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20461-34-1

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20461-34-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20461-34-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,6 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 20461-34:
(7*2)+(6*0)+(5*4)+(4*6)+(3*1)+(2*3)+(1*4)=71
71 % 10 = 1
So 20461-34-1 is a valid CAS Registry Number.

20461-34-1Relevant articles and documents

Stereoselective c(sp3)-c(sp2) negishi coupling of (2-amido-1-phenylpropyl)zinc compounds through the steric control of β-amido group

Tang, Shi,Li, Shuhua,Zhou, Dong,Zeng, Huiqiong,Wang, Naixing

, p. 1293 - 1300 (2013)

A controllable diastereoselective C(sp2)-C(sp3) Negishi coupling reaction of secondary benzylic zinc reagents with aryl bromides has been demonstrated for the first time, forming medicinally important 1-arylphenylethylamines. In the presence of Pd(OAc)2 and S-phos, open-chain (2-amido-1-phenylethyl)zinc reagents bearing a β-NHAc or NHCHO group underwent cross-coupling reaction to give syn 1-arylphenylethylamine as the major products, whereas the zinc reagents bearing a sterically hindered β-NHCOC(CH3)2OTBS group specifically yielded anti 1-arylphenylethylamines.

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