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207409-19-6

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207409-19-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207409-19-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,4,0 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 207409-19:
(8*2)+(7*0)+(6*7)+(5*4)+(4*0)+(3*9)+(2*1)+(1*9)=116
116 % 10 = 6
So 207409-19-6 is a valid CAS Registry Number.

207409-19-6Relevant articles and documents

Synthesis of Polysubstituted 2-Iodoindenes via Iodonium-Induced Cyclization of Arylallenes

Grandclaudon, Charlotte,Michelet, Véronique,Toullec, Patrick Y.

supporting information, p. 676 - 679 (2016/03/01)

A new chemoselective iodocarbocyclization of allenyl arenes was developed leading to the formation of 2-iodoindenes. In acetonitrile or nitromethane, electrophilic sources of iodine cations react selectively with the C2-C3 double bond of 1-arylallenes to give, after anti nucleophilic attack of the aromatic ring, 2-iodoindene products in high yields. Variations of the allenic skeletons revealed the high 5-endo selectivity and some competitive pathways of cyclization. Postfunctionalization reactions of the carbon-iodine bond, via Pd- and Cu-cross-couplings, gave rise to substituted indenes in good to excellent yields. (Chemical Equation Presented).

A concise access to (polyfluoroaryl)allenes by Cu-catalyzed direct coupling with propargyl phosphates

Nakatani, Akihiro,Hirano, Koji,Satoh, Tetsuya,Miura, Masahiro

experimental part, p. 2586 - 2589 (2012/07/30)

A copper-based catalyst system for the direct coupling of polyfluoroarenes with propargyl phosphates has been developed. The catalysis can provide a rapid and concise access to (polyfluoroaryl)allenes, which can be important building blocks for the synthesis of fluorinated functional materials.

Syntheses de Composes et Pyraniques par Reaction de Cyclisation Catalysee par les Complexes du Palladium(0

Fournier-Nguefack, Christelle,Lhoste, Paul,Sinou, Denis

, p. 614 - 634 (2007/10/03)

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