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97871-93-7

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97871-93-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97871-93-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,7 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 97871-93:
(7*9)+(6*7)+(5*8)+(4*7)+(3*1)+(2*9)+(1*3)=197
197 % 10 = 7
So 97871-93-7 is a valid CAS Registry Number.

97871-93-7Downstream Products

97871-93-7Relevant articles and documents

METHOD FOR SYNTHESIZING THIOAURONES

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Paragraph 0146; 0154-0157; 0159; 0180-0184, (2021/02/12)

An embodiment of the present invention is a process for producing 2 - benzoic acid compound by reacting a thiosalicylic acid with a strongly basic substance and a benzylhalide. The 2 - methoxy - N N-methyl -2 - benzamides, which are reacted with N - methoxy - N N-methylcarbamoyl chloride to produce N - methoxy-N-methylbenzamides. The N - methoxy - N N-methyl -2 - (benzocyclohexyl) benzamide is treated with arylethynyl salt to prepare 1 - (2- benzocyclohexyl) phenyl -3 - phenyl -2 - profin -1 . The 1 - (2-) phenyl -3 - phenyl -2 - profin -1 - one is treated with an acid material. Provided is a method for preparing a thiouronone compound.

Competitive cascade cyclization of 2′-tosyloxychalcones: An easy access to thioflavones and thioaurones

Venkateswarlu, Somepalli,Murty, Gandrotu Narasimha,Satyanarayana, Meka,Siddaiah, Vidavalur

supporting information, p. 2347 - 2354 (2020/07/03)

A new and efficient approach for the synthesis of thioflavones and thioaurones by competitive cascade cyclization of 2′-tosyloxychalcones has been developed. 2′-Tosyloxychalcones were smoothly converted into thioflavones and thioaurones by incorporation of sulfur atom using elemental sulfur and triethylamine in DMSO with good yields. The advantages of the methodology are the formation of both thioflavones and thioaurones in a single step. Easily accessible substrates, mild reaction conditions and compatibility with a broad range of functional groups make this protocol clean and inexpensive.

Iodine-catalyzed intramolecular oxidative thiolation of vinylic carbon-hydrogen bonds via tandem iodocyclization and dehydroiodination: Construction of 2-methylene-3-thiophenones

Zheng, Gang,Ma, Xiaoli,Liu, Bangyu,Dong, Ying,Wang, Mang

, p. 743 - 748 (2014/04/03)

A metal-free vinylic carbon-hydrogen bond thiolation has been developed. Under the catalysis of iodine (10 mol%), the cyclization of α-alkenoyl ketene dithioacetals afforded a broad range of polyfunctionalized 2-methylene-3-thiophenones in good selectivity with moderate to excellent yields via tandem iodocyclization and dehydroiodination. The synthetic strategy can also be extended to the cyclization of ortho-methylthiophenyl vinyl ketones leading to 2-methylene-3-benzothiophenones.

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