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945732-76-3

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945732-76-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 945732-76-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,5,7,3 and 2 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 945732-76:
(8*9)+(7*4)+(6*5)+(5*7)+(4*3)+(3*2)+(2*7)+(1*6)=203
203 % 10 = 3
So 945732-76-3 is a valid CAS Registry Number.

945732-76-3Relevant articles and documents

Asymmetric synthesis of β-amino ketones by using cinchona alkaloid-based chiral phase transfer catalysts

Li, Weihua,Wang, Yifeng,Xu, Danqian

, p. 8704 - 8709 (2018)

A highly enantioselective nucleophilic addition of ketones to imines catalyzed by chiral phase-transfer catalysts (N-quaternised cinchona alkaloid ammonium salts) has been developed, and the process affords the Mannich reaction products with tertiary stereocenters in good to high yields (up to 95%) with excellent enantioselectivities (up to 97% ee).

Catalytic asymmetric conjugate addition of isocyanoacetate to (Z)-3-substituted-2-(4-pyridyl)-acrylonitrile, a reactive class of Michael acceptor

Del Fiandra, Claudia,Moccia, Maria,Cerulli, Valentina,Adamo, Mauro F. A.

supporting information, p. 1697 - 1700 (2016/01/30)

(Z)-3-Substituted-2-(4-pyridyl)-acrylonitriles, a reactive class of Michael acceptors obtained exclusively as a single (Z) isomer, reacted with un-substituted isocyanoacetate esters mediated by phase-transfer catalysis to give, after base promoted cyclisation, functionalized imines in up to 94% ee and as a single diastereoisomer.

Diastereoselective and enantioselective epoxidation of acyclic β-trifluoromethyl-β,β-disubstituted enones by hydrogen peroxide with a pentafluorinated quinidine-derived phase-transfer catalyst

Wu, Shaoxiang,Pan, Dong,Cao, Chengyao,Wang, Qi,Chen, Fu-Xue

supporting information, p. 1917 - 1923 (2013/08/23)

An efficient catalytic asymmetric epoxidation of β-trifluoromethyl- β,β-disubstituted unsaturated ketones has been achieved by a pentafluorine-substituted phase-transfer catalyst with hydrogen peroxide (30%). Thus, the β-trifluoromethyl-α,β-epoxy ketones with a quaternary carbon centre were obtained in excellent diastereoselectivities (up to 100:1 dr) and excellent enantioselectivities (up to 99.7% ee). Low catalyst loading, recycle of catalyst, environmentally benign oxidant and easy transformation of the epoxides into medicinally important trifluoromethylated intermediate make our protocol much more practical. Copyright

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