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4-{4-nitrophenyl}-6-methyl-2-phenylquinazoline is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128256-23-5

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128256-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128256-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,5 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128256-23:
(8*1)+(7*2)+(6*8)+(5*2)+(4*5)+(3*6)+(2*2)+(1*3)=125
125 % 10 = 5
So 128256-23-5 is a valid CAS Registry Number.

128256-23-5Downstream Products

128256-23-5Relevant academic research and scientific papers

Microwave Assisted Aza-Wittig Reactions of N-Imidoyliminophosphorane with Aldehydes: A Convenient and Selective Route to Quinazolines

Kumar, Vipan,Sharma, Ashwini,Mahajan, Mohinder P.

, p. 49 - 53 (2004)

A novel synthetic strategy for the selective synthesis of biologically important quinazolines with shorter reaction times, better yields, lower energy inputs and hassle free work up using a domestic microwave oven is reported.

A catalyst- and solvent-free selective approach to biologically important quinazolines and benzo[g]quinazoline

Kumar, Vipan,Mohan, Chander,Gupta, Manish,Mahajan, Mohinder P.

, p. 3533 - 3538 (2005)

A solvent-free and catalyst-free approach towards the selective synthesis of quinazolines and benzo[g] quinazolines has been developed using conventional microwave oven with excellent yields and reproducibilty.

A convenient synthesis of Quinazoline ring by tandem aza-Wittig reaction/electrocyclic ring closure

Rossi,Calabrese,Farma

, p. 5819 - 5834 (2007/10/02)

3,4-D-Dihydroquinazolines and Quinazolines were prepared starting from N'-aryl-N-(triphenylphosphoranilidene)-carboximidamides and aliphatic or aromatic aldehydes. The mechanism of the reaction is discussed.

Quinazolines by electrocyclic ring closure of 1,3-diaza-1,3-dienes

Rossi, Elisabetta,Celentano, Giuseppe,Stradi, Riccardo,Strada, Alberto

, p. 903 - 906 (2007/10/02)

N-imidoyliminotripheny]phosphorane reacts with aliphatic and aromatic aldehydes to give via an 1,3-diaza-1,3-diene intermediate 3,4-dihydro quinazolines and quinazolines. The ratio between the reaction products depends from the aldehyde employed.

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