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67447-60-3

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67447-60-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67447-60-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,4,4 and 7 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 67447-60:
(7*6)+(6*7)+(5*4)+(4*4)+(3*7)+(2*6)+(1*0)=153
153 % 10 = 3
So 67447-60-3 is a valid CAS Registry Number.

67447-60-3Downstream Products

67447-60-3Relevant articles and documents

Enantioselective α-Chlorination Reactions of in Situ Generated C1 Ammonium Enolates under Base-Free Conditions

Stockhammer, Lotte,Weinzierl, David,B?gl, Thomas,Waser, Mario

, p. 6143 - 6147 (2021/08/18)

The asymmetric α-chlorination of activated aryl acetic acid esters can be carried out with high levels of enantioselectivities utilizing commercially available isothiourea catalysts under base-free conditions. The reaction, which proceeds via the in situ formation of chiral C1 ammonium enolates, is best carried out under cryogenic conditions combined with a direct trapping of the activated α-chlorinated ester derivative to prevent epimerization, thus allowing for enantioselectivities of up to e.r. 99:1.

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