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345949-81-7

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345949-81-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 345949-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,5,9,4 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 345949-81:
(8*3)+(7*4)+(6*5)+(5*9)+(4*4)+(3*9)+(2*8)+(1*1)=187
187 % 10 = 7
So 345949-81-7 is a valid CAS Registry Number.

345949-81-7Downstream Products

345949-81-7Relevant articles and documents

Applications of planar-chiral heterocycles in enantioselective catalysis: Cu(I)/bisazaferrocene-catalyzed asymmetric ring expansion of oxetanes to tetrahydrofurans

Lo, Michael M.-C.,Fu, Gregory C.

, p. 2621 - 2634 (2007/10/03)

A planar-chiral, C2-symmetric bisazaferrocene ligand is shown to control the stereochemistry of Cu(I)-catalyzed ring expansions of oxetanes to tetrahydrofurans.

Asymmetric Carbene C-O Insertion Using Optically Active Bipyridine-Copper Complex as a Catalyst. Ring Expansion of Oxetanes to Tetrahydrofurans

Ito, Katsuji,Katsuki, Tsutomu

, p. 1857 - 1860 (2007/10/02)

Copper complex of (7R,7R')-di(1-t-butyldimethylsiloxy-1-methylethyl)-6,6',7,7'-tetrahydro-5H,5'H-2,2'-bi-1,1'-pyridine (3) was found to be an effective catalyst for asymmetric carbene insertion reaction into the C-O bond of oxetanes.For example, the react

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