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66702-71-4

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66702-71-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66702-71-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,7,0 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66702-71:
(7*6)+(6*6)+(5*7)+(4*0)+(3*2)+(2*7)+(1*1)=134
134 % 10 = 4
So 66702-71-4 is a valid CAS Registry Number.

66702-71-4Downstream Products

66702-71-4Relevant articles and documents

Potassium Base-Catalyzed Michael Additions of Allylic Alcohols to α,β-Unsaturated Amides: Scope and Mechanistic Insights

Kurouchi, Hiroaki,Sai, Masahiro

, p. 3585 - 3591 (2021/06/27)

We report herein the first KHMDS-catalyzed Michael additions of allylic alcohols to α,β-unsaturated amides through allylic isomerization. The reaction proceeds smoothly in the presence of only 5 mol% of KHMDS to afford a variety of 1,5-ketoamides in high yields. Mechanistic investigations, including experimental and computational studies, reveal that the KHMDS-catalyzed in-situ generation of the enolate from the allylic alcohol through a tunneling-assisted 1,2-hydride shift is the key to the success of this transformation. (Figure presented.).

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