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94319-63-8

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94319-63-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94319-63-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,3,1 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 94319-63:
(7*9)+(6*4)+(5*3)+(4*1)+(3*9)+(2*6)+(1*3)=148
148 % 10 = 8
So 94319-63-8 is a valid CAS Registry Number.

94319-63-8Relevant articles and documents

A bifunctional lewis acid induced cascade cyclization to the tricyclic core of ent-kaurenoids and its application to the formal synthesis of (±)-platensimycin

Zhu, Lizhi,Han, Yejian,Du, Guangyan,Lee, Chi-Sing

supporting information, p. 524 - 527 (2013/04/23)

A mild and efficient bifunctional Lewis acid induced cascade cyclization reaction has been developed for construction of the tricyclic core of ent-kaurenoids. With ZnBr2 as the bifunctional Lewis acid, a series of substituted enones and dienes underwent cascade cyclization smoothly at room temperature and provided the tricyclic products in one pot with good yields (75-91%) and high diastereoselectivity. The cyclized product has been successfully employed for the formal synthesis of (±)-platensimycin.

2,3a,5,6,7,7a-HEXAHYDRO-3H,4H-BENZOTHIOPHENE-3,4-DIONE AND CYCLOPENTA-TETRAHYDROTHIOPHENE-3,4-DIONE ENOLATE ANIONS AS SYNTHETIC EQUIVALENTS TO CYCLOHEX-2-ENONE AND CYCLOPENT-2-ENONE C-2-CARBANIONS.

Baraldi, Pier Giovanni,Barco, Achille,Benetti, Simonetta,Pollini, Gian Piero,Zanirato, Vinicio

, p. 4291 - 4294 (2007/10/02)

An efficient procedure for α-alkylation of cyclohex-2-enone and cyclopent-2-enone involving a base-promoted tandem of retrograde Dieckmann-Michael reactions of the C-alkylated derivatives of the title heterocycles is presented.

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