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16358-71-7

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16358-71-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16358-71-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,3,5 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16358-71:
(7*1)+(6*6)+(5*3)+(4*5)+(3*8)+(2*7)+(1*1)=117
117 % 10 = 7
So 16358-71-7 is a valid CAS Registry Number.

16358-71-7Relevant articles and documents

Large-steric hindrance chiral quaternary ammonium salt phase transfer catalyst derived from cinchona alkaloid and synthesis method thereof

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Paragraph 0054-0058, (2021/10/27)

The invention discloses a large-steric hindrance chiral quaternary ammonium salt phase transfer catalyst derived from cinchona alkaloid. The invention belongs to the technical field of asymmetric catalysis. In the invention, the cinchona alkaloid is disso

Catalytic Asymmetric Hydroalkenylation of Vinylarenes: Electronic Effects of Substrates and Chiral N-Heterocyclic Carbene Ligands

Ho, Chun-Yu,Chan, Chun-Wa,He, Lisi

, p. 4512 - 4516 (2015/04/14)

An asymmetric tail-to-tail cross-hydroalkenylation of vinylarenes with terminal olefins was achieved by catalysis with NiH complexes bearing chiral N-heterocyclic carbenes (NHCs). The reaction provides branched gem-disubstituted olefins with high enantioselectivity (up to 94% ee) and chemoselectivity (cross/homo product ratio: up to 99:1). Electronic effects of the substituents on the vinylarenes and on the N-aryl groups of the NHC ligands, but not a π,π-stacking mechanism, assist the steric effect and influence the outcome of the cross-hydroalkenylation.

Enantioselective copper-catalyzed 1,4-addition of dialkylzincs to enones followed by trapping with allyl iodide derivatives

Kawamura, Kenjiro,Fukuzawa, Hitomi,Hayashi, Masahiko

supporting information; experimental part, p. 640 - 647 (2011/08/06)

Enantioselective copper-catalyzed 1,4-addition of dialkylzincs to enones proceeded in the presence of 0.1 mol% of Cu(OTf)2 and 0.25 mol% of an N,N,P-ligand containing a quinoline moiety to afford the corresponding conjugated adducts in 99%ee. The intermediate zinc enolates were trapped with substituted allyl iodides to give disubstituted ketones with high diastereoselectivity and enantioselectivity.

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