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53724-05-3

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53724-05-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53724-05-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,7,2 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 53724-05:
(7*5)+(6*3)+(5*7)+(4*2)+(3*4)+(2*0)+(1*5)=113
113 % 10 = 3
So 53724-05-3 is a valid CAS Registry Number.

53724-05-3Relevant articles and documents

Enantioselective Inverse Electron Demand (3 + 2) Cycloaddition of Palladium-Oxyallyl Enabled by a Hydrogen-Bond-Donating Ligand

Zheng, Yin,Qin, Tianzhu,Zi, Weiwei

, p. 1038 - 1045 (2021/01/25)

Cycloaddition reactions between oxyallyl cations and alkenes are important transformations for the construction of ring systems. Although (4 + 3) cycloaddition reactions of oxyallyl cations are well-developed, (3 + 2) cycloadditions remain rare, and an as

Mild propargylic oxidation using a diacetoxyiodobenzene/tert-butyl hydroperoxide protocol

Zhao, Yi,Ng, Angela Wan Ting,Yeung, Ying-Yeung

, p. 4370 - 4372 (2014/07/22)

A mild propargylic oxidation of alkynes is reported using a diacetoxyiodobenzene/tert-butyl hydroperoxide (DIB/TBHP) protocol. The reactions proceed smoothly at 0 °C and a number of α,β-unsaturated alkynoic ketones are obtained.

meso-Phbox-Pd(II) catalyzed tandem carbonylative cyclization of 1-ethynyl-1-propargyl acetate

Kato, Keisuke,Teraguchi, Ryuhei,Motodate, Satoshi,Uchida, Akira,Mochida, Tomoyuki,Peganova, Tat'yana A.,Vologdin, Nikolai V.,Akita, Hiroyuki

supporting information; experimental part, p. 3687 - 3689 (2009/02/05)

Palladium(II) catalyzed carbonylation of 1-ethynyl-1-propargyl acetate 1 is described; in the absence of the bisoxazoline (box) ligand, the second triple bond did not react, affording cyclic orthoesters 3 and 4. The use of meso-Phbox-Pd(II) strikingly changed the course of the reaction, yielding bicyclic lactone 2 by tandem carbonylative cyclization as a result of insertion of the second triple bond. The Royal Society of Chemistry.

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