compound iodine options are available to you, such as free samples.

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hypervalent silicon Publications | PubFacts

By rationalizing the hypervalent iodine's metal-like properties it was concluded that a transmetallation mechanism could be occurring with metalloid groups such as silicon and boron. Hypervalent iodine reagents such as Zefirov's reagent, cyclic iodonium reagents, iodosobenzene/BF, and PhI(OAc)/BF or triflate-based activators were tested. Read More

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Publications 2016 | Prof. Dr. Carsten Bolm

2019-4-9 · Copper-Catalyzed Oxidative α-Ketoacylations of Sulfoximines with Aryl Methyl Ketones and Dioxygen as Terminal Oxidant H. Cheng, C. Bolm, Synlett 2016, 27, 769–772. Copper-Catalyzed Direct Sulfoximination of Heteroaromatic N-Oxides by Dual C–H/N–H Dehydrogenative Cross-Coupling H. Yu, Z. Li, C. A. Dannenberg, C. Bolm, Chem. Asian J. 2016, 11, 54–57.

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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 ...

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Publications 2017 | Prof. Dr. Carsten Bolm

2019-4-19 · 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

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hypervalent silicon Publications | PubFacts

By rationalizing the hypervalent iodine's metal-like properties it was concluded that a transmetallation mechanism could be occurring with metalloid groups such as silicon and boron. Hypervalent iodine reagents such as Zefirov's reagent, cyclic iodonium reagents, iodosobenzene/BF, and PhI(OAc)/BF or triflate-based activators were tested. Read More

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Metal-free alcohol-directed regioselective

2018-8-21 · Increasing the amount of PIFA slightly improved the outcome (entry 5), but using too much PIFA significantly inhibited the reaction (entry 6). Other hypervalent iodine(III) reagents were also ...

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苏州市人民政府关于表彰2010~2011年度苏州市自然科学 ...

2012-9-5 · Ligand-Free Reusable Palladium-Catalyzed Heck-Type Coupling Reactions of Hypervalent Iodine Reagents under Mild Conditions ... Research on MR Active Damping ...

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US8338649B2 - Method for the production of

The invention relates to a method for the production of an aromatic carbonyl compound by the oxidation of a methyl group or methylene group bonded to the aromatic group in which the aromatic substance is reacted in the presence of an oxidizing agent and a sulphoxide, a sulphoxide being selected for the oxidation of a specific aromatic substance whose ionization potential, in terms of magnitude ...

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The Compton Group - papers 2016

[55] Hydrogen Bonding to Hexafluoroisopropanol Controls the Oxidative Strength of Hypervalent Iodine Reagents I Colomer, C Batchelor-McAuley, B Odell, T Donohoe, RG Compton, Journal of American Chemical Society, 138, (2016), 8855-8861.

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A new iodine-based catalyst for asymmetric synthesis ...

2010-9-1 · The researchers took the radical step of swapping iodine bonded to carbon for an iodite (IO2–) or hypoiodite (IO–) anion as the oxidant, which can be generated from iodide (I–) by simple oxidants, such as hydrogen peroxide.

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RSC Advances

hypervalent iodine(V) reagent has been preferred for metal free oxidative transformations in organic synthesis. 4-7 Although journey of IBX started in 1893 by Hartmann and Meyer 8 but its industrial/laboratory scale use was restricted due to explosiveness at higher temperature 9

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python - How to create sound of ball bouncing off of

2019-3-29 · How to create sound of ball bouncing off of bar. Ask Question 1. I am currently working on a little pong game, I am wondering on how to add sound to my game so that when the ball bounces off of one of the paddles, it will make the sound I want. ... Mechanism of oxidative dearomatisation with hypervalent iodine Is multiple magic items in one ...

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Wikipedia, the free encyclopedia

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2019-4-21 · Teresa Sampsonia (1589–1668) was a noblewoman of the Safavid Empire of Iran. She was born into a noble Orthodox Christian Circassian family and grew up in Isfahan in the Iranian royal court. In 1608 she married the Elizabethan English adventurer Robert Shirley, who attended the Safavid court in an effort to forge an alliance against the neighbouring Ottoman Empire.

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X-MOL平台

2016-11-15 · X-MOL平台,顶级期刊论文图文内容每日更新,海内外课题组信息,行业新闻文摘,化学类网址导航,化学软件和数据库导航,及更多其他内容

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