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64846-47-5

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64846-47-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 64846-47-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,8,4 and 6 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 64846-47:
(7*6)+(6*4)+(5*8)+(4*4)+(3*6)+(2*4)+(1*7)=155
155 % 10 = 5
So 64846-47-5 is a valid CAS Registry Number.

64846-47-5Relevant articles and documents

Direct C-H α-Arylation of Enones with ArI(O2CR)2 Reagents

Sousa E Silva, Felipe Cesar,Van, Nguyen T.,Wengryniuk, Sarah E.

supporting information, p. 64 - 69 (2020/01/22)

α-Arylation of α,β-unsaturated ketones constitutes a powerful synthetic transformation. It is most commonly achieved via cross-coupling of α-haloenones, but this stepwise strategy requires prefunctionalized substrates and expensive catalysts. Direct enone C-H α-arylation would offer an atom- and step-economical alternative, but such reports are scarce. Herein we report the metal-free direct C-H arylation of enones mediated by hypervalent iodine reagents. The reaction proceeds via a reductive iodonium Claisen rearrangement of in situ-generated β-pyridinium silyl enol ethers. The aryl groups are derived from ArI(O2CCF3)2 reagents, which are readily accessed from the parent iodoarenes. The reaction is tolerant of a wide range of substitution patterns, and the incorporated arenes maintain the valuable iodine functional handle. Mechanistic investigations implicate arylation via an umpoled "enolonium" species and show that the presence of a β-pyridinium moiety is critical for the desired C-C bond formation.

An Investigation of (Diacetoxyiodo)arenes as Precursors for Preparing No-Carrier-Added [18F]Fluoroarenes from Cyclotron-Produced [18F]Fluoride Ion

Haskali, Mohammad B.,Telu, Sanjay,Lee, Yong-Sok,Morse, Cheryl L.,Lu, Shuiyu,Pike, Victor W.

, p. 297 - 302 (2016/01/15)

Treatment of (diacetoxyiodo)arenes (1a-1u) with cyclotron-produced [18F]fluoride ion rapidly affords no-carrier-added [18F]fluoroarenes (2a-2u) in useful yields and constitutes a new method for converting substituted iodoarenes into substituted [18F]fluoroarenes in just two steps.

A general and convenient preparation of [Bis(trifluoroacetoxy)iodo] perfluoroalkanes and [Bis(trifluoroacetoxy)iodo] arenes by oxidation of organic iodides using Oxone and trifluoroacetic acid

Zagulyaeva, Aleksandra A.,Yusubov, Mekhman S.,Zhdankin, Viktor V.

supporting information; experimental part, p. 2119 - 2122 (2010/06/12)

"Chemical Equation Presented" [Bis(trifiuoroacetoxy)iodo] perfiuoroalkanes CnF2n+1I(OC-OCF3)2 (n = 4, 6, 8, 10, 12) can be conveniently prepared by the oxidation of the corresponding perfluoroalkyl iodides with Oxone in trifluoroacetic acid at room temperature and subsequently converted to the stable [hydroxy(tosyloxy)-iodo] perfluoroalkanes, CnF2n+1I(OH)OTs, by treatment with p-toluenesulfonic acid. This general and convenient procedure has been further extended to the synthesis of various [bis(trifluoroacetoxy)iodo]arenes, ArI(OCOCF3)2.

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