iodine ball hypervalent

Transformation of Contact‐Explosives Primary Amines and …

Any synthetic transformation using contact‐explosives primary amines and hypervalent iodine(III) (phenyliodine diacetate) in constrained media (extreme conditions) is practically impossible. Herein, we report a method of controlling the explosion into a successful ...

Synthesis of N-aryl -(arylimino) H-indol -amines via …

Hypervalent iodine compounds have been widely applied in organic synthesis as mild and environmentally benign oxidants. 21 Enlightened by PhI(OAc) 2 promoted C ,3 diacetoxylation of N-substituted indoles 22 and applications of Togni’s reagents,23, 24, 25 N

Synthesis of 18F-arenes from spirocyclic iodonium(III) …

Spirocyclic hypervalent iodine(III) ylides have proven to be synthetically versatile precursors for efficient radiolabelling of a diverse range of non-activated (hetero)arenes, highly functionalised small molecules, building blocks and radiopharmaceuticals from [18 F]fluoride ion.F]fluoride ion.

Aminobromination of olefins with TsNH2 and NBS as the …

Aminobromination of olefins with TsNH 2 and NBS as the nitrogen and bromine sources mediated by hypervalent iodine in a ball mill X. Wu, J. Xia and G. Wang, Org. Biomol. Chem., 2008, 6, 548 DOI: 10.1039/B717333D If you are not the author of ...

(IUCr) Halogen bonding in hypervalent iodine and bromine …

Halogen bonds have been identified in a series of ionic compounds involving bromonium and iodonium cations and several different anions, some also containing hypervalent atoms. The hypervalent bromine and iodine atoms in the examined compounds are found to ...

Tetrafluoro‐IBA and‐IBX: Hypervalent Iodine Reagents

Fluorine makes the difference: FIBX (see structure), the tetrafluoro derivative of the hypervalent iodine reagent, is more soluble and has higher reactivity than its nonfluorinated counterpart.An efficient synthesis of FIBX and initial reactions are presented. Some of these ...

Aminobromination of olefins with TsNH2 and NBS as the …

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): 53 · March ...

Molecules | Free Full-Text | Hypervalent Iodine Reagents …

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

Current Protocols in Nucleic Acid Chemistry: Vol 70,

Current Protocols in Bioinformatics Current Protocols in Cell Biology Current Protocols in Chemical Biology Current Protocols in Cytometry Current Protocols Essential Laboratory Techniques Current Protocols in Nucleic Acid Chemistry is the comprehensive resource for detailed protocols related to the synthesis, modification, and analysis of modified and unmodified nucleosides, nucleotides ...

One-Pot Synthesis of Hypervalent …

Abstract Diaryl(iodo)bismuthanes possessing a hypervalent C=O•••Bi–I bond were conveniently synthesized in a one-pot reaction by using arylzinc reagents generated from o-carbonyl iodobenzenes and zinc powder under ultrasonication.This method is superior to ...

research papers IUCrJ

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 by dicyano

Aminations with Hypervalent Iodine

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

C−H Oxygenation Reactions Enabled by Dual Catalysis with …

The catalytic generation of hypervalent iodine(III) reagents by anodic electrooxidation was orchestrated towards an unprecedented electrocatalytic C−H oxygenation of weakly coordinating aromatic amides and ketones. Thus, catalytic quantities of iodoarenes in ...

Chemical Bonding in Hypervalent Molecules: Is the Octet …

The bonding in a large number of hypervalent molecules of P, As, S, Se, Te, Cl, and Br with the ligands F, Cl, O, CH3, and CH2 has been studied using the topological analysis of the electron localization function ELF. This function partitions the electron density of a ...

Catalysis for fluorination and trifluoromethylation | Nature

When incorporated into organic compounds, fluorine atoms often impart useful properties. For example, fluorination improves the thermal stability of some materials, and enhances the metabolic ...

