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677005-72-0

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677005-72-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 677005-72-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,7,0,0 and 5 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 677005-72:
(8*6)+(7*7)+(6*7)+(5*0)+(4*0)+(3*5)+(2*7)+(1*2)=170
170 % 10 = 0
So 677005-72-0 is a valid CAS Registry Number.

677005-72-0Downstream Products

677005-72-0Relevant articles and documents

CpRu/Br?nsted Acid-Catalyzed Enantioselective Dehydrative Cyclization of Pyrroles N-Tethered with Allylic Alcohols

Iwase, Shoutaro,Kitamura, Masato,Suzuki, Yusuke,Tanaka, Shinji

, (2020/03/04)

A cationic CpRu/halogen/Br?nsted acid hybrid catalyst (R ?cat) with the axially chiral Cl-Naph-PyCOOH ligand (naph = naphthyl, py = pyridine) is highly efficient for dehydrative cyclization of pyrroles to construct 1,2-fused-2-allylated pyrroles that, so far, have not been achieved. The mechanistic study has implied that hydrogen and halogen bonds play a key role for facilitating the R,SRu-catalyzed reaction pathway via a σ-allyl intermediate and that the diastereomeric R,RRu ?cat slowly gives the minor enantiomer via a π-allyl intermediate.

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