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883972-65-4

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883972-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 883972-65-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,3,9,7 and 2 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 883972-65:
(8*8)+(7*8)+(6*3)+(5*9)+(4*7)+(3*2)+(2*6)+(1*5)=234
234 % 10 = 4
So 883972-65-4 is a valid CAS Registry Number.

883972-65-4Relevant articles and documents

Flexible Construction of Functionalized-Pyrroles under Palladium or Copper Catalysis in the Presence of BF3 ? Et2O

Guo, Wusheng,Liu, Teng,Liu, Yin,Wei, Kun,Yan, Biwei

supporting information, (2022/01/26)

We have developed a flexible approach enabling the access to highly functionalized pyrroles under palladium or copper catalysis in the presence of BF3 ? Et2O. This catalytic methodology utilizes commercially available amines as react

Gold(I)-catalyzed decarboxylation of propargyl carbonates: Reactivity reversal of the gold catalyst from π-Lewis acidity to σ-Lewis acidity

Shen, Ruwei,Yang, Jianjun,Zhu, Shugao,Chen, Chao,Wu, Luling

, p. 1259 - 1269 (2015/04/22)

A cationic gold(I)-catalyzed decarboxylative etherification of propargyl carbonates to selectively produce propargyl ethers is reported. In the reaction the gold(I) catalyst shows a distinct σ-Lewis acidity rather than the commonly observed π-Lewis acidity, and thus catalyzes the decarboxylation of a variety of propargyl carbonates to give the corresponding propargyl ethers with high selectivity. This reaction represents a rare example of the tunable reactivity of cationic gold(I) complexes between σ-Lewis acidity and π-Lewis acidity.

TMSCl-mediated synthesis of α,β-unsaturated amides via C-C bond cleavage and C-N bond formation of propargyl alcohols with trimethylsilyl azide

Song, Xian-Rong,Song, Bo,Qiu, Yi-Feng,Han, Ya-Ping,Qiu, Zi-Hang,Hao, Xin-Hua,Liu, Xue-Yuan,Liang, Yong-Min

, p. 7616 - 7625 (2014/09/16)

A new method with high efficiency for the synthesis of α,β- unsaturated amides from the easily prepared propargyl alcohols and TMSN 3 using TMSCl as an acid promoter is developed. A wide variety of α,β-unsaturated amides were produced in moderate to excellent yields. Mechanistic studies indicate that this transformation involves TMSCl-mediated allenylazide intermediate formation, C-C bond cleavage, and C-N bond formation. Significantly, this reaction shows good functional group compatibility and high regioselectivity, with a relatively short reaction time and inexpensive reagents.

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