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323187-56-0

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323187-56-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 323187-56-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,3,1,8 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 323187-56:
(8*3)+(7*2)+(6*3)+(5*1)+(4*8)+(3*7)+(2*5)+(1*6)=130
130 % 10 = 0
So 323187-56-0 is a valid CAS Registry Number.

323187-56-0Relevant articles and documents

Au(III) complexes with tetradentate-cyclam-based ligands

Reiers?lmoen, Ann Christin,Solvi, Thomas N.,Fiksdahl, Anne

, p. 186 - 190 (2021/02/26)

Chiral cyclam (1,4,8,11-tetraazacyclotetradecane) derivatives were synthesized stepwise from chiral mono-Boc-1,2-diamines and (dialkyl)malonyl dichloride via open diamide-bis(N-Boc-amino) intermediates (65-91%). Deprotection and ring closure with a second malonyl unit afforded the cyclam tetraamide precursors (80-95%). The new protocol allowed the preparation of the target cyclam derivatives (53-59%) by a final optimized hydride reduction. Both the open tetraamine intermediates and the cyclam derivatives successfully coordinated with AuCl3 to give moderate to excellent yields (50-96%) of the corresponding novel tetra-coordinated N,N,N,N-Au(III) complexes with alternating five- and six-membered chelate rings. The testing of the catalytic ability of the cyclam-based N,N,N,N-Au(III) complexes demonstrated high catalytic activity of some complexes in selected test reactions (full conversion in 1-24 h, 62-97% product yields).

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