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27695-70-1

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27695-70-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27695-70-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,6,9 and 5 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 27695-70:
(7*2)+(6*7)+(5*6)+(4*9)+(3*5)+(2*7)+(1*0)=151
151 % 10 = 1
So 27695-70-1 is a valid CAS Registry Number.

27695-70-1Relevant articles and documents

Catalytic, enantioselective N-acylation of lactams and thiolactams using amidine-based catalysts

Yang, Xing,Bumbu, Valentina D.,Liu, Peng,Li, Ximin,Jiang, Hui,Uffman, Eric W.,Guo, Lei,Zhang, Wei,Jiang, Xuntian,Houk,Birman, Vladimir B.

supporting information, p. 17605 - 17612 (2013/01/15)

In contrast to alcohols and amines, racemic lactams and thiolactams cannot be resolved directly via enzymatic acylation or classical resolution. Asymmetric N-acylation promoted by amidine-based catalysts, particularly Cl-PIQ 2 and BTM 3, provides a convenient method for the kinetic resolution of these valuable compounds and often achieves excellent levels of enantioselectivity in this process. Density functional theory calculations indicate that the reaction occurs via N-acylation of the lactim tautomer and that cation-π interactions play a key role in the chiral recognition of lactam substrates.

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