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27693-39-6

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27693-39-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27693-39-6 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 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 27693-39:
(7*2)+(6*7)+(5*6)+(4*9)+(3*3)+(2*3)+(1*9)=146
146 % 10 = 6
So 27693-39-6 is a valid CAS Registry Number.

27693-39-6Relevant articles and documents

Metal-free oxidative: Para -acylation of unprotected anilines with N-heteroarylmethanes

Liu, Min,Chen, Xue,Chen, Tieqiao,Xu, Qing,Yin, Shuang-Feng

, p. 9845 - 9854 (2017)

A selective oxidative para-acylation of unprotected anilines with methyl groups in N-heteroarylmethanes was achieved. This transformation proceeds under mild metal-free reaction conditions to produce the corresponding valuable diarylmethanones in good to high yields, featuring high site-selectivity, high functional-group-tolerance, gram-scale synthesis and easy product-derivation. Preliminary mechanistic studies revealed that the present oxidative para-acylation would take place via a Friedel-Crafts-type process of in situ imines and the steric hindrance might be the key issue for the high regio-selectivity.

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