3-Amino-4-arylazopyrazoles: CT complexation and a novel synthesis of pyrazolo[2,3-a]quinazolines

DOI: 10.1002/ardp.19923250704

Source and publish data:

Archiv der Pharmazie p. 389 - 392 (1992)

Update date:2022-08-05

Topics:

Authors:

Ibrahim Ibrahim

Hassan Hassan

Mohamed Mohamed

Mourad Mourad

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1002/ardp.19923250704

3,5-Diamino-4-arylazopyrazoles 1a-d form charge-transfer (CT) complexes with chloranil (CHL), fluoranil (TFQ) and react with 2,3-dicyano-5,6-dichlorobenzoquinone (DDQ) to yield pyrazolo[2,3-a]quinazoline derivatives 4. 5-Amino-3-phenyl-4-arylazopyrazole 2a-d form CT-complexes only with DDQ.

Full text of DOI:10.1002/ardp.19923250704

Products guided by the article

Product name:Pyrazolo[1,5-a]quinazoline-9a(9H)-carbonitrile, 6-(acetyloxy)-2,5-diamino-7,8-dichloro-3-[(4-methylphenyl)azo]-9-oxo-

Cas No:143571-55-5

R&D Labs maybe for 143571-55-5

Shanghai Send Pharmaceutical Technology Co., Ltd.

website:http://www.shsendpharma.com

Contact:021-58088081, +8613585868794

Address::Room A601, Building 1,NO. 800 Qingdai Road Pudong District Shanghai,China
Taizhou Huading Chemical Co.,Ltd(expird)

Contact:+86-576-88583898

Address:Economic&Technology development zone,Taizhou City,Zhejiang Province,China
Beijing Zhongshuo Pharmaceutical T & D Co.,Ltd

Contact:0086-10-64430626

Address:ea No 16, HEPINGLI,DONGCHENG DISTRICT,BEIJING,P.R.CHINA.
Shenzhen Sungening Medicine Co., Ltd

Contact:+86-871-65110906

Address:Room702, Building 2, 365 Dianchi Road, Kunming, Yunnan Province, P.R. China

Relevant to this article

Synthesis and biological activities of the 3,5-disubstituted indolizidine poison frog alkaloid 239Q and its congeners

Doi:10.1002/ejoc.201200974
(2012)
Copper-mediated difluoromethylation of (hetero)aryl iodides and β-styryl halides with tributyl(difluoromethyl)stannane

Doi:10.1002/anie.201205850
()
Chemistry of N-Nitroso Compounds. 7. Conformational Preferences of Hexahydro-N¹,N⁴-dinitroso-r-2,c-7-diphenyl-1H-1,4-diazepines: Use of Modified 1D HOHAHA and NOE Techniques

Doi:10.1021/jo00128a018
(1995)
Aminobenzannulation via metathesis of isonitriles using chromium carbene complexes

Doi:10.1021/ja00048a068
(1992)
Preparation of Piperidinylpyridines via Selective Reduction of Bipyridines with Nickel-Aluminum Alloy

Doi:10.1021/jo00049a046
(1992)
Reductive Amination/Cyclization of Keto Acids Using a Hydrosilane for Selective Production of Lactams versus Cyclic Amines by Switching of the Indium Catalyst

Doi:10.1002/anie.201509465
(2016)

Article Doi