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58758-37-5

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58758-37-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 58758-37-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,8,7,5 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 58758-37:
(7*5)+(6*8)+(5*7)+(4*5)+(3*8)+(2*3)+(1*7)=175
175 % 10 = 5
So 58758-37-5 is a valid CAS Registry Number.

58758-37-5Downstream Products

58758-37-5Relevant articles and documents

Copper-catalysed intramolecular O-arylation: A simple and efficient method for benzoxazole synthesis

Wu, Fengtian,Zhang, Jie,Wei, Qianbing,Liu, Ping,Xie, Jianwei,Jiang, Haojie,Dai, Bin

, p. 9696 - 9701 (2014)

A wide range of 2-substituted benzoxazoles can be efficiently synthesized from N-(2-iodo-/bromo-phenyl)benzamides, and even the less reactive N-(2-chlorophenyl)benzamides, via Cu-catalysed intramolecular coupling cyclization reactions using methyl 2-methoxybenzoate as the ligand under mild reaction conditions. In addition, the benzoxazoles can be easily prepared from the primary amides coupling with o-dihalobenzenes in a single step. This journal is

Palladium-catalyzed direct C2-arylation of azoles with aromatic triazenes

Liu, Can,Wang, Zhiming,Wang, Lei,Li, Pinhua,Zhang, Yicheng

, p. 9209 - 9216 (2019/11/05)

A highly efficient palladium-catalyzed arylation of azoles at the C2-position using 1-aryltriazenes as aryl reagents was developed. Azoles including oxazoles, thiazoles, imidazoles, 1,3,4-oxadiazoles, and oxazolines could react with 1-aryltriazenes smoothly to generate the corresponding products in good to excellent yields, and various substitution patterns were tolerated toward the reaction.

Iron-catalyzed 2 - benzenes and wicked zuozuo apperception for the synthesis of the new method

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Paragraph 0019-0020; 0035-0036, (2018/01/11)

The invention discloses a new synthesis method of iron-catalyzed 2-aryl benzoxazoles, which is prepared by directly performing C-N coupling and C-O coupling on benzamide and o-bromoiodobenzene serving as raw materials at a certain temperature in the presence an iron salt, a ligand and an alkali. According to the invention, a biological metal iron is introduced in synthesis of medical skeletons 2-aryl benzoxazoles, thus use of high-toxicity metals like palladium is avoided, and the application range of the method is expanded to substrates containing different substituent groups. The invention also successfully develops a catalyzing system which can have a catalysis effect on C-N and C-O coupling at the same time, and can greatly improve the safety of 2-aryl benzoxazoles in the synthesis process.

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