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340184-74-9

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340184-74-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 340184-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,0,1,8 and 4 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 340184-74:
(8*3)+(7*4)+(6*0)+(5*1)+(4*8)+(3*4)+(2*7)+(1*4)=119
119 % 10 = 9
So 340184-74-9 is a valid CAS Registry Number.

340184-74-9Relevant articles and documents

Hydroxy-directed, fluoride-catalyzed epoxide hydrosilylation for the synthesis of 1,4-diols

Zhang, Yong-Qiang,Funken, Nico,Winterscheid, Peter,Gans?uer, Andreas

supporting information, p. 6931 - 6934 (2015/06/08)

Abstract A novel highly regioselective, fluoride-catalyzed hydrosilylation of β-hydroxy epoxides has been developed. The reaction is modular and applicable to the synthesis of a broad range of 1,4-diols. Fluoride is crucial for two reasons: First, it promotes the formation of a silyl ether (which contains a Si-H bond) and, second, it enables ring opening by an intramolecular SN2 reaction through activation of the silane. The reaction can be performed under air. A modular, convergent, and stereoselective synthesis of 1,4-diols by epoxide hydrosilylation has been developed (see scheme). The reaction occurs under fluoride catalysis, is high yielding, highly regioselective, and can be carried out on a large scale.

Transformation of homoallylic alcohol oxides into 3-hydroxytetrahydrofurans in aqueous HClO4

Chirskaya,Vasil'ev,Shorshnev,Sviridov

, p. 1300 - 1303 (2008/02/05)

Hydrolysis of allyl carbinol oxides in aqueous HClO4 gave the corresponding 1,2,4-triols. On heating in the same reaction medium, they underwent cyclization into 3-hydroxytetrahydrofurans. The method is restricted to substrates that can generat

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