Thin-layer chromatography of some new angular heterocyclics

Agarwal, Nandlal; Mital, R. L.

doi:10.1016/s0021-9673(00)89047-0

Cited by 5 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In con tin u a tion of our study for the syn the sis of heterocyclic ni tro gen dervatives, [1][2][3][4][5][6] we were in ter ested in the re action of arylnaphthoquinones with thioglycolic acid and primary ar o matic amines giv ing two types of the con den sa tion prod ucts. 6 The quin oxa line, 4,7-14 phenazine, [15][16][17][18] phenoxazine 15,19 and phe no thi azine, 20,21 ring sys tems have been ex ten sively stud ied and many such com pounds have now be come commer cially avail able and are widely used in med i cal practice 22,23 and in the dye in dus try. 24 This led us to syn the size some new re lated com pounds.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Arylnaphthoquinones and Their Reactions with o‐Substituted Primary Aromatic Amines

Fandy

Abbas

Al-Hussaini

et al. 2001

J Chinese Chemical Soc

View full text Add to dashboard Cite

Cycloaddition reaction of 2‐aryl‐1,4‐benzoquinones 1a‐d with a number of different dienes, namely 2,3‐dimethylbutadiene; 1,4‐diphenylbutadiene and anthracene yield 2‐aryl‐6,7‐dimethyl‐1,4‐ naphthoquinones 3a,b; 2,5,8‐triphenyl‐1,4‐naphthoquinone 4 and 2‐aryl‐1,4,9,10‐tetrahydro‐9,10‐o‐benzoanthracene‐1,4‐dione 5, respectively were investigated. In addition, the cycloaddition reaction of 2‐aryl‐1,4‐benzoquinones 1d,e with 2,3‐dimethylbutadiene was also investigated to yield 2‐aryl‐5,8‐dihydro‐6,7‐dimethyl‐1,4‐naphthohydroquinones 2a,b. Cyclocondensation reactions of Diels‐Alder adducts 2b, 3b, 5a with ethylenediamine, o‐substituted primary aromatic amines gave quinoxaline, phenazine, phenoxazine and phenothiazine ocyclic derivatives 6–14.

show abstract