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947546-62-5

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947546-62-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 947546-62-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,7,5,4 and 6 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 947546-62:
(8*9)+(7*4)+(6*7)+(5*5)+(4*4)+(3*6)+(2*6)+(1*2)=215
215 % 10 = 5
So 947546-62-5 is a valid CAS Registry Number.

947546-62-5Relevant articles and documents

Enantioselective Synthesis of Distorted π-Extended Chiral Triptycenes Consisting of Three Distinct Aromatic Rings by Rhodium-Catalyzed [2+2+2] Cycloaddition

Aida, Yukimasa,Shibata, Yu,Tanaka, Ken

, p. 3004 - 3009 (2020)

The enantioselective synthesis of distorted π-extended chiral triptycenes, consisting of three distinct aromatic rings, has been achieved with high ee value of 87 % by the cationic rhodium(I)/segphos complex-catalyzed enantioselective [2+2+2] cycloaddition of 2,2′-di(prop-1-yn-1-yl)-5,5′-bis(trifluoromethyl)-1,1′-biphenyl with 6-methoxy-1,2-dihydronaphthalene followed by the diastereoselective Diels–Alder reaction and aromatization. Demethoxy derivatives were also synthesized by the C?O bond cleavage. In this synthesis, the use of the electron-deficient diyne and the electron-rich alkene is crucial to suppress the undesired strain-relieving carbocation rearrangement and stabilize the distorted triptycene structure.

PtCl2-catalyzed hydrative cyclization of trialkyne functionalities to form bicyclic spiro ketones

Chang, Hsu-Kai,Datta, Swarup,Das, Arindam,Odedra, Arjan,Liu, Rai-Shung

, p. 4744 - 4747 (2008/02/08)

(Chemical Equation Presented) Triple rounds: A regioselective hydrative cyclization of triynes has been developed to give bicyclic β-hydroxy spiro ketones, which undergo subsequent dehydration to give the β,γ- unsaturated ketones (see scheme). Model reactions suggest that this platinum catalysis includes two selective hydrations, an alkyne insertion, and an aldol condensation.

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