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153218-97-4

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153218-97-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 153218-97-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,2,1 and 8 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 153218-97:
(8*1)+(7*5)+(6*3)+(5*2)+(4*1)+(3*8)+(2*9)+(1*7)=124
124 % 10 = 4
So 153218-97-4 is a valid CAS Registry Number.

153218-97-4Relevant articles and documents

Highly diastereoselective conjugate addition of aryllithium to chiral β-nitrostyrene derivative: An application to the asymmetric synthesis of 4-aryl-1,2,3,4-tetrahydroisoquinoline

Asami, Masatoshi,Taketoshi, Ayako,Miyoshi, Keita,Hoshino, Hayato,Sakakibara, Kazuhisa

, p. 64 - 65 (2007/10/03)

Highly diastereoselective conjugate addition of aryllithium to β-nitrostyrene derivative, having chiral acetal moiety derived from (S,S)-1,2-bis(1-hydroxypropyl)benzene, was achieved. The adduct was transformed to 4-aryl-1,2,3,4-tetrahydroisoquinoline in

Diastereoselective protonation of lactam enolates derived from (R)-phenylglycinol. A novel asymmetric route to 4-phenyl-1,2,3,4-tetrahydroisoquinolines

Philippe, Nicolas,Levacher, Vincent,Dupas, Georges,Quéguiner, Guy,Bourguignon, Jean

, p. 2185 - 2187 (2007/10/03)

(equation presented) Highly diastereoselective protonation of chiral lactam enolates of 4-substituted-1,4-dihydroisoquinolin-3-ones is reported. Protonation and alkylation processes of these lactam enolates derived from phenylglycinol occur with opposite diastereofacial selectivity. This diastereoselective protonation has been applied to the asymmetric synthesis of (4S)-N-methyl-4-phenyl-1,2,3,4-tetrahydroisoquinoline 9 obtained in up to 97% ee.

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