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672-36-6

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672-36-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 672-36-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,7 and 2 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 672-36:
(5*6)+(4*7)+(3*2)+(2*3)+(1*6)=76
76 % 10 = 6
So 672-36-6 is a valid CAS Registry Number.

672-36-6Relevant articles and documents

Validation of Arylphosphorothiolates as Convergent Substrates for Ar-SF 4Cl and Ar-SF 5Synthesis

Wang, Lin,Ni, Shengyang,Cornella, Josep

supporting information, p. 4308 - 4312 (2021/06/02)

In this manuscript we describe the oxidative fluorination of aryl phosphorothiolates to access Ar-SF4Cl compounds. These compounds serve as precursors for the highly coveted Ar-SF5 compounds. The use of phosphorothiolates as starting materials permits access to Ar-SF4Cl from a wide variety of available starting materials, namely boronic acids, diazonium salts, aryl iodides, thiophenols, or simple arenes. The protocol has been demonstrated for 10 examples and showed good tolerance to various functional groups. Finally, we demonstrated that AgBF4 can be used as a fluorinating agent, affording good yields of an Ar-SF5.

Making the SF5 Group More Accessible: A Gas-Reagent-Free Approach to Aryl Tetrafluoro-λ6-sulfanyl Chlorides

Pitts, Cody Ross,Bornemann, Dustin,Liebing, Phil,Santschi, Nico,Togni, Antonio

supporting information, p. 1950 - 1954 (2019/01/25)

Modern pentafluorosulfanyl (SF5) chemistry has an Achilles heel: synthetic accessibility. Herein, we present the first approach to aryl-SF4Cl compounds (key intermediates in state-of-the-art aryl-SF5 synthesis) that overco

Arylsulfur chlorotetrafluorides as useful fluorinating agents: Deoxo- and dethioxo-fluorinations

Umemoto, Teruo,Singh, Rajendra P.

experimental part, p. 17 - 27 (2012/09/07)

Usage of arylsulfur chlorotetrafluorides 1 as versatile deoxo- and dethioxo-fluorinating agents is described. There have been developed two convenient methods for the in situ preparation of reactive arylsulfur trifluorides 2 from 1. The one is reduction of 1 with a reducer such as pyridine to 2, and the other is disproportionation of 1 with a diaryl disulfide to 2 with evolution of chlorine gas. The latter method is a convenient way to get neat 2 from 1. The in situ prepared 2 fluorinates many kinds of substrates such as alcohols, aldehydes, ketones, diketones, and carboxylic acids to give the corresponding CF, CF2, CF2CF2, and CF 3 compounds in high yields. 2 also fluorinates various sulfur compounds including CS groups to give CF2, OCF2, CF 3, and OCF3 compounds in high yields. Reactions of 2 with diols or bis(trimethylsilyl) derivatives of diols or amino alcohols provided the corresponding deoxofluoro-arylsulfinylation products in high yields. In addition, it has been found that chlorotetrafluorides 1 directly and effectively react with the sulfur compounds to give the corresponding fluoro compounds in high yields. Since they are the intermediates for the production of industrially useful arylsulfur pentafluorides, arylsulfur chlorotetrafluorides 1, in particular, phenylsulfur chlorotetrafluoride (1a) are expected to find use as inexpensive and versatile deoxo- and dethioxo-fluorinating agents for the preparation of many organofluoro compounds.

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