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2-(p-toluenesulfonyl)-2,4-dihydro(1)benzopyrano(4,3-c)pyrazole is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

122835-22-7

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122835-22-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 122835-22-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,2,8,3 and 5 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 122835-22:
(8*1)+(7*2)+(6*2)+(5*8)+(4*3)+(3*5)+(2*2)+(1*2)=107
107 % 10 = 7
So 122835-22-7 is a valid CAS Registry Number.

122835-22-7Downstream Products

122835-22-7Relevant academic research and scientific papers

Zinc-promoted cyclization of tosylhydrazones and 2-(dimethylamino)malononitrile: An efficient strategy for the synthesis of substituted 1-tosyl-1: H -pyrazoles

Zhang, Bang-Hong,Lei, Lin-Sheng,Liu, Si-Zhan,Mou, Xue-Qing,Liu, Wei-Ting,Wang, Shao-Hua,Wang, Jie,Bao, Wen,Zhang, Kun

, p. 8545 - 8548 (2017/08/04)

A Zn(OTf)2-promoted cyclization reaction of tosylhydrazones with 2-(dimethylamino)malononitrile has been successfully developed providing an efficient strategy for the synthesis of substituted 1-tosyl-1H-pyrazoles.

(1)BENZOPYRANO(4,3-c)PYRAZOLES BY INTRAMOLECULAR NITRILE IMINE ADDITION TO ACETYLENES

Janietz, Dietmar,Rudorf, Wolf-Dieter

, p. 1661 - 1666 (2007/10/02)

2-Alkynyloxy-benzaldehydes 1 are obtained by alkylation of the corresponding salicylaldehydes either with p-toluenesulfonic acid propargylester or 1-acetoxy-4-chloro-but-2-yne.The aldehydes 1 are converted into the hydrazones 2 by reaction with p-toluenes

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