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2-phenyl-4-(4-nitrophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzo[b]pyran is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

130716-49-3

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130716-49-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130716-49-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,7,1 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 130716-49:
(8*1)+(7*3)+(6*0)+(5*7)+(4*1)+(3*6)+(2*4)+(1*9)=103
103 % 10 = 3
So 130716-49-3 is a valid CAS Registry Number.

130716-49-3Relevant academic research and scientific papers

Alkaline earth metal catalyzed cascade, one-pot, solvent-free, and scalable synthesis of pyranocoumarins and benzo[b]pyrans

Yaragorla, Srinivasarao,Saini, Pyare Lal,Singh, Garima

supporting information, p. 1649 - 1653 (2015/03/14)

Ca(OTf)2 catalyzed, cascade, one-pot, conjugate addition and annulation of various nucleophiles to the α,β-unsaturated carbonyl compounds for the synthesis of biologically potent pyranocoumarins and benzo[b]pyrans has been illustrated. This one

Preparation of 5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran derivatives in ionic liquids

Li, Qiang,Hu, Xueyuan,Li, Wei,Yang, Fei,Yang, Xiaoian,Sun, Lili,Zhou, Liping,Qi, Junsheng,Yu, Yu

experimental part, p. 331 - 333 (2009/06/18)

A novel preparation of 5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran derivatives promoted by lnCI3·4H2O/TMSCI in ionic liquid ([bmin]BF4) is described. The preparative procedure presented in this paper is operationally simple and environmentally friendly. The reaction media and catalyst used can be recovered and reused for at least four times without loss in the catalytic activity. This method is promising for a mass-production process.

CHARACTERISTICS OF HETEROCYCLIZATION OF TRIKETONES OF THE 2-(3-OXOPROPYL)CYCLOHEXANE-1,3-DIONE SERIES WITH HYDROXYLAMINE HYDROCHLORIDE

Markova, L. I.,Kazarinova, T. D.,Yudovich, L. M.,Karchenko, V. G.

, p. 178 - 183 (2007/10/02)

A rearrangement that leads to the formation of mixtures of 2,4- and 2,3-diarylsubstituted 5-oxotetrahydroquinoline oximes was observed in the heterocyclization of oxo 1,5-diketones of the 2-(3-oxopropyl)cyclohexane-1,3-dione series, as well as in the recy

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