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1213786-20-9

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1213786-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1213786-20-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,3,7,8 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1213786-20:
(9*1)+(8*2)+(7*1)+(6*3)+(5*7)+(4*8)+(3*6)+(2*2)+(1*0)=139
139 % 10 = 9
So 1213786-20-9 is a valid CAS Registry Number.

1213786-20-9Relevant articles and documents

Palladium-Catalyzed Cascade Arene/Alkyne Annulation: Synthesis of Fluorene-Benzoxazine Derivatives

Cai, Zhong-Jian,Li, Fang-Hui,Wang, Shun-Yi,Ji, Shun-Jun

, p. 4810 - 4813 (2016)

A palladium-catalyzed cascade arene/alkyne annulation reaction for the synthesis of fluorene-benzoxazine derivatives is developed. This transformation involves a 6-exo-dig cyclization, a 1,3-oxazine vinylpalladium intermediate, and a C-H bond activation.

Copper-Catalyzed Enantioselective C-H Arylation between 2-Arylindoles and Hypervalent Iodine Reagents

Liang, Hao,Zhu, Guoxun,Pu, Xiaoyun,Qiu, Liqin

supporting information, p. 9246 - 9250 (2021/12/06)

The copper-catalyzed enantioselective C-H arylation between 2-arylindoles and hypervalent iodine reagents has been successfully developed, which provides a convenient and economical route to the highly atroposelective synthesis of axially chiral indole de

Copper-catalyzed (4+1) and (3+2) cyclizations of iodonium ylides with alkynes

Liang, Hao,He, Xiaobo,Zhang, Yaqi,Chen, Bin,Ouyang, Jia-Sheng,Li, Yongsu,Pan, Bendu,Subba Reddy, Chitreddy V.,Chan, Wesley Ting Kwok,Qiu, Liqin

, p. 11429 - 11432 (2020/10/12)

The copper(ii)-catalyzed (4+1) cyclizations and copper(i)-catalyzed (3+2) cycloadditions of iodonium ylides and alkynes were successfully developed by employing efficient and safe iodonium ylides instead of traditional diazo compounds. Highly functionaliz

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