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857775-99-6

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857775-99-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 857775-99-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,7,7 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 857775-99:
(8*8)+(7*5)+(6*7)+(5*7)+(4*7)+(3*5)+(2*9)+(1*9)=246
246 % 10 = 6
So 857775-99-6 is a valid CAS Registry Number.

857775-99-6Relevant articles and documents

Mild and efficient synthesis of indoles and isoquinolones via a nickel-catalyzed Larock-type heteroannulation reaction

Weng, Wei-Zhi,Xie, Jian,Zhang, Bo

supporting information, p. 3983 - 3988 (2018/06/08)

A simple and efficient approach for the preparation of substituted indoles and isoquinolones via a nickel-catalyzed Larock-type heteroannulation reaction is reported. This transformation employed air-stable and inexpensive Ni(dppp)Cl2 as a precatalyst and Et3N as a mild base. Moreover, the reaction occurs efficiently under mild conditions, and a wide range of substituted indoles and isoquinolones bearing various functional groups are obtained in moderate to excellent yields.

Synthesis of indoles and polycyclic amides via ruthenium(ii)-catalyzed C-H activation and annulation

Lin, Hui,Li, Shuai-Shuai,Dong, Lin

supporting information, p. 11228 - 11234 (2015/11/27)

Ruthenium(ii)-catalyzed oxidative coupling of NH protic amides with alkynes has been developed for the synthesis of a diversity of complex structures, such as N-acyl indole and tricyclic amide derivatives.

Synthesis of indoles via palladium-catalyzed C-H activation of N-aryl amides followed by coupling with alkynes

Zhou, Feng,Han, Xiuling,Lu, Xiyan

, p. 4681 - 4685 (2011/09/30)

A convenient and efficient method for the construction of indole skeleton was developed via Pd-catalyzed C-H activation of N-aryl amides and subsequent coupling with alkynes. Both stoichiometric and catalytic versions have been successfully achieved.

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