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56475-33-3

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56475-33-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56475-33-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,4,7 and 5 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 56475-33:
(7*5)+(6*6)+(5*4)+(4*7)+(3*5)+(2*3)+(1*3)=143
143 % 10 = 3
So 56475-33-3 is a valid CAS Registry Number.

56475-33-3Relevant articles and documents

Bi(OTf)3-catalyzed tandem Meyer-Schuster rearrangement and 1,4-addition to the resulting vinyl ketone

Okamoto, Noriko,Sueda, Takuya,Yanada, Reiko

, p. 9854 - 9859 (2015/01/16)

Bi(OTf)3-catalyzed Meyer-Schuster rearrangement of electron-rich propargyl alcohols, followed by 1,4-addition of the resulting vinyl ketone, proceeded smoothly though Meyer-Schuster rearrangement of primary propargyl alcohols is rare. This tandem reaction can be extended to an intramolecular version, featuring a one-pot dihydroquinolone synthesis. (Chemical Equation Presented).

Unveiling the reactivity of propargylic hydroperoxides under gold catalysis

Alcaide, Benito,Almendros, Pedro,Quiros, M. Teresa,Lopez, Ramon,Menendez, Maria I.,Sochacka-Cwikla, Aleksandra

, p. 898 - 905 (2013/03/14)

Controlled gold-catalyzed reactions of primary and secondary propargylic hydroperoxides with a variety of nucleophiles including alcohols, phenols, 2-hydroxynaphthalene-1,4-dione, and indoles allow the direct and efficient synthesis of β-functionalized ke

Highly efficient p-toluenesulfonic acid-catalyzed alcohol addition or hydration of unsymmetrical arylalkynes

Olivi, Nathana?l,Thomas, Emmanuel,Peyrat, Jean-Fran?ois,Alami, Mouad,Brion, Jean-Daniel

, p. 2175 - 2179 (2007/10/03)

Under a catalytic amount of PTSA in aqueous or alcoholic media, activated unsymmetrical arylalkynes 1 undergo regioselective water or alcohol addition to afford successfully carbonyl compounds 2 in good to excellent yields. This new environmentally metal-free procedure, which afforded only Markovnikov adducts, is characterized by the mildness of acidic conditions and the excellent regio- and chemoselectivity.

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