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Furan derivatives CXCVI. Synthesis and reactions of 3,4-dichlorophenyl-substituted furocondensed derivatives

A. Krutošíková, J. Kováč, and P. Banák

Department of Organic Chemistry, Slovak Technical University, CS-812 37 Bratislava

 

Abstract: The preparation of new 9-(3,4-dichlorophenyl)-furo[2',3':4,5]pyrrolo[l,2-d]-l,2,4-triazolo[3'',4"-f]-1,2,4-triazines is described. Reaction of 2-(3,4-dichlorophenyl)-4H-furo[3,2-b]pyrrole-2-carboxhydrazide with triethyl orthoformate or orthoacetate afforded 1,2-dihydro-7-(3,4-dichlorophenyI)-furo[2',3' :4,5]pyrrolo[1,2-d]-1,2,4-triazine-l-one or its 4-methyl analogue giving with phosphorus pentasulfide thiones, reacting with hydrazine to the corresponding hydrazino derivatives. The last ones with triethyl orthoformate or orthoacetate underwent cyclization reactions.

Full paper in Portable Document Format: 385a707.pdf

 

Chemical Papers 38 (5) 707–713 (1984)

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