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32730-13-5

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32730-13-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 32730-13-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,7,3 and 0 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 32730-13:
(7*3)+(6*2)+(5*7)+(4*3)+(3*0)+(2*1)+(1*3)=85
85 % 10 = 5
So 32730-13-5 is a valid CAS Registry Number.

32730-13-5Relevant articles and documents

TfOH-SiO2 as an efficient and recyclable catalyst for synthesis of 3-arylbenzofurans

Wang, Baolong,Hu, Jiaxing,Zhang, Fanglin,Zheng, Hua

, p. 103 - 113 (2016)

A convenient process for the synthesis of 3-arylbenzofurans and their derivatives by 2-phenoxy-1-phenylethanones via TfOH-SiO2 catalyzed is developed. This method provides several advantages such as simple work-up procedure, simple post-treatme

Titanium tetrachloride promoted cyclodehydration of aryloxyketones: Facile synthesis of benzofurans and naphthofurans with high regioselectivity

Zhang, Qiu,Luo, Juan,Wang, Bingqiao,Xiao, Xiaoqin,Gan, Zongjie,Tang, Qiang

supporting information, p. 1337 - 1340 (2019/04/16)

An efficient and facile method for the synthesis of a broad series of benzofurans and naphthofurans is described. The direct intramolecular cyclodehydration of aryloxyketones in the presence of titanium tetrachloride affords the corresponding benzofurans and naphthofurans with good regioselectivity and yields.

Novel one-pot synthesis of 3-Phenylnaphtho[2,3-b]furan and 3-phenylbenzofurans under microwave irradiation and solvent-free conditions

Wang, Zhongxing,Gu, Jinzhong,Jing, Huanwang,Liang, Yongmin

experimental part, p. 4079 - 4087 (2009/12/24)

A one-pot synthesis of functionalized benzofurans has been developed via O-alkylation, carbon-carbon coupling/cyclization, and dehydration/olefination tandem reactions from phenacyl bromide and phenols under microwave irradiation and solvent-free conditio

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