Aminobromination of olefins with TsNH2 and NBS as the …

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, a Jing-Jing Xia a and Guan-Wu Wang* a Author affiliations * Corresponding authors ...

Catalysis for Fluorination and Trifluoromethylation

 · Two enantioselective α-trifluoromethylation reactions of aldehydes have been reported. Aldehydes were trifluoromethylated enantioselectively with the hypervalent iodine reagent 27 92 as the electrophilic reagent, and the chiral imidazolidinone catalyst 26 (Fig. 5c .

Aminobromination of olefins with TsNH(2) and NBS as the …

 · 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

Chloramine T

Reproduced from Wu X-L, Xia J-J, Wang G-W. Aminobromination of olefins with TsNH2 and NBS as the nitrogen and bromine sources mediated by hypervalent iodine in a ball mill. Org Biomol Chem 2008;6:548–53, with permission from the Royal Society of

Xue-Liang Wu's research works | University of Science and …

Xue-Liang Wu's 14 research works with 448 citations and 334 reads, including: ChemInform Abstract: Hypervalent Iodine-Mediated Aminobromination of Olefins in WaterIn particular, mono-substituted 1 ...

Glycosylation Reaction of Thioglycosides by Using …

In conclusion, we found that the hypervalent iodine, PIFA, is an excellent promoter of thioglycosides in the presence of TfOH in the glycosylation reaction and the reaction afforded satisfactory results especially using the thioglycosides bearing a phthalimido group

crystalized iodine, crystalized iodine Suppliers and …

Alibaba.com offers 1,389 crystalized iodine products. About 35% of these are Animal Pharmaceuticals, 19% are Anti-Allergic Agents, and 14% are Disinfectant and Preservatives. A wide variety of crystalized iodine options are available to you, such as grade ...

Solvent-Free Reactions with Hypervalent Iodine Reagents | …

We describe solvent-free reactions for the synthesis of hypervalent iodine reagents and their use in solid-state reactions. Improved yields and higher purities of the products are observed. This article is cited by 61 publications. ...

Reactions of Hypervalent Iodine Reagents with Palladium: …

The unique reactivity of hypervalent iodine reagents with Pd 0 and Pd II complexes has been exploited for a variety of synthetically useful organic transformations. For example, I III reagents have been used in place of aryl halides for diverse Pd-catalyzed C−C and …

Weiss’ Reagents: A synthetically useful class of iodine(III) …

The first report of hypervalent iodine dates back well over 100 years with work by Willgerodt and co-workers describing the synthesis of PhICl 2 via the treatment of iodobenzene with chlorine gas .Reagents of the iodine(III) family now represent a cohort of powerful ...

Leak in a Thermo Trace1310 GCMS after shutting down.

 · by hypervalent_iodine » Fri 3:17 am I'm a lot of problems with a semi-new Trace1310 GC from Thermo today and I am hoping that someone can she'd some light on the issue. I am relatively new at the more advanced aspects of maintaining and using GCMS equipment and so this may be a silly question with an obvious solution.

Phenol Dearomatization with Hypervalent Iodine …

This chapter highlights recent developments in phenol dearomatization using organoiodane reagents and a selection of applications in natural product synthesis. Quideau S (2002) Oxidative conversion of arenols into ortho-quinols and ortho-quinone monoketals – a useful tactic in organic synthesis. ...

Electrophilic Trifluoromethylation by Use of Hypervalent …

The ability of hypervalent iodine compounds to perform atom or functional group-transfer reactions inspired our group to develop a new reagent based on a λ iodane core, capable of transferring an electrophilic CF 3 unit. The objective was to prepare a stable 3 3 ...

Xue‐Liang Wu's research works | University of Science and …

ChemInform Abstract: Aminobromination of Olefins with TsNH2 and NBS as the Nitrogen and Bromine Sources Mediated by Hypervalent Iodine in a Ball Mill. Article Jun 2008 Xue‐Liang Wu Jing‐Jing Xia