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142730-67-4

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142730-67-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142730-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,7,3 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 142730-67:
(8*1)+(7*4)+(6*2)+(5*7)+(4*3)+(3*0)+(2*6)+(1*7)=114
114 % 10 = 4
So 142730-67-4 is a valid CAS Registry Number.

142730-67-4Relevant articles and documents

Carbon-carbon bond-forming enantioselective synthesis of chiral organosilicon compounds by rhodium/chiral diene-catalyzed asymmetric 1,4-addition reaction

Shintani, Ryo,Okamoto, Kazuhiro,Hayashi, Tamio

, p. 4757 - 4759 (2007/10/03)

(Chemical Equation Presented) A new synthetic method for chiral organosilicon compounds through a rhodium-catalyzed asymmetric 1,4-addition of arylboronic acids to β-silyl α,β-unsaturated carbonyl compounds has been developed. By employing (R,R)-Bn-bod * as a ligand, a range of arylboronic acids can be coupled with these substrates in very high enantiomeric excess. The resulting β-silyl 1,4-adducts can be converted to β-hydroxy carbonyl compounds or allylsilanes while retaining their stereochemical information.

Catalytic Asymmetric Addition of Polyfunctional Dialkylzincs to β-Stannylated and β-Silylated Unsaturated Aldehydes

Ostwald, Roswitha,Chavant, Pierre-Yves,Stadtmueller, Heinz,Knochel, Paul

, p. 4143 - 4153 (2007/10/02)

The addition of functionalized dialkylzincs to readily available β-stannylated or β-silylated unsaturated aldehydes in the presence of a catalytic amount of (1R,2R)-1,2-bis(trifluorosulfonamido)cyclohexane (8 mol percent) provides chiral allylic alcohols

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